Technical points of cotton post-management management

First, strengthen the field management First, the cotton field with lush foliage, can remove the old leaves and empty branches of the main stem. The second is to erase the axillary buds in time. The third is to hit the group, generally knocking out the group points of the lower, middle and upper fruit branches.

Second, prevent premature aging

Late management should be based on premature aging, mainly through foliar spray fertilizer to meet the nutrient needs of cotton (19870, 5.00, 0.03%). A multi-element fertilizer mixture of 1.2% urea + 0.3% potassium dihydrogen phosphate + 0.2% zinc sulfate + 0.1% - 0.2% boric acid should be sprayed. Spray once every 7-10 days.

Third, artificial chemical ripening

At the end of September and the beginning of October, choose sunny days, use 40% of ethephon 150-200 ml per acre, and promote precocity with 50 kg of water.

Fourth, timely harvest

The cracking and bolling is best picked up in about 7 days. The peach that is not completely cracked and matured is not harvested, and the dew on the cotton wool is not harvested.

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