How to top cotton?
How to top cotton? How to ask for advice Cotton topping can control the growth of cotton main stem and avoid the appearance of invalid fruit branches. Topping suitable period is generally from early flowering to full flowering, and the specific time should be determined according to soil fertility, planting density, local optimal flowering and boll setting period and cotton plant growth. Those with lower soil fertility, higher density and fewer fruit branches should be planted early; those with higher soil fertility, lower density and more fruit branches should be planted late. Topping should master the principle of "time to different branches, branches to different times". Topping too early can not make full use of the growing season, and will cause excessive buds; too late will have no effect, consume a lot of nutrients, and reduce the boll weight in the later period. Topping method is generally to remove the cotton plant stem tip a leaf heart. Click to get mass cotton planting technology Click to get mass grain and oil crop planting technology
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What should be paid attention to in the control of rice diseases and insect pests?
What should be paid attention to in the control of rice diseases and insect pests? The object of prevention and control should take corresponding pesticide control according to the different kinds of diseases and insect pests in the field. When pesticides are mixed, the content of pesticides should be made clear, especially for the control of neck blast. There are two dosage forms of tricyclazole, which should not be mistaken. Don't increase it at will.
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How can cotton yield increase and disease resistance?
How can cotton yield increase and disease resistance? What's the trick? Through the investigation in some cotton areas, it is found that the cotton farmers who apply nitrogen, phosphorus and potassium compound fertilizer only account for about 45%. Most farmers use ammonium bicarbonate, urea and calcium superphosphate, of which about 15% only use phosphate fertilizer as base fertilizer.
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