【摘要】 采用4因素饱和设计,定位研究了农家肥、麦草、氮、磷化肥配施对旱地小麦土壤水分生产效率的影响,并建立了相应的数学模型。结果表明,在相同降水条件下,通过不同的施肥措施,可使旱地小麦土壤水分生产效率提高3倍以上。4种肥料对土壤水分生产效率影响的顺序为;氮肥>农家肥>磷肥>麦草。其中农家肥和氮肥是正效应,麦草和磷肥呈负效应;各肥料间尚有一定的交互效应。当前提高羊地小麦水分生产效率的较好的肥料结构为:农家肥7500kg/亩,氮肥12.5 kg/亩,磷肥2～5kg/亩,不施用麦草。更多还原

【Abstract】 The effects of four fact.or including farm manure, wheat-straw, N and P fertilizer application on soil water production efficiency of dryland wheat by saturated designed field experiments were studied and a set of mathematical model were put forward by statistical analysis with computer, experimental result showed that soil water production efficiency of dryland wheat was increased by three-fold with different fertilizer application. The sequence of effect of four fertilizer on soil water production efficiency was N fertilizer>farm manure>P fertilizer>wheat-straw. Among those factor farm manure and nitrogenous fertilizer were positive effects, wheat-straw and phosphate fertilizer were nogative effcts. Now better fertilizer structure to raise soil water production efficiency of dryland wheat can be marked out and isled below., farm menure is 7500kg/mu, Nitrogenons fertilizer is 12.5 kg/mu, phosphate fertilizer is 2～5 kg/mu, wheat-straw can not be applied.更多还原