%0 Journal Article
%T Response of farmland with different natural quality to farm field input<br>农田投入在不同自然质量耕地上的响应分析
%A CHEN Ya-Heng
%A LIU Hui-Ling
%A LI He-Jing
%A HUO Xi-Liang
%A XU Hao
%A <br>陈亚恒
%A 刘会玲
%A 李贺静
%A 霍习良
%A 许 皞
%J 中国生态农业学报
%D 2009
%I 
%X To analyze the effect of field input on grain yield and economic benefit of farmlands, we used wheat-corn double crop-ping fields in northern Taihang Mountain Plain region of central Hebei to analyze the degree of response to input from farmland quality on basis of factor combination, hypothesis testing, regression analysis and agricultural land grade. The results suggest that grain yield can be improved by scientifically and reasonably increasing field input or using a combination of factors at low input. High yield on farmlands with poor natural conditions can be achieved through scientific and reasonable input. The optimal value of field input is within the interval between the maximum input-output benefit and maximum grain yield. Reasonably adjusted input based on differences in the influence of natural factors on grain yield and different factor combinations can increase yield significantly.
%K Agricultural land grade
%K Natural quality of farmland
%K Factor combination
%K Degree of field input
%K Input interval<br>农用地分等
%K 耕地自然质量
%K 因素组合类型
%K 农田投入水平
%K 投入区间
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=C6B1208F5F35E0E0B8808275A63085FE&yid=DE12191FBD62783C&vid=BCA2697F357F2001&iid=CA4FD0336C81A37A&sid=2DBBF45CC176713E&eid=E2546871E5B846EF&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=1&reference_num=11