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Aiming at the problems of the unreasonable fertilization, the increase of quantity, decrease of quality in supply and so on in the production of protected vegetable in Hebei Province, facility tomato was as the research object, treatments of farmers' habit fertilization and different fertilization measures were set to study on tomato yield, quality, nutrient utilization and economic benefits. The results showed that compared with the treatment of farmers' habit fertilization, rational formula fertilizer and its combination with biological bacteria and calcium fertilizer could improve tomato single fruit weight 2.9%-29.7%, yield 3.8%-43%, dry matter accumulation 0.62%-17.4%, N and P absorption and utilization 26.2%-74.1%, 24.6%-71.6%, improve fruit Ve up to 6.4%, soluble sugar up to 34.4% and decrease total acidity up to 15.7%, in- crease pure economic benefit. IFI2 (inorganic formula fertilizer combined with biological fertilizer produced by Chunyu) and IFI3 (inorganic formula fertilizer combined with self-made bacteria agent and calcium fertilizer) had better comprehensive effect. [ABSTRACT FROM AUTHOR]

In order to explore the response of rice growth, development, and nutritional characteristics to zinc fertilizer in the Yangzi River Basin. Field experiment with four plots were set up with no fertilizer (CK), farmers’ customary fertilizer practice (FFP) and zinc fertilizer (ZnSO4 7H2O) of 20 and 40 kg / hm2 (FFP+Zn20, FFP+Zn40) based on FFP to study the effects of zinc fertilizer on rice growth, yield, and nutrient absorption. The results showed that compared with FFP, FFP+Zn20 and FFP+Zn40 increased 1 000-grain weight and seed-setting rate of rice,with FFP+Zn40 achieving a significant increase in the 1 000-grain weight and seed-setting rate(P<0. 05). The yield and net benefit of FFP+Zn40 were the highest in the four treatments, increasing significantly by 14. 5% and 15. 6% compared with FFP. The combined application of N and Zn is beneficial for the increase of N and Zn content in the leaves, stems, sheaths, and panicles of rice at maturity, with FFP+ Zn40 having the highest increase. Increasing the application of zinc fertilizer is beneficial for increasing yield, income, and quality of rice in the region. The application of N,P2O5,and K2O at 164, 54, 126 kg / hm² respectively, combined with the application of ZnSO4·7H2O at 40 kg / hm² in the base fertilizer soil, has the best effect. [ABSTRACT FROM AUTHOR]

Three treatments of sprayed humic acid water-soluble fertilizer (TF), fresh water (TW) and conventional fertilization without spraying (CK) were set up in a plot experiment to study the effects of spraying humic acid water-soluble fertilizer on the growth, yield, nutrient contents and economic benefits of asparagus. The results showed that TF was significantly superior to TW and CK in terms of the biological characteristics of asparagus stems (number of stems per plant, length, stem thickness and mass). TF increased significantly asparagus yield by 9. 5% and 13. 1% compared with TW and CK (P<0. 05), respectively. TF significantly (P<0. 05) increased the total flavonoids, saponins and polysaccharides contents of asparagus shoots by 6. 8%, 2. 9% and 15. 1%, respectively, compared with CK. However, the amino acid content of asparagus shoots from the three treatments did not differ significantly (P>0. 05). TF increased the net economic benefits of asparagus by 9 966 and 12 552 yuan / hm 2 compared with TW and CK, respectively. Therefore, spraying humic acid water-soluble fertilizer on asparagus is worth further popularization and application. [ABSTRACT FROM AUTHOR]

The application effects of 10%, 20%, 30% and 40% of chemical fertilizers were respectively reduced under the application rate of commercial organic fertilizer 45 t/hm² to screen out the best ratio of organic fertilizers to replace chemical fertilizers suitable for honey peach in Xinyi area. The yield and quality of juicy peaches were statistically determined, and the economic benefits and fertilizer agronomic efficiency of organic fertilizer substitution were analyzed. The analysis of economic benefits and fertilizer utilization showed that although the cost of increasing organic fertilizer and reducing chemical fertilizer application by 10% and 20% was higher than that of increasing organic fertilizer and reducing application by 30% and 40%, the yield increased more and the economic benefit increased. The overall economic benefits and fertilizer agronomic efficiency were improved. The replacement of chemical fertilizers with organic fertilizers could improve fruit quality and potentially increase economic benefits. The treatment of replacing chemical fertilizer with organic fertilizer increased the fertilizer agronomic efficiency, and reducing the application rate by 10% and 20% was the best for the use efficiency of chemical fertilizer. [ABSTRACT FROM AUTHOR]

The purpose of this study is to explore whether remote visual control curing has the value of popularization and application, through the comparative experiment of remote control curing and field curing, the middle leaf (11-13 leaf position) of Yunyan 99 flue-cured tobacco variety was selected as the experimental material. It is concluded that although the economic benefit, chemical composition content and sensory evaluation quality of flue-cured tobacco after remote control are slightly worse than that of on-site curing, the difference is not significant, and the cured tobacco can still reach the level of high-quality tobacco. To sum up, remote visual control and curing can reach the level of on-site curing, and in the process of development in the future, it is still necessary to upgrade and improve remote visual control and curing. In order to achieve the immediate supervision of tobacco curing process and effective data collection, fundamentally ensure tobacco curing quality and improve curing efficiency. [ABSTRACT FROM AUTHOR]

As a main dual-purpose cluster bamboo for bamboo shoots and timbers in southern China, Dendrocalamus latiflorus is the rare tree species that can be processed and utilized with high utilization value. As an important economic tree species, Dendrocalamus latiflorus can be used as high-quality industrial material and plays an important role in the development of bamboo processing industry. Moreover, Dendrocalamus latiflorus has strong environmental adaptability, water conservation and slope protection. In this paper, the processing and utilization of Dendrocalamus latiflorus were discussed, and the natural distribution, biological characteristics, bamboo processing and utilization, bamboo shoot processing and utilization, processing and utilization of forest by-products were summarized. The problems and countermeasures of the development of Dendrocalamus latiflorus processing industry were put forward, in order to provide theoretical guidance for high-quality, efficient and sustainable industrial development, and promote the related research and development and utilization of Dendrocalamus latiflorus. [ABSTRACT FROM AUTHOR]

[Objective] In order to explore the application effect of slow/controlled release fertilizer suitable for corn planting in the southern Hebei plain. [Method] The maize variety Hanyu 398 and three common slow/controlled release compound fertilizers of maize were selected as materials for field experiment. The effects of different types of slow/controlled release fertilizers on maize yield, economic benefit and fertilizer efficiency were analyzed. [Result] The yield, profit, and agronomic utilization efficiency of corn treated with sulfur coated slow/controlled release compound fertilizer decreased by 1.95%, 3.27%, and 8.27%-31.21% compared to conventional compound fertilizer, respectively; the application of resin coated slow/controlled release compound fertilizer increased corn yield by 0.65%, but reduced profit, total nutrient content, phosphorus and potassium partial productivity, and total nutrient agronomic utilization efficiency by 1.45%, 22.59%, 49.67%, 49.67%, and 20.09%, respectively; the application of urea formaldehyde slow-release/controlled-release compound fertilizer increased com yield, profit, partial productivity, and agronomic utilization efficiency by 5.98%, 5.50%, 5.99%, and 25.22%, respectively, compared to conventional compound fertilizer, and significantly increased yield and profit. [Conclusion Based on comprehensive analysis, urea formaldehyde slow-release/controlled release compound fertilizer can be recommended as a priority for corn cultivation in the southern Hebei Plain region. [ABSTRACT FROM AUTHOR]