How to prevent and control rotten cotton and peach

1. Dredge the ditch before and after the rain, timely clean the cotton field drainage ditch, require the ditch to be smooth, ensure that there is no stagnant water in the cotton field when it rains, the ditch can quickly discharge open water after rain, and effectively reduce the underground water level in the cotton field. two。 Pruning and leafing in the late growth stage of cotton can not only reduce nutrient consumption and save nutrients, but also reduce the degree of shade in the field, which has an obvious effect on the control of rotten peach. In the later stage, the emphasis should be placed on the cotton fields where the growth is fierce and the closure is early and heavy. it is necessary to seize the time to get rid of the old, weak, sick and yellow leaves in the lower part of the main stem, and open the "skylight" at the right time, that is, to remove the upper leaves of the main stem, cut off the leaf branches and empty fruit branches in time, beat the axillary buds as soon as possible, and take the removed branches and leaves out of the field for treatment, and if necessary, you can also remove cotton peach bracts. 3. Pushing plants for drying from late August to late September can be carried out in cotton fields with exuberant growth and heavy overlap of branches and leaves. Choose a sunny day to push open the cotton row, so that the adjacent two rows of cotton plants are tilted in the shape of "eight", so that the other side is open, and the sun is fully exposed, so as to reduce the humidity in the field and reduce the breeding and reproduction of germs. If Rain Water is more, rotate every 5-7 days, first dry narrow row, then dry wide row, so alternately push plants to dry line, can effectively reduce the humidity in the field. 4. Killing cotton borer in the middle and later stage of cotton (such as cotton bollworm, red bollworm, diamond, etc.), the wound of eating on cotton peach is often easy to cause bacterial infection and lead to rotten peach. Therefore, it is very important to control pests in cotton fields. 5. After the rotting peach cotton appears rotten peach and stiff peach, it is necessary to rush to pick spades, yellow peaches and open peaches, bring them back to the stall and hang them in a ventilated place, so that rotten peaches can be exposed on sunny days if they encounter continuous rainy weather, baking methods can be taken to force them to burst, and then peel off the cotton petals, which can not only prevent the spread of diseases and insect pests, but also make the rotten shell of cotton peaches not rotten flowers, and recover some of the losses.