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水稻最后3片叶的判断,在生产上具有十分重要的意义.一是正确推断幼穗分化进度.如倒3叶刚露尖为幼穗分化1期初,倒3叶全展倒2叶露尖时为幼分化3期中,倒2叶全展剑叶露尖时为幼穗分化5初.二是为肥水管理提供依据.倒3叶露尖为幼穗分化1期初,是追施促花肥的适宜时期,可看苗施好促花肥;剑叶露尖时为幼穗分化5期初,是保花肥的施用适期,可看苗巧施保花肥.三是预测抽穗期和成熟期,为后作安排带来主动性.一般水稻倒3叶露尖
The judgment of the last three leaves of rice is of great significance in the production.One is to correctly infer the progress of young spike differentiation.For example, In the third stage of differentiation, the second leaf showed the spikelet differentiation at the beginning of the second stage, which provided the basis for fertilizer and water management. , Can see Miao Shi good flower fertilizer; when the tip of the flag leaf tip spike differentiation 5 beginning, is the application of fertilizer security period, you can see Miao Qiao Shi Bao flower fertilizer. The third is to predict the heading and maturity for the after-arrangement Bring the initiative