Effects of Water and Nitrogen Location Study on Grain Filling Characteristics and Yield of Crop Rotation and Multiple Cropping

doi:10.7668/hbnxb.2010.03.034

Abstract

Abstract: Field experiment was conducted during 2008-2009, the effects of water and nitrogen on the kernel filling process of summer maize and winter wheat were observed and analyzed, in order to provide the framework for reasonable irrigation and fertilization, based on a 2-3 years location study.The result indicated that the kernel filling process could be described with Logistic equations.Maize grain weight was showed a parabola type with nitrogen amount, the anthesis irrigation of summer maize decreased grain weight under high nitrogen amount.Winter wheat grain weight decreased as nitrogen amount increased, the anthesis irrigation of winter wheat improved grain weight remarkly.The mean grain fillling rate and the grain filling time were positive correlation for grain weight, but was negative correlation remarkly between the mean gran fillling rate and the grain filling time( R =-0.966 7).Summer maize had the highest yield when it irrigated one time and fertilized 480 kg/ha.Winter wheat had the highest yield when it irrigated three times and fertilized 480 kg/ha．

Key words: Water and nitrogen location study, Summer maize, Winter wheat, Grain filling characteristics, Yield

CLC Number:

GUO Li,, ZHANG Feng-lu, JIA Xiu-ling, REN Hui-fang, DONG Zhi-qiang, ZHANG Li-hua, XING Su-li. Effects of Water and Nitrogen Location Study on Grain Filling Characteristics and Yield of Crop Rotation and Multiple Cropping[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(3): 159-164. doi: 10.7668/hbnxb.2010.03.034.

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