The bud period is a period of vegetative growth and reproductive growth, but it is mainly based on vegetative growth. The appearance of high-yield cotton in the bud period is: the root system is deep and broadly absorbed, the internodes are compact and stable, the top buds are not depressed, and the buds are less sag.

First, fertilizer management

According to the principle of "adapting nitrogen, stabilizing phosphorus and increasing potassium", on the basis of applying the base fertilizer, water and fertilizer management is earlier than conventional cotton. Cotton fields with good soil fertility and normal growth are generally not suitable for topdressing in the early stage of buds, and should not be applied to nitrogen fertilizers; cotton fields with poor soil fertility and weak growth generally apply about 5 kg of urea per mu around mid-June, and can also be supplemented with a certain amount. Fine organic fertilizer. Fertilizers should be applied in deep trenches between rows.

The insect-resistant cotton bud period is dry, the soil moisture content is low, and it is easy to form small old seedlings to reduce production. However, if there is a lot of rain or too much water in this period, it will easily lead to prolonged growth. Therefore, when the bud period is long and dry, when the cotton plant grows weak, it can be lightly watered by the furrow and timely ploughed after watering.

Second, timely control

In general, cotton fields can be used in the middle and late June of the year to use 2ml of supplemental supplements or 0.5g of squash, and 10kg of water. For cotton fields with a long trend, you can use 4-5ml per acre or 1g. Spray 15kg with water. For cotton fields with serious growth and long-term growth of the main stems for more than 3cm for several days before flowering, it can be used for 8-10ml per acre or 2-3g for hydration, 40-50kg for water, and strictly prevent Spray too early, excess and concentration too high.

Third, pruning management

Cotton pruning should be early, small and clean. Early: Generally, when the young bud is seen in the first fruit branch, the nutrient shoot should be removed to save nutrients. Small: It will be beaten in the hour of nutrition, saving labor and easy. Net: The work of destroying the nutrient shoots should be fine, and should not be missed.

Fourth, cultivating soil

The bud cultivation can adjust the temperature and humidity, regulate the growth of cotton, and should be carried out according to the soil and cotton growth status. When cultivating in a drought, it can cut off the soil capillary, reduce water loss and play a role in ensuring moisture. After the rain and after watering, the soil can be ploughed in time to warm up. When the cotton plant has a long trend, deep cultivating can cut off some cotton roots and control cotton growth. Deep row cultivating between rows can be deepened to more than 10cm, 5-6cm on both sides of the cotton plant. At the same time, before the flowering, combined with cultivating and cultivating the soil, it can prevent the cotton plant from lodging in the middle and late stages, which is beneficial to the management and watering and drainage in the middle and late period. Can also effectively reduce cotton rotten bells.

V. Pest Control

The main pests and diseases in the bud period include second-generation cotton bollworm, blind mites, cotton leaf mites, cotton aphid, whitefly, blight, etc., and timely use of conventional drugs such as cyhalothrin, imidacloprid, avermectin, etc. Harm and reduce the loss of buds.