| 贵州省中低海拔山区水稻超高产生育特性研究 |
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| 引用本文： | 杨桂兰,黄姚英,杨昌元,程爱民.贵州省中低海拔山区水稻超高产生育特性研究[J].现代农业科技,2010(14):35-36,38. |
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| 作者姓名： | 杨桂兰 黄姚英 杨昌元 程爱民 |
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| 作者单位： | 黔东南州农科所,贵州,凯里,556000 |
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| 摘 要： | 选择具有超高产潜力的水稻品种,采用精确定量栽培,结果表明:在贵州中低海拔山区生态条件下,水稻超高产达12 t/hm2以上;晚熟品种黔南优2058(17.4叶),38 d达到最高苗,分蘖率为211.42%;移栽期、分蘖盛期、分蘖临界期、拔节期、抽穗期单株干物质重分别为0.55、8.90、24.40、46.90、60.20 g,拔节期、抽穗期叶面积指分别为9.01和8.70;单穗灌浆速度前期(抽穗后20 d)每天增重0.15 g/穗,后期(抽穗20 d以后)每天增重0.148 g/穗。中熟品种益农一号(15.2叶),栽后33 d达到最高苗,分蘖率为204.75%;移栽期、分蘖盛期、分蘖临界期、拔节期、抽穗期单株干物质重分别为0.64、12.80、22.10、49.00、55.40 g,拔节期、抽穗期叶面积指分别为9.66和8.70;单穗灌浆速度前期(抽穗后20 d)每天增重1.42 g/穗,后期(抽穗20 d以后)每天增重1.24 g/穗。
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| 关 键 词： | 中低海拔山区 水稻 超高产 生育特性 贵州省 |
Study on Breeding Characteristics of Ultra-high-yield Rice in Low Altitude Mountain Areas of Guizhou Province |
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| Authors: | YANG Gui-lan HUANG Yao-ying YANG Chang-yuan CHENG Ai-min |
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| Institution: | YANG Gui-lan HUANG Yao-ying YANG Chang-yuan CHENG Ai-min(Institute of Agrilcultural Sciences of Southeast of Guizhou,Kaili Guizhou 556000) |
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| Abstract: | The potential ultra-high-yield rice varieties were tested with cultivation techniques of accuarate and quantitative in medium-low altitude mountain areas ecological conditions in Guizhou.The ultra-high-yield rice varieties yield reached up to 12 t/hm2.Late maturing varieties Qiannanyou 2 058(17.4 leaves) reached up the maximum seedlings in 38 days,tillering rate of 211.42%;transplanting period,tillering stage,tillering critical,jointing stage,heading date single dry matter were 0.55,8.90,24.40,46.90 and 60.... |
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| Keywords: | low-altitude mountain areas rice ultra-high-yield breeding characteristics Guizhou Province |
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