| 不同肥水管理及改变源库比对水稻剑叶温度的影响 |
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| 引用本文： | 吴自明,赵伟,潘晓华.不同肥水管理及改变源库比对水稻剑叶温度的影响[J].江西农业大学学报,2012,34(2):203-207. |
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| 作者姓名： | 吴自明 赵伟 潘晓华 |
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| 作者单位： | 江西农业大学 农学院/作物生理生态与遗传育种教育部重点实验室,江西南昌,330045 |
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| 基金项目： | 国家“十二五”科技支撑计划项目 |
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| 摘 要： | 采用盆栽方法研究了生育后期不同水肥管理及改变源库比对双季水稻剑叶温度的影响.研究表明,保持抽穗后土壤湿润或一定的水层、生育后期施用定比例的氮钾肥及提高库源比,有利于降低剑叶温度、提高气叶温差；抽穗后双季早、晚稻剑叶的气叶温差与结实率呈正相关,相关系数分别为0.734和0.858.抽穗后科学的水肥管理及具有较高粒叶比的群体之所以能够高产,与其能够降低叶片温度有关.
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| 关 键 词： | 双季水稻 水肥管理 库源比 剑叶温度 气叶温差 |
The Effects of Different Fertilizer and Water Management and Alteration of Source-sink Ratio on Rice Flag Leaf Temperature |
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| WU Zi-ming
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ZHAO Wei
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PAN Xiao-hua.The Effects of Different Fertilizer and Water Management and Alteration of Source-sink Ratio on Rice Flag Leaf Temperature[J].Acta Agriculturae Universitis Jiangxiensis,2012,34(2):203-207. |
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| Authors: | WU Zi-ming ZHAO Wei PAN Xiao-hua |
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| Institution: | * (College of Agronomy,Jiangxi Agricultural University/Key Laboratory of Crop Physiology,Ecology and Genetic Breeding,Ministry of Education,Nanchang 330045,China) |
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| Abstract: | The effects of different irrigation,application of nitrogen and potassium and alteration of source/sink ratio on rice flag leaf temperature in the late growth stage by using the method of pot experiments were studied.The results showed that the humid irrigation,application of nitrogen and potassium and high sink/source ratio in the late growth stage could decrease flag leaf temperature(FLT) and increase flag leaf temperature depression(FTD,difference between leaf temperature and air temperature);the FTD of double-cropping early and late rice at the heading stage had a positive correlation with seed setting rate,and its correlation coefficient were 0.734 and 0.858 separately.The reasonable fertilizer-water management and higher grain/leaf ratio could increase yield of rice,attribute to decreasing leaf temperature. |
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| Keywords: | double-cropping rice fertilizer and water management source/sink ratio FLT FTD |
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