| 两系杂交稻两优培九穗增重特性及与气象条件的关系 |
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| 引用本文： | 吕川根,胡凝,相国根,姚克敏.两系杂交稻两优培九穗增重特性及与气象条件的关系[J].江苏农业学报,2009,25(3). |
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| 作者姓名： | 吕川根 胡凝 相国根 姚克敏 |
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| 作者单位： | 1. 江苏省农业科学院粮食作物研究所,江苏南京,210014
2. 南京信息工程大学应用气象学院,江苏南京,210044 |
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| 基金项目： | 国家"863"计划项目 |
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| 摘 要： | 在南京分期播种分析了两系法杂交籼稻两优培九的穗增重特性及与气象条件的关系.两优培九的穗终极质量为 5.17～5.64 g,为重穗型杂交稻;4月30日和5月10日播种,穗增重速率由快变慢出现的时间较迟,穗重的快速增加期长达19.1～25.5 d,比其他播期长8.3～10.6 d.穗增重需要的总天数与生长期平均温度显著正相关,穗生长期平均温度低,则总生长时间缩短.穗重周增量与平均温度及最低温度显著正相关,而与温度日较差呈显著负相关.以4月30日至5月10日播种对两优培九穗重较有利,穗增重速率下降时间较迟,能保持较长的活跃增重期,最终能达到较高的穗重.对于迟播的两优培九,在栽培管理上尤其要注意延迟后期的生理衰老,以延长活跃增重期.
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| 关 键 词： | 两系法杂交稻 两优培九 生长 Richards生长分析 气象因子 |
Panicle Weight Gain and Its Relation to Climate Condition for A Two-line Hybrid Rice,Liangyoupeijiu |
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| LV Chuan-gen,HU Ning,XIANG Guo-gen,YAO Ke-min.Panicle Weight Gain and Its Relation to Climate Condition for A Two-line Hybrid Rice,Liangyoupeijiu[J].Jiangsu Journal of Agricultural Sciences,2009,25(3). |
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| Authors: | LV Chuan-gen HU Ning XIANG Guo-gen YAO Ke-min |
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| Institution: | 1.Institute of Food Crops;Jiangsu Academy of Agricultural Sciences;Nanjing 210014;China;2.College of Applied Meteorology;Nanjing University of Information Science and Technology;Nanjing 210044;China |
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| Abstract: | Panicle weight gain and its relation to climate condition were studied using Richards growth equation by different sowing dates with a two-line hybrid,Liangyoupeijiu in Nanjing.Sowed at April 30 and May 10,the final panicle weights were 5.17-5.64 g,showing big panicle of Liangyoupeijiu.And the date of second inflexion of Richards growth equation,which showed growing speed from rapidness to slow-down,was later,and the active growing days showed 8.3-10.6 d longer than those sowed at other three showing dates.... |
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| Keywords: | two-line hybrid rice Liangyoupeijiu growth Richards equation climatic factor |
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