【作者】 刘秀珍； 张阅军； 杜慧玲；

【Author】 Liu Xiuzhen Zhang Yuejun Du Hulling College of Resource and Environmental Science ShanXi Agricultural University, TaiGu, 030801

【机构】 山西农业大学资源与环境学院；

【摘要】 在大田条件下,应用三因素五水平二次通用旋转组合设计,研究了间作条件下,不同水肥用量对玉米产量的影响。结果表明:三因素对玉米产量的影响为水>N>P;在水、肥互作效应中,水的效应大于肥,肥效随相对含水量的增加而提高;在N、P互作效应中,在低N下P基本无效,P效随N肥用量的增加而增加;在玉米生育期降水量为201.8mm的干旱年份,玉米获得大于7500kg/hm2产量的灌水量为田间持水量的86%-92%,施尿素764.23kg/hm2-1008.49kg/hm2,施过磷酸钙1054.2kg/hm2-1350.9kg/hm2。更多还原

【Abstract】 Under the conditions of field inter-cropping, by using the three factors five levels quadratic general spinning design, the effects of applied different amounts of N, P fertilizers and water on maize yield were studied. The results showed that the effect of three factors is water>N>P. The effect of water-fertilizer interaction is water more than fertilizer, and fertilizer efficiency increase with the increase of relative water content To the effect of nitrogen-phosphorus interaction, phosphorus is almost ineffective when nitrogen content is low, and phosphorus efficiency increase with the increase of nitrogen fertilizer. In drought year, when the natural rainfall is 201.8mm during growth phase of maize and maize yield more than 7500kg/hm2, the irrigation norm ranges from 86% to 92% of field moisture capacity, application of urea ranges from 764.23kg/hm2 to 1008.49kg/hm2, application of calcium superphosphate ranges from 1054.2kg/hm2 to 1350.9kg/hm2.更多还原