%0 Journal Article
%T On the System Engineering for Rational Fertilization<br>论施肥系统工程
%A Zhuang Hengyang Cheng Jingsheng Shen Xinping
%A <br>庄恒扬
%J 系统工程理论与实践
%D 1993
%I 
%X The authors Consider that rational fertilization is a system engineering. Its main tasks are chemical fertilizer allocation, recommended fertilization,and the regionalization, forecast and plan of fertilizers for improving social, ecological and economic benefits of fertilizer use. The structure, basic steps and some quantitative relations in the system engineering are put forward and analysed.
%K agricultural system engineering
%K recommended fertilization
%K fertilizer response function
%K chemical fertilizer allocation<br>agricultural
%K system
%K engineerin
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=962324E222C1AC1D&jid=1D057D9E7CAD6BEE9FA97306E08E48D3&aid=4207FF664C68E164F85587285135CB1A&yid=D418FDC97F7C2EBA&vid=FC0714F8D2EB605D&iid=CA4FD0336C81A37A&journal_id=1000-6788&journal_name=系统工程理论与实践&referenced_num=0&reference_num=0