Effect of magnesium on fertilizer-utilized coefficient of nitrogen, phosphorus and potassium as well as grain yield in maize
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Abstract
The application of magnesium (Mg)shows a curved correlativity with the fertilizer-used efficiency of N,P and K.The moderate application of Mg is very conspicuously promotive of maize absorption to N,P,and K.The application of MgO (66.7kg/hm2)in this test,of which the fertilizer utilization coeficient of N,P,and K increases 27.61%,18.03%and 118.73% respectively than that of the comparison and the yield increases by 6.19%.enhances the contents of protein.1ysine and starch being 3.40%,7.14%,and 17.15% respectively and reduces the contents of fat and sugar being 2.59% and 10.86% respectively.Over fertilizing Mg has a tendency to inhibit the accumulation of N ,P,and K in plant and it is no good for yield.
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