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《Grassland of China》 2004-01
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The Influence of Fertilizers on the Soil Fertility,Population Structure and Yield of Herbages Grown in Degraded Grassland

LI Ben-ying~1,WANG Jin-fang~1,ZHAO Shi-jie~2, ZHANG Hong-wei~2,ZHAO Ming-xu~2(1.Institute of Soil Science,Chinese Academy of Sciences,Nanjing,210008;2.Grassland Experimental Station,Duolun County,Inner Mongolia,127700,China)  
Two years continuous fertilizing experiments in degraded grassland shown that broad casting coated fertilizer and control release fertilizer (105~135 kgN/hm~2)was an effective measurement for rapid restoration of degraded grassland.The content of available phosphor and hydrolysable nitrogen of soil (0~20cm)were significantly increased by 227%~504%,32%~50%,respectively,compared with CK.Especially,when control release fertilizer(105kgN/hm~2)was broad casted,the dry weight of herbage was 2362.5(kg/hm~2,)it was as many as 5 times of CK,the net income was 221yuan/hm~2,the population structure of herbage has been markedly improved.
【Fund】: 江苏省纵横科技实业有限公司资助项目(5014101)
【CateGory Index】: S812.6
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