Abstract:

Nitrogen assimilation and efficiency of usage are different for different varieties of wheat. In order to study the differences of assimilation and efficiency of usage for different varieties, choose ten wheat varieties with large promotion area in North China Plain area as materials, and adopt randomized group design. The research studies different influences of spring nitrogen treatment on different wheat varieties on different soluble sugar and yield during 2009-2010. The research showed that different nitrogen treatment had little influences on different wheat varieties at jointing stage, while it could improve the soluble sugar of wheat varieties at blooming stage. Different nitrogen treatment had influence on production of wheat, and improved the production of wheat, and the 8th (‘Zhongke9818’) has the maximum output, among the varieties tested. The test showed that spring nitrogen treatment was conducive to improving the wheat in the latter part of Carbon metabolic ability so as to increase production. The result provides foundation of the efficient breeding production and appropriate nitrogen provision.