紫花苜蓿NP肥配施研究  

A STUDY ON NAND PAPPLIED OF ALFALFA

作　　者：张积祥[1] 李松[1] 

机构地区：[1]黄委会西峰水土保持科学试验站

出　　处：《草业科学》1990年第4期70-72,共3页Pratacultural Science

摘　　要：本文对陇东黄锦土区苜蓿 NP 配施做了初步研究,研究表明:苜蓿施 N 和 NP 配施无效果,则施P效果显著。其回归方程为 Y=353.42+25.89x-1.87x;最高产量施 P 量为6.9kg/亩;最佳经济产量施 P量为3.71kg/亩;最好利润为28.83/亩。研究还确定了最大利润率的施 P 量。阐述了施 P 肥不仅能增加苜蓿的产量、而且在促进生态系统的良性循环过程中都起到了积极的作用。It has been preliminary studied that N and P are applied in proper proportions for alfalfa on yellow mein soil in Gansu E.Which show:There are not affects appling N and P in proper pro- portions;and remarkable effects appling P,which regression equation as y=353.42+25.89x-1.87x^2,the highest output using P 6.9kg/mu and the best economic yields with 3.71kg/mu and the best profits as 28.83yuan/mu;it are determined that the biggest profit rots.That not only rise the yields,but also promote better cyeles of ecosystem appling P.

关 键 词：苜蓿 紫花苜蓿 NP肥 施肥 

分 类 号：S551.706.2[农业科学—作物学]