有机肥与化肥配施对水稻土B层速效磷积累量的影响

Effect of Mixed Application of Organic and Inorganic Fertilizers on Content of Available Phosphorus in B Horizon of Paddy Soil

摘要:

采用二次饱和D-最优设计,研究了有机肥与化肥配施对水稻土B层速效磷积累量的影响,并建立了数学模型,同时解析了各因素对水稻土B层速效磷积累量的影响,提出了减少B层速效磷积累量的施肥方案

Abstract:

The paper studied the effect of mixed application of organic and inorganic fertilizers on content of available phosphorus in B horizon of paddy soil with saturated D_optimal design for quadratic regression,established mathematical model,analyzed effects of all kinds of factors on content of available phosphorus in B horizon of paddy soil,and offered a fertilizer applying plan to reduce content of available phosphorus in B horizon of paddy soil.