Many cotton farmers are prone to some technical mistakes in the process of growing plastic film cotton, resulting in lodging and premature aging of cotton plants. The former is caused by the uncovering of the film too late, and the latter is caused by the insufficiency or shortage of topdressing. To this end, the following measures should be taken in a timely manner:
Remove the plastic film timely. In the early stage of cotton film, the absorption capacity of fertilizer and water is much stronger than that of direct-breeding cotton. If the plastic film can be peeled off at the right time and the field management is strengthened, the plastic film can fully exert its advantages; if the film is uncovered or unsealed, it is not conducive to the root system of the cotton plant. Zha, making most of the root system distributed in the upper layer of the soil, the cotton plant support ability is poor, very easy to lodging. Therefore, it is necessary to peel off the mulching film in time to promote root squatting. Film removal time is most suitable for the early flowering period.
Quickly make up fertilizer material. As the development process of mulch cotton is 20-30 days earlier than that of live cotton, all management measures must be advanced accordingly. In particular, it is necessary to quickly apply full-fledged flowers and bolls with 10 kg of urea or 10 to 15 kg of compound fertilizer per mu. For potassium-deficient cotton fields, an additional 5 to 10 kg of potash fertilizer should be added.
Promote balanced growth of plants. Because of the rapid development of mulch cotton, it is easy to grow wild and must take relevant measures to make it grow in balance. One of the measures to be taken is that after entering the bud period, use 2 to 3 grams of adipic acid per acre, or 8 to 12 milliliters of a booster and 40 kilograms of water. The second is to pay attention to the top dressing after spraying the conditioner. After spraying the conditioner, the leaf color of cotton quickly turns dark green, but this time it is impossible to ignore the problem of latent desorption, and the dressing is still top-dressing. At the same time, we must pay attention to the removal of residual film after removal of the film, so as not to affect the management of cultivator and post-cultivation.
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