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Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics 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 Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & Technology 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 Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board 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.)

In order to investigate the effects environmental factors on characteristics of tea garden soil carbon, nitrogen and phosphorus contents and their ecological stoichiometric, soil samples were collected from the 0 ~ 20 cm soil layers of main tea gardens different with altitudes and planting years in Jiangxi Province, which were used to determine soil SOC, TN and TP contents and calculate stoichiometric ratios. The results show these as follows. The average contents of soil SOC and TN in tea garden were 13. 84 g / kg and 1. 37 g / kg, respectively, which were higher than the average level of national soil and reached the fertility standard of grade-I tea garden. The average content of soil TP was 0. 47 g / kg, which was lower than the average level of national soil and reached the fertility standard of grade-II tea garden. The mean values of soil C∶N, C∶P and N∶P were 10. 97, 32. 61 and 3. 49, respectively, which were lower than the average level of national soil. It showed that soil phosphorus had high availability, while soil nitrogen was relatively deficient. With the increase of altitude, soil SOC content, C∶N, and C∶P showed a trend of first decreasing and then increasing, while soil TN content, TP content, and N∶P showed no obvious change. With the increase of planting years, soil SOC content, TN content and C ∶P all showed an increasing trend. Soil N∶P showed a trend of first increase and then decrease, and soil C∶N showed a trend of first decrease and then increase, while the of soil TP content was not obvious. These results can provide reference for judgment of nutrient-limited elements and scientific management of tea gardens in Jiangxi. It is suggested that nitrogen fertilizer should be appropriately applied to tea gardens to maintain the balance of nitrogen and phosphorus. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agricultural Resources & Environment / Nongye Ziyuan yu Huanjing Xuebao is the property of Journal of Agricultural Resources & Environment Editorial Board 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 Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology 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.)