The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Establishment of model for optimal fertilization and determination of fertilization parameters of rice in Tongliao
Author(s): 
Pages: 61-65,90
Year: Issue:  1
Journal: Journal of Yangzhou University(Agricultural and Life Science Edition)

Keyword:  水稻施肥模型施肥参数;
Abstract: 采用“3414”二次回归最优设计试验方案,研究氮(X1)、磷(X2)、钾(X3)肥配施对水稻产量的影响,并对水稻产量和施肥量关系进行模拟.结果表明:水稻产量(Y)与肥料用量之间的数学模型为Y=301.48+178.19X1 +27.64X2+40.29X3 -56.18X12-22.08X22-13.05X32+22.87X1X2+6.14X1X3+2.93X2X3,该模型的最高产量施肥量为235.5(纯氮),84.0(P2O5)和84.0(K2O) kg·hm-2,最高产量为8 371.95 kg· hm-2,施肥配比为1 ∶0.36∶ 0.36.该试验区土地肥力情况为氮素水平低下,磷素、钾素水平中等.肥料利用率氮肥为40.1%、磷肥为17.5%、钾肥为41.0%,土壤养分校正系数分别为0.51(氮)、1.14(磷)、0.56(钾).
Related Articles
loading...