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根据高产群体所需要的条件，在生产中及时控制某些部分，而促进另一部分器官的生长，使群体在数量上和质量上达到统一。１高产水稻所需要的群体质量条件寒地水稻高产稳产必须有一个良好的群体质量，即在每６６７m２适宜的穗数（３０～３２万）要求下，总颖花量达到２３５０万／
According to the conditions required by the high-yielding population, some parts should be controlled timely in production, and the growth of the other part of the organs should be promoted so that the quantity and quality of the population can be unified. A group of high-yielding rice needs mass quality conditions High-yielding winter rice must have a good population quality, that is, the appropriate number of spikes per 667m2 (30 ~ 320,000) requirements, the total amount of spike 23.5 million /