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杂交稻制种高产群体与水稻大田生产有所不同,它的有效穗相对较少,穗粒数也相应减少。为了控制苗不过量,巩固有效穗,提高成穗率,增加穗粒数,建立合理的群体结构,制种田在分蘖阶段(主要指母本)及时凉脚、烤田是非常必要的,其主要机理和意义在于: 1.改善土壤环境,促进根系生长。亲本植株分蘖期,特别分蘖高峰后期,正处于
The high-yielding hybrid rice seed production group and rice field production are different, its effective spike is relatively small, grain number is also reduced accordingly. In order to control excessive seedlings, to consolidate the effective panicle, increase the rate of panicle, increase the number of grains per spike, establish a reasonable population structure, the system of farming at the tillering stage (mainly refers to the female parent) timely cool feet, baking is very necessary, the main Mechanism and significance are: 1. To improve the soil environment and promote root growth. The parent plant tillering stage, especially after the peak tillering, is at