Bud stage is the key period for cotton production on the shelf, and the demand for water and nutrients is not only gradually increasing, but also sensitive to the reaction. At the same time, there are also many other factors that restrict the normal development of buds. Now it is based on the prone problems and management of high yield cotton fields. Countermeasures are as follows:

The main problems of budding cotton

The first is that the plastic film cotton is easy to bud prematurely, and the open field cotton and intercropping cotton fields are interplanted, and the late-casting cotton field is easy to bud late;

Second, the low-fertility cotton fields are mainly unable to afford high-yield shelves, and high-fertility cotton fields are prone to prosper;

Thirdly, some buds cannot stand still after budding, resulting in the phenomenon of “public cotton”. The so-called “public cotton” refers to the branch-shaped unproductive branches produced when the cotton enters budding stage. All of them are leaf branches. , The performance of dark green leaves, leaf hypertrophy, red shoots on the branches, and some although the formation of fruit branches, but after the emergence of buds off, can not flower bell, form crazy growth. The cause of the “public cotton” phenomenon is caused by external conditions, such as excessive nitrogen fertilizer, high density, malnutrition of water and fertilizer, late planting, too small temperature difference between day and night, and damage caused by blind stink bugs.

The main management measures of bud period

The main direction of cotton budding management is to grow steadily. Therefore, the management of cotton fields with weak growth is mainly based on the promotion of high-yield and high-yield shelves, while the management of high-yield cotton fields with good conditions for water and fertilizer is to prevent growth and achieve stable growth. The main measures of management are:

Stable fertilizer

Although the amount of fertilizer required during the bud period is significantly higher than that at the seedling stage, since the cotton is sensitive to fertilizer and water at this time, the budding period fertilizer must satisfy the needs of hair buds and buds, and it must be prevented from causing excessive growth. To stabilize the application, the so-called stable application, first, to be supplemented by organic fertilizer-based fertilizers, in the organic fertilizer mixed with NPK fertilizer or compound fertilizer applied. The second is to adapt measures to local conditions and have a high level of soil fertility. Base fertilizer and seedling fertilizer should be given less or no nitrogen fertilizer. However, nitrogen fertilizers should be applied less or less to fertility in the base fertilizers. , build a good production shelf. And pay attention to fat fertilizer to late planting, less facilities, can be postponed to the late stage of the chase; weak ground to early application, and more facilities, can be early in the bud to chase early. Fertilizing amount at the bud stage: The north generally applies 3-5 kg ​​of urea per acre, and the combined use of phosphorus and potassium, which is insufficient for phosphorus and potassium, is applied together.

During budding period, pay attention to deeper application. For cotton fields with irregular growth, apply to small and weak trees.

Clever pouring water

After the budding period of cotton, the temperature rises, the growth speeds up, and the consumption of water increases. The northern cotton region is in a dry season. Pouring good buds according to local conditions is an important measure to capture cotton production. The general bud period is full of lyrics and should not be watered to prevent leggy. However, when the drought is severe, when field water capacity falls below 55%, the growth of cotton plants slows, the dark green color of the leaves darkens, and the ability of the roof to rotate with the sun decreases. The ratio of red stems exceeds two-thirds and the second slice. When the parietal leaves linger at noon and they are still unable to recover by 3-4 pm, water immediately. During the bud period, except for saline and alkaline land, it is forbidden to flood the area with flood irrigation.

Uncovering film and cultivating earth. The mulch cotton and cotton have gradually disappeared from the warming effect of the mulching film in the bud stage. The timely removal of the film will benefit the root system and prevent premature senescence. The uncovering time should be carried out after the cotton enters the bud, which will affect the growth and development of the ground prematurely, and affect the underground too soon. Root growth. Bud stage is an important period for the development of cotton roots. Deep cultivating can promote root barrowing, enhance the absorptive capacity of cotton plants, and have the ability to resist drought and lodging. This has the effect of restraining the leggy cotton field, and ensuring that cotton grows steadily. The cultivator can reach a depth of more than 10 cm during the budding period. However, by the late budding stage, due to the gradual decline of the root system and the weakening of the ability to divide, it is not appropriate to deep cultivator in order to prevent root damage. In the bud stage, the soil is combined with the cultivator to cultivate the soil. The cultivation of soil not only facilitates drainage and irrigation, prevents lodging, and suppresses the growth of weeds, but also reduces the humidity in the field and reduces the number of rotten bells. Earthing should be carried out in several stages so as not to damage the roots too much.

Go to early buds. Early budding cotton fields (before June 5th) should be taken for early buds, all buds that were present before June 5 should be removed, or all visible fruit branches before June 5 should be removed.

Pruning. Bud pruning is mainly to the leaves, cotton pruning methods have conventional pruning, simplify pruning and pruning points, leave the leaves to stay, should be applied according to local conditions, in order to give full play to its cost reduction and efficiency.

Chemical control. The budding period should be controlled during the bud period, that is, when the cotton plant grows until it can see the fourth fruit branch. At this time, the chemical control can make the upper and lower sections shorter and thicker, and it is beneficial to promote control and prevent prosperous growth. , more buds, anti-shedding. In general, 0.3-0.8 g is used for the reduction of mu. The specific control is: normal growth of cotton, lighter control of the main type of plant to be adjusted, and long-term growth of cotton. Drought and light rain should be lightly controlled; rainy days should be heavy.

Bud disease control. The disease in the bud stage is mainly yellow-wilting disease, and the principles of agricultural measures and prevention, supplemented by chemical agents should be adhered to. Insect pests mainly include blind stink bugs, cotton bollworms, cotton aphids, and red spiders. They should be checked in time to ensure good monitoring and timely prevention and treatment.

Kegel Ball

Spice Novelties Co.,Limited , https://www.wholesale-adult-toys.cn