| 土壤水分胁迫对水稻产量和品质的影响 |
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| 引用本文： | 王成瑷,王伯伦,张文香,赵磊,赵秀哲,高连文.土壤水分胁迫对水稻产量和品质的影响[J].作物学报,2006,32(1):131-137. |
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| 作者姓名： | 王成瑷 王伯伦 张文香 赵磊 赵秀哲 高连文 |
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| 作者单位： | 沈阳农业大学，辽宁沈阳 110161 |
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| 摘 要： | 以农大3号为试材，盆栽，控水，研究了不同生育阶段土壤水分（水势）胁迫（≤－75 kPa）对水稻产量和品质的影响。结果表明，孕穗中期土壤水分胁迫导致功能叶变短，穗粒数减少，生物产量与经济产量降低，糙米率、米粒长宽比、食味下降。分蘖期干旱胁迫使单穴有效穗数降低，生物产量与经济产量下降。出穗后干旱胁迫导致叶片萎蔫变黄，叶面积指数下降。乳熟期和灌浆期干旱胁迫，饱满粒率、饱满千粒重降低，整精米率下降。灌浆期干旱还导致垩白率、垩白度明显增高。蜡熟期干旱使叶绿素含量减少，胶稠度、蛋白质含量降低。
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| 关 键 词： | 水稻 土壤水分 产量 稻米品质 |
| 收稿时间： | 2004-05-24 |
| 修稿时间： | 2005-01-10 |
Effects of Water Stress of Soil on Rice Yield and Quality |
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| WANG Cheng-Ai,WANG Bo-Lun,ZHANG Wen-Xiang,ZHAO Lei,ZHAO Xiu-Zhe,GAO Lian-Wen.Effects of Water Stress of Soil on Rice Yield and Quality[J].Acta Agronomica Sinica,2006,32(1):131-137. |
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| Authors: | WANG Cheng-Ai WANG Bo-Lun ZHANG Wen-Xiang ZHAO Lei ZHAO Xiu-Zhe GAO Lian-Wen |
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| Affiliation: | Shenyang Agricultural University, Shenyang 110161,Liaoning |
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| Abstract: | Using Nongda 3 as a material,the effects of soil water stress(soil water potential) on the development,grain yield and quality of rice plants through pot experiment by manual rigorously controlling soil potential with tensionmeter were studied.The results indicated that the yield and quality were affected in different degree when the soil water potential(SWP) reduced to-75 kPa during the different growth periods.The lengths of three leaves from the top,grain number per panicle,biomass and grain yield of the plant,rate of brown rice,length/width of the kernel,and taste for eating decreased by water stress at middle booting stage.The panicle number,biomass and grain yield of the plant reduced by soil water stress at the beginning of tillering period.The leaf turned to shrink and yellow,and leaf area index declined because of soil water stress after heading.Meanwhile,the percentage of ripened grain,1 000-grain weight and head rice rate decreased by soil water stress at the milk and filling stages.The percentage of chalky grain and chalkiness increased at the filling stage,and the chlorophyll content,gel consistency and protein content were declined at the wax period. |
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| Keywords: | Rice Soil water potential Yield Rice quality |
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