Prevention and treatment of cotton rotten peach

What about cotton rotten peach? The following five points of prevention and treatment may be helpful.

1, grab the rotten peach

After the emergence of rotten peaches and deadlocks in cotton, it is necessary to rush to pick up the spades, yellow peaches and open peaches, bring them back to the booth to dry in the ventilated place, and promote the rotten peaches to be cooked; in the case of sunny days, it can be exposed; in case of continuous rainy weather, Take a baking method, force it to burst, and then strip the cotton stalks, which can prevent the spread of pests and diseases, and can make the cotton husks rotten and not recover, and recover some of the losses.

2, dredge the ditch

It is necessary to clean the cotton field drainage ditch in time before the rain, and require the gutter to be unblocked to ensure that there is no water in the cotton field when the rain occurs, and the ditch is not blocked; after the rain, the clear water can be discharged quickly, effectively reducing the water table in the cotton field. .

3, pruning

In the late growth stage of cotton, pruning and threshing can not only reduce nutrient consumption and save nutrients, but also concentrate nutrients for peaches, and reduce the degree of shading in the field, which has obvious effects on controlling rotten peaches. In the later stage, the whole branch should be placed in a cotton field with a strong growth and a long and heavy road closure. It is necessary to seize the old, weak, diseased and yellow leaves in the lower part of the main stem, and open the "skylight" in time, that is, remove the main The leaves in the upper part of the stem are cut off in time to remove the leaf branches and empty fruit branches. The axillary buds should be followed by the buds, and the removed leaves and leaves are taken to the field for treatment. If necessary, the cotton bud leaves can also be removed.

4, push the plant to dry

From late August to late September, cotton plants with strong growth and heavy overlap of branches and leaves can be used to dry the plants. Select the sunny day to open the cotton line, so that the adjacent two rows of cotton plants are inclined in an "eight" shape, let the other side open, fully get the sun to reduce the humidity in the field, reduce the growth and reproduction of the bacteria. If there is a lot of rain, rotate every 5 to 7 days, first narrow the line, then widen the line, so that the plants can be aired alternately, which can effectively reduce the humidity in the field.

5, killing mites

Late borer pests in cotton (e.g., cotton bollworm, pink bollworm, diamond, etc.) eats the bolls on the wound, often easy to cause infection caused by bacteria rotten peach. Therefore, it is very important to grasp the insect pests in cotton fields.