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《Journal of Lanzhou University of Technology》 2008-06
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Effects of attapulgite clay on nutrient content in irrigation-silted soil and wheat growth

YUAN Hui-jun1,LIU Zuo-jun1,ZHANG Xu-xia1,CHEN Xiao-qian1 LI Chun-lei2,HAO Yuan3(1.College of Life Science and Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050,China;2.College of Petrochemical Technology,Lanzhou Univ.of Tech.,Lanzhou 730050,China;3.College of Materials Science and Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050,China)  
Effects of attapulgite clay on nutrient content in irrigation-silted soil,wheat growth and yield components were studied by means of planting the wheat in a pot.Results showed that applying the attapulgite clay into the soil had no influence on its quick-acting nutrient.However,the N-content of the soil would decrease when the dose of attapulgite clay in soil was more than 40 g/kg.The biomass,above-ground biomass,spike length,spikelet number,grain number and grain weigh would be decreased while sterile spikelet number increased.When the dose was less than 40 g/kg,no effects were demonstrated on these yield components.With foregoing dose of attapulgite clay in soil increased,kilo grain weigh would be increased.When the dose of attapulgite clay in soil was 80 g/kg,the top kilo grain weigh would be achieved.
【Fund】: 科技部国际科技合作项目(2004DFB00200)
【CateGory Index】: S158;S512.1
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