Cotton overblending can be relieved skillfully.
From late July to early August every year, many cotton farmers in cotton areas report that there is a phenomenon of vigorous growth of some cotton in the previous stage, and some even show a trend of crazy growth, so they use the plant growth regulator Dextromethamine. Due to the inability to control the concentration, when the application concentration was too high and encountered high temperature, the cotton plant showed the phenomenon that the branches and leaves could not expand, and the growth of cotton was inhibited. Here are several ways to ease the growth of cotton:
Spraying Huimanfeng active liquid fertilizer contains chelated humates and multi-component compound fertilizer, which has high activity, high energy, obvious effect of promoting crop growth and detoxification. Huimanfeng active liquid fertilizer with 1000 times liquid per mu can be sprayed on the leaf, once every 7 days, twice in a row.
Plant promoter 820820 can quickly penetrate into plants and promote cell division and proliferation. After the occurrence of drug damage, the 4000-fold solution can be sprayed every 6 days for 2 times 3 times.
Gibberellin can not only promote the synthesis of enzymes, but also promote the elongation of cells and accelerate the growth and development of plants. the concentration of gibberellin is 10mg / L.
Strengthen the management of fertilizer and water in the case of high temperature and drought, it is necessary to adjust fertilizer with water in a timely manner, so that the fertilizers already applied can be brought into full play.
Foliar spraying nitrogen fertilizer should be carried out when there is moisture in the cotton field and when the stomata of cotton leaves open in the morning and evening, and should be sprayed on the back of the leaves.
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Cotton chemical control technology
Cotton chemical control is the use of chemical control means to shape cotton into an ideal plant type and create a population with high light efficiency. 1. Chemical control status and function of cotton is a typical light-loving crop. High yield, early maturity and high quality of cotton in the precocious cotton area of eastern Hebei need to be realized by reasonable close planting, but reasonable close planting will inevitably aggravate the contradiction in the utilization of space and light energy between individuals and groups in the middle and later stage. Therefore, cotton chemical control has become an important supporting measure for reasonable close planting, and it is also the core content of promoting early stress resistance, especially simplifying the cultivation technology system. At present, Ketamine is used in cotton chemical control.
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Technical Suggestions on Cotton Flowering and Boll Stage Management
Cotton flowering and boll stage is the key period for both vegetative growth and reproductive growth. During this period, the vegetative growth is gradually transformed into reproductive growth. The plant grows vigorously and the daily growth is large. It is the peak period for fertilizer and water demand in the whole life. It is also the key period for forming economic yield. It must be carefully controlled in time to adjust measures to local conditions and seedlings. It is necessary to do a good job in pest control, chemical control, pruning, intertillage and loosening soil. At the same time, it is reasonable and scientific to apply fertilizer and timely appropriate irrigation to make the plant grow steadily and steadily. Plant type and field population structure reasonable, ventilation,
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