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Nitrogen application on the production performance of silage maize

WANG Yuan-qing1,ZHANG Rui-zhen2,HE Guang-wu2,et al.(1.Fodder and Forage Grass Station of Dazhou City,Sichuan Dazhou 635000,China;(2.General Grassland Station of Sichuan Province,Sichuan Chengdu 610041,China)  
District on a pilot basis by the management,under the same density,Aoyu 5102 and nongda 3188 two varieties of silage corn were fertilized nitrogen 300,375,450,525 kg/hm2 respectively.The results showed that 4 fertilization levels of the summer corns' phenology and yield had no significant effect on the grass;nitrogen level of 300 kg/hm2 had maximum height,largest proportion of green leaves,maximum weight per plant,and lowest cost;nitrogen 525 kg/hm2 level had the highest survival rate of plants.
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