| 不同穗型水稻产量形成及物质生产分析 |
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| 作者姓名： | 秦志列 王 术 王伯伦 |
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| 作者单位： | 北京市农林科学院杂交小麦工程技术研究中心 北京100089(秦志列)，沈阳农业大学农学院 辽宁沈阳110161(王术，王伯伦) |
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| 摘 要： | 以穗倾角为分类依据,研究了不同穗型水稻群体产量形成和干物质生产特点。结果表明,直立穗型、半弯曲穗型、弯曲穗型品种平均产量依次降低,成粒率和千粒重较高是直立穗型高产的主要原因;弯曲穗型品种抽穗期干物重和表观输出率较高,直立穗型品种较低;直立穗型品种抽穗后干物重和成熟期干物重明显高于另二种穗型,抽穗后干物重占成熟期干物重和产量的百分比也较高;直立穗型品种上三叶短而宽、上中部叶片直立而下部叶片较平展,半弯曲穗型品种上三叶长而窄、叶片较平展,弯曲穗型品种上三叶长而宽、上部叶片平展而中下部叶片较直立;抽穗后直立穗型品种群体中下部透光性能好、叶面积和叶绿素含量下降较慢、丙二醛含量上升较慢;直立穗型和半弯曲穗型品种抽穗后单个颖花拥有的干物质越多,成粒率越高。
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| 关 键 词： | 水稻 产量形成 物质生产 叶片性状 粒叶比 |
Analysis on Yield Formation and Dry Matter Production in Rice Population
with Different Type of Panicles |
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| Authors: | Qin Zhilie Wang Shu Wang Bailun |
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| Institution: | 1 Hybrid Wheat Engineering And Technique Research Center, Beijing academy of agriculture and forestry sciences, Beijing 100089; 2 Shengyang Agricultural University, Shengyang 110161 |
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| Abstract: | The yield formation and dry matter production of different rice population were studied and compared. The results showed that the yield of varieties with erect panicles was higher than that of varieties with semi-cured and cured panicles as a result of higher setting rate and 1000-grain weight. The varieties with cured panicles had higher dry matter accumulated and rate of dry matter translocated at heading stage. The dry matter accumulated after heading and the biomass of mature stage of varieties with erect panicles were higher than that of varieties with semi-cured and cured. The top-three leaves of varieties with erect panicles were longer and wider and had smaller angle of panicle-neck. The more the weight of dry matter per spikelet had, the higher the percentage of ripened grains was. It was important that the plant population had large leaf area for the grain yield and dry matter production. |
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| Keywords: | Rice Yield formation Dry matter production Leaf character Grain leaf ratio |
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