| 旱种水稻生育特性与产量形成的研究 |
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| 引用本文： | 杨建昌,王志琴,刘立军,郎有忠,朱庆森.旱种水稻生育特性与产量形成的研究[J].作物学报,2002,28(1):11-17. |
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| 作者姓名： | 杨建昌 王志琴 刘立军 郎有忠 朱庆森 |
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| 作者单位： | 扬州大学,农业部作物栽培与生理重点开放实验室,江苏扬州,225009 |
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| 基金项目： | 江苏省自然科学基金资助项目 (BK990 91) |
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| 摘 要： | 以杂交籼稻汕优63和粳稻镇稻88为材料, 研究了旱种(地膜覆盖栽培)水稻的生长发育与产量形成的特性. 与水种(常规栽培, 对照)相比, 旱种水稻在有效分蘖临界叶龄期前分蘖发生慢、叶面积指数小, 干物质积累少, 在拔节期则相反. 旱种水稻的各节间长度、分蘖成穗率、粒叶比颖花数/叶(cm2)]、灌浆中后期的叶片光合速率、成熟期干物
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| 关 键 词： | 水稻 旱种 生长发育 产量 |
| 收稿时间： | 2001-04-04 |
| 修稿时间： | 2001年4月4日 |
Growth and Development Characteristics and Yield Formation of Dry-cultivated Rice |
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| YANG Jian,Chang,WANG Zhi,Qin,LIU Li,Jun,LANG You,Zhong,ZHU Qing,Sen.Growth and Development Characteristics and Yield Formation of Dry-cultivated Rice[J].Acta Agronomica Sinica,2002,28(1):11-17. |
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| Authors: | YANG Jian Chang WANG Zhi Qin LIU Li Jun LANG You Zhong ZHU Qing Sen |
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| Abstract: | With the indica hybrid combination of Shanyou 63 and japonica cultivar of Zhendao 88 as materials, the characteristics of growth and development and yield formation of dry cultivated rice (plastic film mulching cultivation) were studied. Compared to moist cultivated rice (conventional cultivation), dry cultivated rice had slower tillering, smaller leaf area index and less accumulation of dry matter before the critical stage of productive tillers, and the results were reversed at the jointing. The length of each elongated internode, percentage of productive tillers, grain leaf ratio spikelets/leaf area (cm 2)], photosynthetic rate at mid and late grain filling stages, dry weight at maturity, and active grain filling period of dry cultivated rice were smaller or lower than those of moist cultivated rice, but the former was larger or higher than the later, in terms of the root dry weight at heading, root shoot ratio, root activities at the early grain filling stage, grain filling rate, transfer ratio of total assimilates and harvest index. Dry cultivated rice had fewer spikelets per panicle but more panicles per unit area than moist cultivated rice. There was no significant difference between the two cultivated methods in the percentage of ripened grains. The differences in grain weight and yield between dry and moist cultivated rice were significant for Zhendao 88 but not significant for Shanyou 63. The approaches to increasing the grain yield in dry cultivated rice were discussed. |
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| Keywords: | Rice Dry cultivation Growth and development Yield |
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