中国水稻科学

中国水稻科学

• 研究报告 • 上一篇    下一篇

搁田始期对水稻成穗率、产量形成和群体质量的影响

苏祖芳 1;周兴安 1;张亚洁 1;李国生 1;姚志发 2;沈富荣 3;姚友权 4   

  1. 1 扬州大学农学院农学系，扬州225009； 2 江苏省宜兴市农业局，宜兴214200； 3 江苏省金湖县农业局，金湖211600； 4 江苏省盐城市郊区农业局，盐城224001
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1996-04-10 发布日期:1996-04-10

Effect of the Beginning Period of Draining Paddy Field on the Percentage of Effective Tillers, Yield Formation and Population Quality in Rice

Su Zufang; Zhou Xing'an; Zhang Yajie; Li Guosheng; Yao Zhifa; Shen Furong; Yao Youquan   

  • Received:1900-01-01 Revised:1900-01-01 Online:1996-04-10 Published:1996-04-10

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摘要： 1992年至1994年在江苏省扬州、宜兴、金湖、盐城郊区进行试验，结果表明：1)适当提早搁田有利于稳定穗数提高成穗率，改善群体质量，增加有效叶面积率，增加每穗总粒数，提高抽穗期的单茎茎鞘重和抽穗至成熟期的干物质重量。2)在基蘖肥用量占总施氮量60%时，总茎蘖苗数达预期穗数80%时搁田，能显著提高成穗率和群体质量。在N叶期搁田，并持续1个叶龄期，对N叶内的分蘖芽长度有抑制作用，茎蘖生长呈迟缓状态

关键词: 分蘖芽, 成穗率, 穗粒结构, 搁田始期

Abstract: Experiments were carried out in several sites in Jiangsu Province in 3 years. Results are as follows:1) Draining paddy field in advance properly is beneficial to obtaining stable panicle number, raising percentage of effective tillers and improving population quality, increasing ratios of effective leaf area and total grain numbers per panicle, raising single stem and sheath weight at heading stage and the dry matter weight accumulate from heading to maturing. 2) Under the experiment of the numbers of tillers is about 80% of expected panicle numbers and base tillering fertilizer applied 60% of total, draining paddy field would significantly increase the percentage of effective tillers and population quality. It was clearly shown that draining paddy field at N leaf-age and keeping one leaf-age long would prohibit the length of the tiller bud in N leaf axil, and could make it grow slowly.

Key words: draining paddy field, percentage of effective tillers, structure of panicle and grain, till bud