The details of the use of dilute amine in cotton fields

The use of Dianchimine in cotton fields can coordinate the vegetative growth and reproductive growth of cotton, and play an ideal increase in production. The specific measures are:

First, the choice of the application of the object field: shrinking the Ann applicable to three kinds of cotton fields: First, the cotton field soil fertility is higher or more early fertilizer, and a large proportion of nitrogen fertilizer, cotton vegetative overgrowth, there is a long trend of cotton fields, including Cotton mulching film and cotton after wheat; Second, the plant type scattered, plant tall cotton field; Third, the cotton plant density is too large, and the row spacing is unreasonable, there is an early closure of the trend of the cotton field. Any cotton field with poor soil fertility, weak growth of cotton blocks, and climate drought should not be applied to shrinkage

Second, grasp the good application time: Practice has proved that the cotton field spraying shrinkage should be from the bud to the flowering period and before and after the focus of the application period. To determine when to use medication, it must be arranged according to the climatic conditions at that time and the growth of cotton seedlings.

Third, to master the application of dose: high-yield cotton area should vigorously promote the "to promote the transfer of tune" technology, fertilizer is appropriate early application of multiple Shi Lei fertilizer, so that the cotton to make full use of the previous fertility and light energy, fast long hair, quickly set up High yield seedlings. The chemical notes are caused by early application and multiple fertilization materials, causing irreconcilable vegetative growth and reproductive growth, and spraying in order to harmonize fertility, ensuring that the cotton seedlings are made early, stable, and not prematurely damaged. The principle of application is "a small number of times before light and heavy."

Under normal circumstances, a total of 4 treatments were applied before and after budding of cotton to budding: bud spraying at a concentration of 10 to 20 ppm for foliar spraying, 10 to 15 days for spraying at a concentration of 30 to 40 ppm, and then interval of 10 to 15 Days later sprayed with 50-60 ppm concentration and sprayed with 80-100 ppm before and after topping. When spraying, it is required to spray evenly, not to re-spray or spray, to ensure the quality of spraying, so as to avoid phytotoxicity. However, when determining the dose of DDP, it should be based on the time of application, climatic conditions and various stages of growth of cotton. If the application time is too early, the dosage should be light, the application time should be late, and the dose should be high; when there is little rain, The dose should be light, when there is a lot of rain, the dose should be high; when the cotton plant is prosperous, the dose should be light, and when the cotton plant grows mad, the dose should be high.

Fourth, field management: After the spraying in the cotton field, in general, the leaf color begins to darken in 3-5 days, and the best effect is 10-15 days. In 30-40 days, the leaf color is still deep. This feature often leaves people with the illusion that the cotton plant will not lose fat, thus relaxing the water and fertilizer management of cotton. Because of the dark green color of the cotton leaves, the insects have the characteristic of greening, and the cotton fields that are sprayed after shrinking the knots are likely to become sites for the concentrated spawning of cotton pests. Therefore, after the cotton fields are sprayed on the contracted section, the management of fertilizer and water must be strengthened. Pest control

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