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在协优系列杂交水稻制种生产中，如果中后期肥水管理不当，协青早Ａ的倒２、倒３节上的休眠芽在抽穗前后就可能萌发生长成茎秆分枝。这些茎秆分枝有二三个节间，二三张叶片，７０～８５粒颖花，但不能正常抽穗结实，并对制种产生不利影响。现以协优６３制种为例，将其对杂交水
In the Xieyou series of hybrid rice seed production, if the late fertilizer and water management is not properly, Xieqingzao A down 2, down 3 on the dormant buds before and after heading may grow into stems branches. These stems have two or three internodes, twenty-three leaves, and 70-85 spikelets, but they can not be erectly robust and have adverse effects on seed production. Seeds are now 63 to produce excellent hybridization of water