| 施钾量对超高产早稻品种产量和稻米品质的影响 |
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| 引用本文： | 才硕,潘晓华,吴建富,石庆华.施钾量对超高产早稻品种产量和稻米品质的影响[J].江西农业学报,2011,23(5):1-5,9. |
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| 作者姓名： | 才硕 潘晓华 吴建富 石庆华 |
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| 作者单位： | 江西农业大学作物生理生态与遗传育种教育部重点实验室、农业部双季稻生理生态与栽培重点开放实验室,江西南昌,330045 |
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| 基金项目： | 国家“十一五”科技支撑计划项目(2006BAD02A04); 江西省科技攻关项目(20051B020010); 农业部超级稻配套栽培技术集成与示范项目(2009-9)资助 |
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| 摘 要： | 以超高产水稻品种陆两优996和淦鑫203为材料,在大田条件下研究了不同施钾量对其产量和稻米品质的影响。结果表明,施钾显著提高双季早稻有效穗数、每穗粒数和产量,增加生物产量、促进茎鞘物质运转,提高抽穗期剑叶的气-叶温差和颖花伤流量,降低抽穗后的根系活力衰退值。施钾量与倒1节间大维管束数、茎秆抗折力和稻米蛋白质含量显著正相关。施钾提高了陆两优996的垩白粒率和垩白度,但降低了淦鑫203的垩白粒率和垩白度。在本试验条件下,最适施钾量为180 kg/hm2。
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| 关 键 词： | 双季早稻 施钾量 产量及其构成因素 稻米品质 |
Effects of Potassium Application Rate on Yield and Quality of Superhigh-yielding Early Rice Varieties |
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| CAI Shuo,PAN Xiao-hua,WU Jian-fu,SHI Qing-hua.Effects of Potassium Application Rate on Yield and Quality of Superhigh-yielding Early Rice Varieties[J].Acta Agriculturae Jiangxi,2011,23(5):1-5,9. |
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| Authors: | CAI Shuo PAN Xiao-hua WU Jian-fu SHI Qing-hua |
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| Affiliation: | CAI Shuo,PAN Xiao-hua,WU Jian-fu,SHI Qing-hua(Key Laboratory of Crop Physiology,Ecology and Genetic Breeding,Ministry of Education,Jiangxi Agricultural University,Key Laboratory of Physiology,Ecology and Cultivation of Double Cropping Rice,Ministry of Agriculture,Nanchang 330045,China) |
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| Abstract: | The effects of potassium application rate on the yield and rice quality of two superhigh-yielding early rice varieties(Luliangyou 996 and Ganxin 20) were studied under field conditions.Applying potassium fertilizer could significantly increase the number of effective panicles,grains per panicle and grain yield,and could enhance the biomass,translocation amount of dry matter reserved in the stem and sheath,the difference between air temperature and flag leaf temperature at heading stage,and the bleeding-inte... |
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| Keywords: | Double-cropping early rice Potassium application rate Grain yield and its components Rice quality |
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