%0 Journal Article
%T Yield and Economic Benefit of Corn Ground Covered with Plastic Film in Zhangye City,Gansu Province<br>张掖市地膜玉米产量和经济效益模型的研究
%A Xu Cuncai
%A <br>徐存才
%J 中国生态农业学报
%D 1995
%I 
%X Effects of density and nitrogen and phosphate fertilizers on yield and economic benefit of corn ground covered by plastic film and the interrelations of the three factors were studied by revolving regression designed field experiment.Based on the experimental data a regressive yield and economic model were established.Then based on analysis of the model suitable rate of dressing of the two fertilizer at current condition can be determined.It was also concluded that for increasing the corn yield and economic benefit nitrogenous fertilizer is more important than density,and density is more important than phosphate fertilizer.
%K Corn ground covered by plastic film
%K Yield model
%K Economic model<br>玉米
%K 产量模型
%K 经济效益模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=04166B54368C64EFDF87014840B7B8A1&yid=BBCD5003575B2B5F&vid=38B194292C032A66&iid=CA4FD0336C81A37A&sid=AA76E167F386B6B3&eid=80A07035DF96B0C4&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=0&reference_num=0