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| 水稻返青后抗旱能力研究初报 | |
| 引用本文： | 马金虎,冯卫东,韦艳,兰保国,张云萍,张仲军.水稻返青后抗旱能力研究初报[J].农业科学研究,2006,27(2):6-8. |
| 作者姓名： | 马金虎 冯卫东 韦艳 兰保国 张云萍 张仲军 |
| 作者单位： | 1. 宁夏农业技术推广总站,宁夏,银川,750001 2. 灵武市农业技术推广中心,宁夏,灵武,750401 3. 宁夏职业技术学院,宁夏,银川,750002 |
| 摘 要： | 通过对水稻返青后穴苗数和灌水间隔时间的试验研究表明,返青后随着灌水时间的推迟产量呈递减趋势,穴苗数增加带来的增产效应不及返青后缺水对水稻造成的减产效应.返青后随着灌水时间的推迟,分蘖始期、分蘖盛期有所推迟,且影响较大,但对有效分蘖终止期影响较小,进而有效分蘖期缩短,分蘖数减少,每0.0667 hm2收获穗数和穗结实粒数减少,直接影响水稻产量.在缺水条件下,尽可能提前返青后的灌水时间,并在稀植技术范围内适当增加插植苗数,可减少一定的产量损失. |
| 关 键 词： | 水稻 返青 穴苗数 灌水 产量 |
| 文章编号： | 1673-0747(2006)02-0006-03 |
| 收稿时间： | 2006-02-23 |
| 修稿时间： | 2006年2月23日 |
Study on drought resistance ability of rice after its green up |
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| Ma Jinhu,Feng Weidong,Wei Yan,Lan Baoguo,Zhang Yunping,Zhang Zhongjun.Study on drought resistance ability of rice after its green up[J].Journal of Agricultural Sciences,2006,27(2):6-8. | |
| Authors: | Ma Jinhu Feng Weidong Wei Yan Lan Baoguo Zhang Yunping Zhang Zhongjun |
| Institution: | 1. Agricultural Technique Generalizing Station in Ningxia, Yinchuan 750001,China; 2. Agricultural Technique Generalizing Center in Lingwu, Lingwu 750401,China; 3. Ningxia Vactional Technical College, Yinchuan 750002, China |
| Abstract: | The relationship between the number of rice seedlings per planting spot after the green up,the irrigation date and the rice yields was analyzed.The result showed that the rice yields decreased as the irrigation date was delayed after the rice green up.The increased rice yield benefit by increasing the number of rice seedlings per planting spot could not compensate for the reduced benefit of yield by irrigation during a water shortage.The beginning and the middle period of tilling of rice was delayed with the irrigation date delaying the rice's green up time.But there was no significant effect on the end date of the effective tilling that made the date shorten and the number of rice tillering were reduced,and rice spikes per unit of area and the grain number per spike were reduced which all influence the rice yield.So under the water shortage condition,irrigating after rice green up and increasing the planting density would reduce the yield loss. |
| Keywords: | rice green up seedling quantity per planting spot irrigation yield |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |