Cotton: timely topping, pruning

After the autumn, the sunshine is sufficient, as long as the cotton does not lack fertilizer and water, and does not prematurely decay, you can sit on the autumn peach.

Flexible regulation and improvement of photosynthetic efficiency Foliar fertilization should be flexibly controlled according to the growth trend. For the weak cotton, the nitrogen is mainly used, combined with the application of phosphorus and potassium fertilizer; the growth is generally combined with NPK; the growth is dominated by phosphorus and potassium fertilizer, combined with chemical control, plus permethine plus 3 ~3.5 grams of water spray. Trace element foliar fertilizers are suitable for all types of cotton fields, especially those that are weaker.

Timely topping, pruning cotton into the bud period should be properly removed from the first two layers of fruit branches on 4-5 early buds, promote cotton early high-yield frame, concentrate on peach; remove the top heart before the fall, effectively inhibit ineffective growth, improve ventilation Light conditions. After the topping, the axillary buds are wiped out in time to promote the conversion of nutrients to reproductive growth, so as to achieve the purpose of increasing the weight of the bells. Remove the inactive old leaves at the bottom of the cotton, take the waste branches and leaves that are covered with pests out of the cotton field, and dig deep into the pit to reduce the number of pests in the cotton field.

Timely prevention and control of pests and diseases on the four generations of cotton bollworm and beet armyworm, to achieve control indicators immediately sprayed insecticides to eliminate or manually capture. For Fusarium wilt and Verticillium wilt strain, spray with trichloroisocyanuric acid bactericide and combine with root irrigation. For red leaf stem blight, the main potassium fertilizer, foliar spray potassium dihydrogen phosphate.

Strengthen the late weeding and weeding to cut off the empty fruit branches, remove the big grass, and remove the invalid small flower buds.

The best way to prevent rotten bells in the rainy days is to push the branches and ridges. The small lines become big lines. The combination of hands and feet is good for ventilation and light transmission. Early removal of black yellow peaches can increase the cotton income.

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