| 免耕抛秧水稻的大穗优势及形成机理研究 |
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| 作者姓名： | 徐世宏 江立庚 |
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| 作者单位： | 广西自治区农业厅 广西南宁530022(徐世宏)，广西大学作物栽培学与耕作学重点实验室 广西南宁530005(江立庚) |
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| 基金项目： | 国家自然科学基金;科技部科研项目 |
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| 摘 要： | 在田间条件下,连续4年对免耕抛秧水稻的大穗优势及形成机理进行了研究。结果表明,与常耕抛秧水稻相比,免耕抛秧水稻的每穗总粒数更多,表现出明显的大穗优势。免耕抛秧水稻的分蘖位较低,后期积累干物质和养分的能力强,后期生理代谢旺盛、生理功能强,剑叶衰老慢,能充分保证籽粒生长等是免耕抛秧水稻大穗优势形成的内在生理原因。
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| 关 键 词： | 水稻 免耕抛秧 大穗优势 形成机理 |
Lengthy Panicle Superiority and Physiological Mechanism in No-tillage and Cast Transplanting Rice |
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| Authors: | Xu Shihong Jiang Ligeng |
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| Institution: | 1 Guangxi Agricultural Department;Nanning 530022; 2 Key Laboratory of Crop Cultivation and Farming System of Guangxi University;Nanning 530005 |
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| Abstract: | Lengthy panicle superiority and physiological mechanism were studied under field condition in continuous four years. Results showed that no-tillage and cast transplanting rice had lengthier panicle than conventional tillage and cast transplanting rice in the continuous four field experiments with no exception. The physiological mechanism were that no-tillage and cast transplanting rice produced tillers under lower nodes, accumulated more dry matter and nitrogen during late growth period, revealed obvious physiological metabolism superiority, and displayed slower flag leaf senescence during late growth period that would benefited grain filling. |
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| Keywords: | Rice No-tillage and cast transplanting Lengthy panicle Mechanism |
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