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Effect of Fencing on Soil Characteristics of Degraded Pasture

LI Jing-gang et al(College of Informatics of South China Agricultural University,Guangzhou,Guangdong 510642)  
The soil physical and chemical characteristic and humus characteristics in long term fencing soil from Leymus chinensis grassland and Stipa grandis grassland in Xilinguole League of Inner Mongolia Autonomous Region were studied.The results showed that soil bulk density and surface hardness were reduced and soil porosity and capillary capacity were increased after animal raising shut with fencing.The contents of organic matter,total nutrient and available nutrient in fencing soil from Stipa grandis grassland were all increased.The contents of available N and available P in fencing soil from Leymus chinensis grassland were increased,but the contents of organic matter and total N were decreased in some degree.
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