Cotton Planting Knowledge (Four) Cotton Watering Technology

< p > 1. Before watering and topdressing, water must be fertilized in the middle of the big row, not in the small rows, and in the small rows for the long term, the roots are the weakest.

Many a href= "http://www.91se91.com/news/" > cotton growers < /a > used to put fertilizer on the cotton plant nearby. In fact, the cotton roots at this time have reached l meters and up to half a meter. Absorbing fertilizer mainly relies on new rooting, putting fertilizer in the middle of the big row, the cotton plants on both sides can be used, as far as possible, deep application, depending on the situation of soil, 10~15 kg of urea is applied to the mu, and 10~15 kg of potash fertilizer is applied to the base fertilizer without potash fertilizer.

Do not water and then topdressing. At least five or six days later, the rain will be even later.

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< p > two, before watering, remove useless leaves to reduce the waste of water and nutrients.

At this time, the minimum temperature at night has been stabilized at more than 20 C. The membrane should be removed, and shallow internal tillage should be carried out to promote root development.

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< p > three. Before spraying, the cotton field before spraying will be sprayed and shortened before watering. The chemical control has to be controlled second times according to the soil fertility and the growth of the cotton plant, so that the cotton will grow longer after watering and topdressing. As the temperature rises, the "water and fertilizer heat meet" will make the cotton grow strong, especially when it rains. If it is poured again, it will easily cause passivity, especially the strong and dense land.

The dosage of mu can be between 0.5 and 1.5 grams. This chemical control has great influence on the final < a href= "http://www.91se91.com/news/index_c.asp" > cotton plant height < /a > because half a month after watering is the time for the development of seventh, eighth fruit branches to eleventh, twelfth fruit branches.

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< p > four, watering should be evenly watered, or furrow, or ditching, or back, or alternate irrigation, avoid flooding irrigation, resulting in uneven water at high depressions.

Water must be prepared for rain after pouring.

If the water condition is good, try to use the water sooner or later. From 10 a.m. to 4 p.m., the surface temperature is too high and the water temperature difference is too large. Try to avoid this time.

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< p > five, after planting in June till the beginning of July, no matter whether the cotton fields are strong or weak or dense, no ridge can be closed. Once the premature closure is controlled by chemical control.

After watering, timely cultivation, loose soil and water storage.

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< p > six, after drought emergency measures < a href= "http://www.91se91.com" > cotton < /a > drought, not immediately watering, so as not to cause a large number of young buds to fall off, spraying 1% of urea solution, spraying 25 kg of fertilizer per mu, spraying the leaves on both sides, spraying at 8 pm and 5 p.m. to minimize the evaporation of fertilizer, which can effectively alleviate the drought level, so that the cotton will not overdry, waiting for watering or rain.

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