Judging from the current progress of cotton development in most localities, this year should be a late year for cotton, with an average of about 10 per plant for pre-fume and early-breaking peaches, and a few high-yield model fields for about 20 per plant. The reasons for the late development are the "May cold in May" in late May and the lack of accumulated temperature. Second, the heavy rain in late June caused large areas of cotton to be stained. Third, the cotton flower boll encounters persistent high temperature and drought and inhibits cotton seedlings. Growth; fourth is the large area of ​​late boring, cotton seedling transplant delay.
Seen from the situation where the bolls fall off, the expulsion rate of some cotton fields due to the high density, partial nitrogen fertilization, excessive chemical regulation, and altered waterlogging and drought stress is higher in the early stage, and the temperature difference between the high and low temperatures from July 28 to August 5 is not significant. Humidity is relatively high, so that the accumulation of nutrients in cotton is less and consumes more, which also contributes to the loss of the bells. Therefore, some farmers say that this year's cotton grows well. Some farmers say that cotton is not acceptable, and some say it can only be regarded as an annual average.
Therefore, in view of the present situation of cotton production this year, we should help farmers analyze the situation of this year's cotton production, strengthen the management in the middle and later stages, and strive for a bumper crop of disaster-resulting production.
The benefits of cotton planting are expected to grow: First, the state has introduced measures such as increasing collection and storage, subsidies for improved varieties, creating high-yielding incentives, and lowering the price of agricultural materials to protect farmers' enthusiasm for planting cotton; second, the recent international textile exports are starting to pick up, which can be boosted. The cotton price rebounded. Third, the area of ​​the cotton fields was greatly reduced, the total production may fall sharply, and the cotton will be diluted. The fourth is the cotton trader's home purchase, and the price of seed cotton is higher than last year, which is also a signal that cotton may increase its price. Therefore, the management of cotton fields in the middle and later stages should be more important.
The effective flowering period is longer: From the experience of many years of fixed observation point of view, the white dew flower does not necessarily become the law, it depends on how long the autumn high temperature duration, the normal year, the white dew blooming flowers can be completely Mature, if the autumn time is long, flowers that opened on September 15th may also receive hands. It takes only 60 to 70 days for the time from flowering to boll opening. Some of the examples of cotton-planting models are “Floating Snow in the Sky, Picking Cotton from the Ground,†which is to say that the part of the flower that is opened after the white dew solar energy is turned into a flower that turns into a peach. Obviously, there is still ample time to manage field management.
Effective implementation of management measures: First, the second application of peach fertilizer, urea 10 to 15 kg per mu; Second, the shortage of potassium in the cotton field with a serious lack of boron, the roots of the application of boron fertilizer and various types of potash available outside the root 2 ~ 3 times; third is to continue to postpone the growth of the more prosperous cotton, but also continue to spray delayed type of plant growth regulators dildoamine or mozzarine 1-2 times; four is to pay attention to Spodoptera litura, four generations of cotton bollworm And the occurrence of cotton mealybugs, as soon as possible to prevent the rule.
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