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《Journal of Triticeae Crops》 2006-02
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Effect of Sulfur and Nitrogen Fertilizer Combined Application on Grain Filling Characteristics of Wheat Yumai 34 with High Gluten

LI Guo-qiang,ZHU Yun-ji,GUO Tian-cai,WANG Chen-yang,MA Dong-yun,SHEN Xue-shan(Henan Agricultural University / National Engineering Research Centre for Wheat,Zhengzhou,Henan 450002,China)  
Under field conditions,changes of grain filling of high-gluten winter wheat cultivar Yumai 34 were studied in Zhengzhou experimental site in Henan during the 2003~2004 and 2004~2005 growing seasons,which aimed at understanding the effect of sulfur and nitrogen fertilizers combined application on grain filling.Grain filling course was imitated by logistic equation,and the specific property of grain filling was analyzed by T test.The result indicated that under sulfur and nitrogen fertilizers combined application conditions,the process of grain filling was S curve,The logistic equation was at significant level(R~20.9981).There were variance among average filling rate(V_a),filling duration time(T) and biggest filling rate(V_m) in different treatments.Sulfur and nitrogen combined application could improve K,V_m,V_a,and extend T.
【Fund】: 国家科技部粮食丰产科技工程项目(2004BA520A-06);; 河南省重大科技攻关项目(0522010100)
【CateGory Index】: S512.1
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