%0 Journal Article
%T Systemic study on nutrients in irrigation desert soils of Gansu Province<br>甘肃省灌漠土养分的研究
%A ZHAO Liang-Ju
%A LIU Xia-Hong
%A XIAO Hong- Lang
%A GUO Tian-Wen
%A <br>赵良菊
%A 刘晓宏
%A 肖洪浪
%A 郭天文
%J 中国生态农业学报
%D 2004
%I 
%X In this paper, with the pot experiment and field experiment, the status of nutrients of irrigation desert soils at Minqin County in Gansu Province is studied. The results show that the limiting factors nutrients of irrigation desert soils are the deficiency of N, P, Cu, Fe, and Zn. The relative yields of sorghum from the soils non-applied with N, P, Cu, Fe and Zn are 47.38%, 68.77%, 70.91%, 78.40%, and 80.21% respectively. In field experiment, the limiting factors nutrients are N and P fertilizers. Based on the treatment of OPT, the application of N and P fertilizers can enhance the yield of corn prominently and the increasing amplitudes are 11.95% and 22.60% respectively, while reducing the N application decreases the yield prominently and the decreasing amplitude is 10.40%.
%K Irrigation desert soils
%K Soil nutrient
%K Scientific application fertilizer<br>灌漠土
%K 土壤养分
%K 科学施肥
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=83C590B4DF2AE792&yid=D0E58B75BFD8E51C&vid=59906B3B2830C2C5&iid=CA4FD0336C81A37A&sid=03F1579EF92A5A32&eid=D767283A3B658885&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=0&reference_num=4