单种玉米磷肥不同用量对产量的影响

Effect of Different Dosage of Phosphate Fertilizer on Yield of Single-cropping Corn

对单种玉米产量与最佳施磷量之间的关系进行了探索研究,结果表明:随着磷肥施肥量的增加,玉米各产量构成因素成正比增加,产量增加,同时建立玉米产量(Y)与施磷量(X)之间的回归方程,Y=900.557 1+9.098 571 X-0.591 27 X2,得出单种玉米最佳施磷量为115.5 kg/hm2,此时玉米产量预报值为15 085.5 kg/hm2。

A study was made on the relationship between the yield of the single-cropping corn and the optimum application rate of phosphorus fertilizer. The result showed that with the increase of the application rate of phosphorus fertilizer, the corn yield component factors increased proportionally and the yield increased. A regression equation between the corn yield （Y） and phosphorus application rate（X） is established： Y=900.557 1＋9.098 571X-0.591 27X2 and the optimum application rate of phosphorus fertilizer for single-cropping corn is 115.5 kg/hm2 and with this the corn yield prediction is 15 085.5 kg/hm2.