| 杂交中稻分蘖期干旱对产量的影响及其缓解技术研究 |
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| 引用本文： | 徐富贤,蒋鹏,张林,熊洪,周兴兵,朱永川,刘茂,郭晓艺.杂交中稻分蘖期干旱对产量的影响及其缓解技术研究[J].中国稻米,2017(6):57-59. |
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| 作者姓名： | 徐富贤 蒋鹏 张林 熊洪 周兴兵 朱永川 刘茂 郭晓艺 |
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| 作者单位： | 1. 四川省农业科学院水稻高粱研究所/农业部西南水稻生物学与遗传育种重点实验室, 四川泸州646000;国家水稻改良中心四川泸州分中心,四川泸州646100;2. 四川省农业科学院水稻高粱研究所/农业部西南水稻生物学与遗传育种重点实验室,四川泸州,646000 |
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| 基金项目： | 国家水稻产业体系(CARS-01-29)，粮食科技丰产工程(2011BAD16BO5-1) |
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| 摘 要： | 以杂交中籼迟熟组合宜香优300和川谷优642为材料,在海南陵水旱季大田条件下,研究了分蘖期干旱处理对中籼迟熟杂交稻产量的影响及其缓解技术。结果表明,干旱会造成水稻减产,主要原因是有效穗数和穗粒数显著降低;干旱期间平均田间持水量可作为预测产量损失度的依据;分蘖期干旱处理下,稻谷产量随着施氮量和移栽密度的增加而增加,适当提高本田施氮水平和移栽密度,可显著降低分蘖期干旱的产量损失度。
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| 关 键 词： | 杂交中稻 分蘖期 干旱 产量损失度 缓解技术 |
Effects of Drought in Tillering Stage on Yield of Hybrid Rice and Its Mitigation Techniques |
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| XU FuXian,JIANG Peng,ZHANG Lin,XIONG Hong,ZHOU Xingbing,ZHU YongChuan,LIU Mao,GUO XiaoYi.Effects of Drought in Tillering Stage on Yield of Hybrid Rice and Its Mitigation Techniques[J].China Rice,2017(6):57-59. |
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| Authors: | XU FuXian JIANG Peng ZHANG Lin XIONG Hong ZHOU Xingbing ZHU YongChuan LIU Mao GUO XiaoYi |
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| Abstract: | The effects of drought in tillering stage on yield and its mitigation techniques were studied in the field in dry-season condi-tions of Lingshui County of Hainan Province,the medium indica hybrid rice combination Yixiangyou 300 and Chuanguyou 642 as materials. The results showed that the effective panicles and spikelets per panicle were significantly reduced by drought in tillering stage, which were the main factors of yield lost. The average soil moisture content during the drought stage can be used as the basis for predicting the yield loss. The yield increased with the increase of nitrogen rate and transplanting density. The yield loss degree of drought in tillering stage could significantly reduce by appropriate nitrogen rate and transplanting density. |
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| Keywords: | hybrid rice tillering stage drought yield loss degree mitigation technique |
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