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zen yang que ding zuo wu ji hua shi fei liang
Author(s): 
Pages: 93-97
Year: Issue:  5
Journal: JOURNAL OF WEINAN TEACHERS COLLEGE(NATURAL SCIENCE)

Keyword:  养分总量肥料利用率土壤供肥量经济产量计划产量;
Abstract: 为了减少肥料在农业生产总投资中所占比重,既要提高农作物产量,又不浪费肥料,确保增产增收.本文特提出确定作物计划施肥量的方法.即根据计划产量所需养分总量、土壤供肥量、肥料中某要素的含量以及该肥料的利用率来求得计划施肥量.
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