【摘要】 采用四因子二次通用旋转设计，研究了砂土地施用有机肥、氮肥、磷肥和钾肥对花生产量的作用及最适配比和因子之间的交互作用及其对土壤肥力的影响。结果表明：有机肥、氮肥、磷肥和钾肥与花生产量呈二次回归关系，砂土地要提高产量和培肥地力应立足于肥料配合施用，重施有机肥，酌情多施钾肥和磷肥。更多还原

【Abstract】 A quadratic common rotary design with four factors was used to study the effects of combining application of N,P,K and organic fertilizer on peanut yield in sandy soil.The results indicated that there was a quadratic regression equation between peanut yield and application amounts of N,P,K and organic fertilizer. To increase peanut yield and raise soil fertility combining application of fertilizer should be emphasized with increasing amount of organic fertilizer applied and supplemented with P and K.更多还原