摘要
为预防高温天气对超级稻的影响,通过灌水深度和灌水时期试验,研究了超级稻产量和结实率对不同灌水深度和不同灌水时期的响应及原因。结果表明:不同灌水深度处理产量及结实率存在显著差异,灌水能提高产量和结实率,灌深水的效果比灌浅水好。不同灌水时期处理,灌水提高产量和结实率的幅度不同,效果最好的是在幼穗分化五期￣齐穗。不同灌水处理影响产量和结实率的原因是灌水能降低田间温度、减少日平均温度≥30℃或最高温度≥35℃天数以及灌水时超级稻发育对温度敏感程度不同。
In order to prevent the influence of high temperature weather on the super-rice, the authors carried out the water-filling tests of different depths and different periods, investigated the response of the super-rice to the different water depths and filling periods and its influence to the productivity and ripeness rate, and analyzed its causes. The result showed： under the different water depths, the productivity and ripeness rate was much different; that is, filling water could increase the productivity and ripeness rate, and deeper water had a better result. Under the different filling periods, the productivity and ripeness rate increased in different range; the best period was from the fifth period of the young ears of rice to the full ears. The causes of the influence on the productivity and ripeness rate under different water depths and filling periods are that water filled can reduce the temperature of the field, decreasing the days when the average daily temperature higher than 30°C or the days with the highest temperature over 35°C; The sensitivity of the growth of the super-flee to the temperature is different when filling water.
出处
《中国农学通报》
CSCD
2006年第5期182-185,共4页
Chinese Agricultural Science Bulletin
基金
湖南省重点科技项目"预防水稻大面积空壳减产综合技术体系研究"(编号:ZY3030)。
关键词
超级稻
灌水
高温
响应
原因
The super-flee, Water-filling, High temperature weather, Response, Cause
