| 麦稻两季秸秆还田不同施氮量对水稻产量及其产量结构的影响 |
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| 引用本文： | 杨美英,刘建,魏亚凤,李波.麦稻两季秸秆还田不同施氮量对水稻产量及其产量结构的影响[J].江西农业学报,2011,23(1):62-64. |
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| 作者姓名： | 杨美英 刘建 魏亚凤 李波 |
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| 作者单位： | 江苏沿江地区农业科学研究所,江苏,南通,226541 |
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| 基金项目： | 农业部公益性行业科研专项，国家863计划子课题 |
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| 摘 要： | 研究了麦稻两季秸秆还田条件下,麦季不同氮肥用量(纯N 180、225、270 kg/hm2)和水稻不同氮肥用量(纯N225、300、375 kg/hm2)对水稻产量及其产量结构的影响。结果表明:麦季氮肥用量对后茬水稻产量、单位面积穗数、每穗粒数和千粒重的影响较小,在每公顷施氮(N)180~270 kg范围内差异未达显著水平;水稻氮肥用量对水稻产量及其构成因素的影响较大,在每公顷施N 225~375 kg范围内,随着施氮水平的提高,对水稻的增穗效果明显,3个施氮量处理间的差异显著,对每穗粒数的影响不大,但水稻结实率降低、千粒重下降,施N 375 kg/hm2的处理与225 kg/hm2、300 kg/hm2两处理间的差异达显著水平,产量随着施氮水平提高而增加,但施N 375 kg/hm2与300 kg/hm2处理间的差异不显著。
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| 关 键 词： | 麦稻两熟制 秸秆还田 施氮量 水稻产量 水稻产量结构 |
Effects of Different Nitrogen Application Rates on Rice Yield and Yield Components under Condition of Returning Wheat Straw and Rice Straw to Field |
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| YANG Mei-ying,LIU Jian,WEI Ya-feng,LI Bo.Effects of Different Nitrogen Application Rates on Rice Yield and Yield Components under Condition of Returning Wheat Straw and Rice Straw to Field[J].Acta Agriculturae Jiangxi,2011,23(1):62-64. |
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| Authors: | YANG Mei-ying LIU Jian WEI Ya-feng LI Bo |
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| Institution: | (Institute of Agricultural Sciences in Riparian Region of Jiangsu Province,Nantong 226541,China) |
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| Abstract: | Under the condition of returning wheat straw and rice straw to the wheat-rice rotation cropping field,the effects of different nitrogen application rates(pure nitrogen 180,225 and 270 kg/hm2 in wheat cropping season;pure nitrogen 225,300 and 375 kg/hm2 in rice cropping season) on the yield and yield components of rice were studied.The results showed that the application rate of nitrogen in wheat cropping season had little influences on the yield,panicles per unit area,grains per panicle and 1000-grain weigh... |
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| Keywords: | Rotation cropping of wheat and rice Returning straw to field Application rate of nitrogen Rice yield Yield component |
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