Reason: The organic nutrients produced by the leaves in the late growth stage of rice are retained in the vegetative parts, showing early love, leading to greed. Due to low temperature, cold damage and drought, it causes normal growth and development burden, reproductive growth is delayed, nutrients can not normally move to reproductive growth, photosynthesis intensity and light time are not enough, increase greed, excessive nitrogen fertilizer or late application, nutrition The late growth of the body is prosperous, and it is prone to greedy phenomenon; the planting density is too large, the ventilation and light transmission are poor, the stems and leaves are too luxuriant, and the phenomenon of greed is also prone to occur.
Prevention and control: reasonable irrigation, prevention of drought, reasonable close planting, appropriate application of nitrogen fertilizer in a timely manner, not too much, to prevent excessive growth, leading to greed.
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