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(四)出■结实期管理。稻穗在植体内经过充分发育之后,就开始出穗、开花受精,经过灌浆、乳熟、黄熟等阶段即达到成熟阶段.一般从出穗到成熟须经过30天左右。出穗和灌浆快慢与品种特性,天气及水肥管理条件有密切关系。出穗结实期稻茎达到最长度,叶片停止生长,颖花各器官已发育完成。这一阶段的生长中心由穗子生长转移到稻粒生长。这时期的天气条件和管理措施对粒重粒饱起决定性作用.因此,要继续做好
(D) out ■ sturdy management. After the panicle has been fully developed in the plant, it begins to spike, flowering and fertilizing, and reaches the maturity stage through grouting, milky ripening and ripening of yellow, etc. Generally, it takes about 30 days from the ear emergence to ripening. Spike and filling speed and variety characteristics, weather and water and fertilizer management conditions are closely related. At the heading stage, the rice stems reached the maximum length, the leaves stopped growing, and all organs of spikelets had been developed. The growth center at this stage is shifted from panicle growth to rice grain growth. The weather conditions and management measures during this period have a decisive effect on the grain weight. Therefore, we should continue to do well