The main points of the latest course of cotton pruning techniques and methods

Cotton is a very important economic crop in China, and the planting area in our country is very large. And with the increase of market demand, its planting area is still expanding. Cotton is also a crop with strong growth ability and many branches. Therefore, we should do a good job in pruning when planting in order to ensure the normal growth of cotton. So the editor brings you the technical points of cotton pruning today, let's take a look at it!

1. Pruning at bud stage

After the cotton growth enters the bud stage, the main growth direction is nutrition, and the pruning work at this time is mainly to remove branches and leaves. It usually begins after the first fruiting branch appears. Pruning at bud stage can distinguish the types of branches, make it easy to grasp the time of pruning, prevent it from being too late, cause excessive loss of nutrients, and promote ventilation. At this time, it is necessary to go to the leaves of old yellow, diseases and insect pests, and then remove about 9 young buds from 3 branches at the base of cotton. Concentrate nutrition on flower buds, promote early cotton bolls, and prevent flowers and fruits from falling.

2. Pruning at flower and boll stage

The main purpose of pruning at flowering and boll stage is to promote plant reproductive growth, improve fruit rate and cotton boll quality. The first is to top, usually around July every year, when the fruit branches grow to about 11 is the best time to top. It is best to go to the top at once, not on a rainy day, otherwise it will cause great hindrance to the wound healing of the plant. After hitting the top, we should properly spray Zhuangzhuangsu to promote growth, and then we should also pay attention to doing a good job. Finally, wipe buds and prune, remove some useless cotton bolls, and if there are too many buds, they should also be removed in time to enhance cotton photosynthesis.

3. Pruning during boll opening period

Under normal circumstances, cotton can no longer be pruned after entering the boll opening period. However, because the fertility in the field is relatively large, for some plants with strong growth, it is necessary to properly remove some branches and leaves at the base of the stem of cotton plants to improve the permeability of the field. And it can also reduce the shade degree and improve the conversion rate of fertilizer. For some plots with prosperous growth and poor field permeability, we also need to push the plants together properly to prevent the field from being too closed, reduce the humidity in the field and prevent excessive humidity from causing rotten bolls.

4. Chemical pruning

Chemical pruning is mainly used for those thriving cotton plants and greedy green and late-maturing plots. Through chemical pruning, the growth method of cotton plant was transformed into reproductive growth, so as to prevent cotton plant from growing too strong and do a good job of pruning and chemical control. It should be noted that if the cotton field is lack of fertility, lack of nutrition and weak plant growth, then it is not suitable to use chemical pruning technology. The pruning time should only be carried out in the full flowering stage, the dosage should be controlled, and the pruning time should be adjusted reasonably according to the plant growth.

The above is a brief introduction of the main technical points of cotton pruning. Cotton pruning is very important, which directly affects the yield and planting efficiency, so we must pay more attention to it. That's all for today's introduction. This article is for reference only. Thank you for your reading and support.