插秧水稻两种控蘖方法比较研究

Comparative Studies on Two Methods of Controlling Tiller

两年试验结果表明:大水淹蘖的效果优于落干烤田,但二者差异不显著。穗数型品种无论哪种控蘖方法,最佳处理时期为当田间茎数达到计划收获穗数的80％,持续10～12d;穗重型品种大水淹蘖的最佳处理时期为田间茎数达到计划收获穗数的80％,而落干烤田的最佳时期是当田间茎数达到计划收获穗数的100％时。两种处理方法均不影响出蘖速度,对水稻的生长发育也无不良影响。

The research results of two years showed that the effect of flooding tillers had advantages over air-drying paddy tillers, but the difference of two treatments is not significant. For panicles number varieties no matter which method is used the best treatment period is when the number of stem in the field amounts to 80 % of planned harvest number, and the duration of treatment is 10 - 12days. For panicles-weight varieties, the best treatment period of flooding tillers is when the number of stem in the field reaches 80 % of planned harvesting panicles, while the best treatment period of air-drying paddy tiller is when the number of stem reaches 100% of Planned panicle number. Both of the methods did not affect the tillering speed and the development of rice.