Loose drought can easily lead to the fall of Leiling old age and premature aging of cotton plants. Therefore, early irrigation and drought relief during this period is a key measure for high cotton yield. Drought resistance depends on days, places, and seedlings. Sand has poor water retention, and it should be irrigated for seven consecutive days without rain, and the loam should be watered for ten days of drought. The 3-4 leaves of the top of the cotton plant showed wilting at noon, and the leaves became thick and dark green and dull. Until 3-4 pm, they were still unable to return to normal. Gully irrigation is best carried out in the morning and evening. In areas where rainstorms have occurred and waterlogging has occurred, it is necessary to do a job of draining stains in the trenches after the rain.
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