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Copyright of Acta Agronomica Sinica is the property of Crop Science Society of China and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of New Media Research is the property of New Media Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

: [Objective] The present paper aimed to study the effects of soil reconstruction and improvement on soil bacterial community structure of debris flow waste-shoal land, providing a scientific basis for the utilization of debris flow waste-shoal land. [ Method] The soil of debris flow waste-shoal land was improved by replacing with out-soil and silting with flood, and then planted com on it. Based on 16S sequencing of soil bacteria, we analyzed the bacterial community diversity. To study the structural characteristics of soil bacterial community, we used the random forest model to predict the key OTU s. [ Result] ( i) The soil bacteria in the debris flow waste-shoal land were mainly involved by Proteobacteria, Actinobacteria, Bacteroidetes and Acitobacterium. The total relative abundance of the four bacterial species was 75%, a mong which Proteobacteria was the most abundant and the relative abundance was more than 40%. (ii) Com planting after silting with flood ( SY) and com planting after replacing with out-soil and silting with flood ( TY) had significant impact on the soil bacterial community structure of debris flow waste-shoal land. The bacteria of soil OTU abundance decreased by the order of magnitude, and the number of unique OTU s was lower than that of unmodified soil ( SS). ( iii) Compared with SS, SY increased the number of soil bacterial species, and changed the abundance of key species of soil bacteria, and reduced species diversity and uniformity. TY could significantly reduce the number of soil bacterial species, and reconfigured the soil community structure. ( iv) SY had the largest proportion of independent explanations for the total variance ( 34. 38 % ), and the direct effect of silting with flood on soil bacterial community structure was significant. ( v) The structure of soil bacterial community was closely related to 2. 68% of the OTUs. According to the importance, the top 6 OTUs belonged to Proteobacteria ( two different families), Ateobacteria, Verrucomicrobia, Planctomycetes and Candidatus_Saccharibacteria [ Conclusion] The direct effect of silting with flood on soil bacterial community structure in debris flow waste-shoal land is significant. After replacing with out-soil, silting with flood and the planting com is conducive to reconfiguring soil bacterial community structure and maintaining the stability of soil community structure. [ABSTRACT FROM AUTHOR]

Copyright of Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bulletin of Soil & Water Conservation is the property of Bulletin of Soil & Water Conservation Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[Objective] The transfer and accumulation characteristics of heavy metal cadmium in soil mulberry system after reclamation in abandoned lead-zinc mining area were revealed. [Method] The mulberry orchard used as the research object in the 14 years of recultivation in the mining area was determined by measuring the leaves, branch bark, branch wood, stem bark, stem wood thick root bark, thick root wood and all fine roots of mulberry trees and total cadmium and available cadmium in soil in mulberry garden. [Result] (i) The distribution ratio of the cadmium accumulation of the whole mulberry plant on the roots, branches and leaves was about 12: 5: 3. (ii) Differences in cadmium content in various tissues and organs of mulberry trees were shown as follows : fine roots > branch bark > stem bark > rough root bark > leaf > rough root wood > stem wood > branch wood. There was significant difference in cadmium concentration between fine roots and stem wood of mulberry, but there was no significant difference among other tissues and organs. The cadmium contents were 0. 21, 0. 13, 0. 11, 0. 10, 0. 09, 0. 04, 0. 03 and 0. 01 mg/kg. (iii) The cadmium enrichment ability of various tissues and organs of mulberry tree was as follows: fine root > branch bark > stem bark > leaf > rough root bark > rough root wood > stem wood > branch wood. The coefficients were 1. 04, 0. 87, 0. 70, 0. 5 6, 0. 53, 0. 23, 0. 16 and 0. 08. (iv) The ability of cadmium to be transported from fine roots to various organs was asfollows: shoot bark section > stem bark section > leaf > stem wood section > branch wood section, and the transfer coefficients were 0. 62, 0. 54, 0. 41, 0.13 and 0. 07. ( v) Low soil available cadmium content was beneficial to the enrichment and transport of cadmium by mulberry trees. [Conclusion] Fine roots are the main part for mulberry to absorb and accumulate cadmium, and the skin is the main way for cadmium migration in mulberry. [ABSTRACT FROM AUTHOR]

[Objective] The present paper aimed to reveal the effects of soil heavy metal pollution on the safety of diversified utilization of mulberry and the possible health risks caused by ingestion of mulberry products in abandoned lead-zinc mining area [Method]Taking the mulberry garden which had been ploughed for 14 years in the abandoned small lead-zinc mining area as the research object, the pollution status of heavy metals in mulberry products was analyzed by single factor pollution index and Nemero comprehensive pollution index. The target hazard coefficient was used to evaluate the effect of heavy metals in mulberry products on possible human health. [Result] (i) Under different limit standards, the single factor pollution index of cadmium and lead in mulberry trees planted in the study area was less than 1. 00 as the utilization mode of mulberry leaf and mulberry leaf tea, except for severe pollution [Pi(lead) = 5. 29] of fresh leaf mulberry leaf, which belonged to the clean level. (ii) The comprehensive pollution index of cadmium and lead was severe pollution (P = 4. 33). As the utilization mode of traditional Chinese medicine mulberry leaf and mulberry leaf tea, the single factor pollution index was less than 1. 00, which be longed to the clean level. (iii) The comprehensive pollution index of branch bark, branch stem and root bark as products developed by traditional Chinese medicine was 0. 09 - 0. 36, which all belonged to the clean level. (iv) Although the hazard coefficients of single cadmium target of mulberry leaves, mulberry branches and mulberry roots were all less than 1. 00, the hazard coefficients of single lead target and lead-cadmium com- pound heavy metal pollution target were more than 1. 00. Mulberry leaves polluted by lead and cadmium combined with heavy metals for a long time would have a negative impact on human health, and the health risk of children was higher than that of adults, but there was no chronic toxic effect [Conclusion] In the study area, the lead of mulberry planted in lead-zinc mining area can not be used in the development of mulberry leaf vegetables, but can be used in the product development of traditional Chinese medicine and mulbeny leaf tea [ABSTRACT FROM AUTHOR]

Copyright of Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[Objective】 Mulberry ring rot disease is one of the major fungal diseases affecting sericulture production in Asia. Studying the fun¬gal community structure in and around different areas of mulberry ring rot disease can help to reveal the pathogenic mechanism of mulberry ring rot disease and provide theoretical and data basis for the prevention and control of mulberry ring rot disease.【Method(The community structure of fungi in the core area (H zone )，the edge area (L zone) and the non-pathogenic area (Nzone) around the lesion of mulberry ring rot was studied by high-throughput sequencing.【Result】 The results showed that there were significant differences in fungal community structure among H，L and N regions. At species level，the relative abundance of Pnatophragmium triuniae in H，L and N regions ranked the highest，96.25 '，96.95 ' and 31.29 ' respectively. In addition，the relative abundance of Myrothecium roridum in H region was 1.04 '，which was 2. 17 times higher than that in L region.【Conclusion 】The above results indicate that the formation process of mulberry ring rot disease is complex，and the appearance，enlargement and perforation of the lesions involve the interaction of various fungi [ABSTRACT FROM AUTHOR]

【Objective】 The present paper aimed to study how the project named ‘Sericulture Moving from East to West’ affect the supply-side structural reform of the sericulture industry. 【Method】the changes of mulberry fields in different provinces 10 years before and after the implementation of the policy(from 1996 to 2016) were analyzed. Also, combined with natural, social, economic data from 1999 to 2016, this paper explored spatial structure characteristics and driven forces of mulberry area changes using spatial analysis and mathematical statistics. 【Result】(i) The area of mulberry fields in the eastern China decreased linearly, 16482.81 ha every year, with-4.94 % since dynamic degree, since 2006 the year implementing moving sericulture production area from the east to west policy, while the area of mulberry fields increased linearly, with 7924.69 ha every year and 1.96 % dynamic degree in ten years;(ii) The spatial model revealed that from 1996 to 2016, the center of mulberry field transferred from north to south, with a clear trend of diverting to the southwestern part of China;(iii) Principal component analysis and stepwise regression analysis demonstrated that natural, population and economy, as three major driving forces had significant impact on the area change of mulberry fields. Here, natural factor was the annual rainfall. Population factor included the number of people aged from 15 to 64, and the number of people old than 65. Economic factor was the value of secondary industry. 【Conclusion】Under the combined driving of policy guidance, natural conditions, population structure and economic development, the spatial and temporal pattern of mulberry plantation area in China has changed significantly. [ABSTRACT FROM AUTHOR]

[Objective] The study focused on the evaluation of heavy metal pollution in soil in Jianyang. The concentration and distribution of Pb, Cd, Cr, Cu, Hg and As in this area were analyzed to properly evaluate the soil quality in this area. [Method] On the basis of the topographic maps, 706 sample sites were selected in the area. As and Hg were detected by AFS. Cr, Cu, Pb and Cd were detected by ICP-MS. Through GB15618-2018 standaid, the data were analyzed by ArcGIS and comprehensive pollution index method. [Result] The results indicated that the clean area was 2160.98 km2 accounting for 99. 214% of the total area; the still clean area was 16. 41 km2 accounting for0.75% of the total area; the lightly contaminated area was 0.70 km2 accounting for 0.03% of the total area, the moderate area was vevy small. [Conclusion] Overall, no severe pollution of the metals is found in Jianyang soils. The soil cleanliness is high in this study area. [ABSTRACT FROM AUTHOR]

Copyright of Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

【Objective】This paper aimed to reveal the utilization of soil microbial communities to nutrient material from silkworm excrement without the interference of exogenous microorganisms and explore the ecological efficiency of its harmless returning to the field. 【Method】The behaviours of adding moist-heat sterilization silkworm excrement was used to simulate sterile silkworm returning, the high-throughput sequencing was used to determine the community structure and diversity of soil microbial, and the collaborative response of soil microbes to silkworm would be revealed. 【Result】The adding moist-heat sterilization silkworm excrement had no significant effect on bacterial structure of soil( P> 0. 05), however, the species number of soil bacteria was reduced, and Chao I index, the Simpson diversity index and the Shannon diversity index were significantly reduced( P < 0. 05). Compared with the control, the relative abundance of the cellulolytic bacteria of firmicutes, proteobacteria and actinomycetes was increased significantly under the condition of moist-heat sterilization silkworm excrement returning, especially some bacterial species of Streptomyces, Bacillales, Clostridiaceae, Lachnospiraceae, Brevundimonas, Azospirillum and Pseudoxanthomonas. 【Conclusion】The soil bacterial community structure and function was relatively stable, and the cellulose-degrading bacteria could be activated quickly after adding moist-heat sterilization silkworm excrement to soil and promoted soil self-healing by increasing their relative abundance. [ABSTRACT FROM AUTHOR]

[Objective] Red-brown purple soil is one of the main type soils of sloping farmland in the hilly areas of Sichuan. Understanding of the bacteria community structure of red-brown purple soil, could help us to gain a better understanding of soil health, increase soil fertility and improve tire quality of regional agricultural and forestry products, and will provide important reference basis for the sustainable use of farmland. [ Method]The bacteria community structure of red-brown purple soil red-brown purple soil of sloping farmland was studied by high-throughput sequencing of 16s rDNA. [ Result]There were 11.39 % of all classified sequences of bacteria detected in red-brown purple soil. Chaos index and Simpson diversity index were 2738. 54 and 0. 99,respectively. Sequences were detected in all samples belonging to 25 bacterial categories, and dominated by Proteobacteria bacteria. Among tire proteobacteria, the relative abundance of (β-proteobacteria, γ-pro-teobacteria, α-proteobacteria and δ-proteobaeteria were 17.29 % , 13. 16 % , and 6. 86 % respectively. Acidobacteria and bacteroidetes were the second dominant groups of bacteria in red-brown purple soil, and their relative abundances were 11.55 and 10. 87, respectively. [ Conclusion] Our study revealed an extensive diversity of soil bacteria in red-brown purple soil. [ABSTRACT FROM AUTHOR]

Pre-eclampsia is a severe complication of pregnancy, which has complicated etiopathogenesis as well as unknown pathogenesis. The injury of vascular endothelial cells is one of the key factors in the pathogenesis of preeclampsia. Endothelial progenitor cells endothelial progenitor cells (EPCs) are precursor cells of endothelial cells, which can home to the site of injury and differentiate into mature endothelial cells, repair damaged blood vessels. The number and function of circulating EPCs during pregnancy may be related to the incidence of preeclampsia and the development of disease process. Release of inflammatory factors induced by ischemia and hypoxia, resulting in the proliferation, migration and differentiation ability of EPCs were decreased, and the ability of angiogenesis was weakened. The damaged endothelial cells can′t be repaired and replenished in time. Endothelial cell injury is aggravated and dysfunction, and then the clinical symptoms such as elevated blood pressure, proteinuria, edema and so on are appeared. EPCs transplantation may become a new method for clinical treatment of preeclampsia. The clarification of regulation factors and mechanism of EPCs will provide the basis for the application of EPCs in the treatment of preeclampsia. [ABSTRACT FROM AUTHOR]

Copyright of Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Gestational diabetes mellitus (GDM) is the most prevalent metabolic disorder disease during the gestation period. Exercise therapy has become one of the basic methods to control the development of GDM for its efficiency in controlling the maternal body mass, reducing the burden of the cardiovascular system, reducing the level of blood pressure and improving the oxygen reserve. At present about the form of exercise, intensity, duration and monitoring of the fetal during pregnancy is still controversial. The safety and comfortable excise is suitable for the pregnant women and load movement should be avoided in the late pregnancy. Normal women keep on moderate aerobic exercise 30 minutes per day during their pregnancy, pay attention to their fetal movement and uterine contraction during the exercise in order to determine whether exercise too much. Exercise therapy can reduce the incidence of GDMand control the progress of GDM. [ABSTRACT FROM AUTHOR]