论文部分内容阅读
在吉林省蛟河市对玉米进行“3414”肥效试脸,拟合了肥料效应三元二次方程和一元二次方程。通过三元二次方程得出,在该土壤条件下氮、磷、钾最高施肥量为(kg/hm2)N-P2O5-K2O=212.24-57.0-78.3,对应的最高产量为10 551.5 kg/hm2;最佳施肥量(kg/hm2)N-P2O5-K2O=168.4-55.4-63.2,对应的产量为10 432.7kg/hm2。通过拟合一元二次方程得出,在该土壤条件下氮、磷、钾最高施肥量为212.1 kg/hm2、67.0 kg/hm2、64.0kg/hm2;最佳经济施肥量184.1 kg/hm2、63.0 kg/hm2、60.3 kg/hm2。
In Jiaohe City, Jilin Province, corn was tested on the effect of “3414” fertilizers, fitting the fertilizer effect three quadratic equation and one quadratic equation. According to the ternary quadratic equation, the highest N, P, K fertilizer amount was (kg / hm2) N-P2O5-K2O = 212.24-57.0-78.3 under the soil conditions, corresponding to the highest yield of 10 551.5 kg / hm2 ; The best fertilizer (kg / hm2) N-P2O5-K2O = 168.4-55.4-63.2, the corresponding yield was 10 432.7kg / hm2. According to the fitting quadratic equation, the maximum fertilization amount of nitrogen, phosphorus and potassium was 212.1 kg / hm2, 67.0 kg / hm2 and 64.0 kg / hm2 respectively in this soil condition; the best economic fertilizer amount was 184.1 kg / hm2 and 63.0 kg / hm2, 60.3 kg / hm2.