Effects Of Applying Fertilizer On Nutrient Absrption,Yield And Quality Of Silage Maize

With Dong Ling Bai , through the methods of field experiment,chemical analysis and biological statistics ,the effects of applying N,P,K,Zn fertilizer on formative law of yield and the absorption of N,P,K and nutrient quality were researched.The resualts were as follwings: (1) During the period of the growth ,the relations of the concentration and the amount of absorption and accumulation of N,P,K and applying fertilizer were analyzed,the ralations of the changing regulation of absorption rate and applying fertilizer were analyzed.The absorbtion requirements of N,P,K,Fe,Mn,Cu,Zn of 1000kg hay were offered.(2) With the condition of different fertilizer,the relations of the yield of fuck the material and protien and the amount of nutrient absorption of N,P,K and days were analogued by the equation:Y=a+bx+cx2+dx3.The fastest rate and appearance time of absorbtion of N,P,K and accumulation of dry matter and protien were analogued . (3) N,P,K,fertilizer increased the fresh grass yield significantly,50.2% by N fertilizer,36.4% by P fertilizer,13.2% by K fertilizer,but the effects of Zn fertilizer on yield is not significant. (4) Make clear that the effects of applying fertilizer on the contents and yield of crud fiber and crud protien and fat and dissolubility sugar of single stub and stock and leaf . (5) The effects of applying fertilizer on the contents and single stub yield of crud ash,P,K,Fe,Mn,Cu,Zn of single stub and stock and leaf were cleared.The all offered the science theory of applying fertilizer for the heigher yield and quality silage maize.