Effect On Dry Matters And Nitrogen Accumulation And Transport And Yield Of Spring Maize Under Different Compound Fertilizer

Based on many kinds of mixed controlled fertilizer、effective components with different blending ratio in the maize production at present.In Inner Mongolia 5 experimental point study the effect of the one-time use of sustained release compound fertilizer on dry matters accumulation and transport、nitrogen accumulation and transport、nitrogen fertilizer efficiency and SPAD and so on,in order to clear the differences of the one-time use compound fertilizer and conventional nitrogen phosphorus potassium fertilizer. The results showed that:(1) Though the one-time use of compound fertilizer applied on the growth of spring maize, there is no effect on the absorption of nitrogen accumulation in the late growing stage.(2) The one-time use of compound fertilizer can improve the aboveground dry matter、 nitrogen accumulation and transshipment of spring maize on the growth period.(3) The one-time use of compound fertilizer can improve the leaf area index and net photosynthesis of spring maize.(4) The one-time use of compound fertilizer has no significant different with traditional fertilizer model on the efficiency of nitrogen.(5) The yield and nitrogen efficiency of one-time use of compound fertilizer have no difference with CK, but can leave out the top application procure, which can save labor and production cost and can reduce cost.