Three Key Points Of Double Membrane Cotton Planting Technology

< p > in recent years, with the continuous improvement and improvement of cotton planting technology, the area of < a href= "http://www.91se91.com/news/index_c.asp" > double membrane cotton < /a > has expanded correspondingly.

The so-called double membrane cotton will be covered with plastic film covered nutrition bowl cotton seedlings pplanted to the field covered with plastic film.

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< p > double membrane cotton has remarkable effects of heat preservation, moisture conservation, fertilizer conservation, weeding, early onset, early maturity, and high yield and quality.

However, in the promotion process of large area of double membrane cotton, due to the difference of a href= "http://www.91se91.com/news/index_q.asp" > cotton planting technology < /a >, the farmers' cultivation level is different, and also exposed some weak links in technology. One is cotton lodging, the two is premature senility of cotton.

The former is caused by late film uncovering, and the latter is caused by not timely or insufficient top dressing. These two problems often impede the development of the advantages of double membrane cotton.

To this end, measures must be taken to prevent lodging and premature senility.

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< p > 1. Timely remove the plastic film.

Local studies showed that the main root of double membrane cotton was truncated during pplanting. A large number of lateral roots and fibrous roots were mostly concentrated in the 10~20 cm layer of soil. Due to the superior temperature and fertilizer conditions, the ability of soil supplying fertilizer was strong, and the ability of cotton with double membrane cotton to absorb water and fertilizer at bud and flowering stage was much stronger than that of direct seeding cotton.

Vegetative growth and reproductive growth of aboveground parts were much better than those of direct seeding cotton.

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< p > at this time, if we can timely remove the plastic film and strengthen the cultivation, the double membrane cotton will be able to give full play to its advantages. However, if the film is uncovered or uncovered, if the storm comes, it will easily Lodge because the cotton roots are mostly distributed on the top of the soil.

Therefore, we must promptly remove the plastic film, manage it meticulous, and promote root protection.

The time of film removal is most suitable for the first flowering stage.

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< p > two, quickly add fertilizer.

The development of double membrane cotton is 20~30 days earlier than that of direct seeding cotton. The amount of fertilizer consumption in the early stage is larger than that in direct seeding cotton. All management measures should be correspondingly early. In particular, the flower and boll fertilizer should be applied quickly, and the urea should be applied to 10~15 kg per mu, or three kg of compound fertilizer 10~15 kg.

The cotton field with potassium deficiency also needs 5~10 kg of potash fertilizer per mu, and 15 kg of potash fertilizer per mu.

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< p > when the average yield of cotton per plant is 2~3 peach, 15 kg of urea should be applied per mu.

If the management of fertilizer and water is neglected, the cotton will soon fall into a large area after peaches, which is also accompanied by physiological withering disease.

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< p > three, coordinated growth.

Double membrane cotton is also easy to cause growth because of its rapid growth. It is necessary to take relevant measures to balance growth. First, after spraying into the bud stage, the delayed plant growth regulator, namely, 2~3 or 8~12 milliliters of water, can be used for 40 kg of water. Two, it is necessary to note that after spraying the regulator, the color of the cotton leaves will soon turn to strong green, which can not hide the contradiction of latent fertilizer removal. The top dressing should be timely topdressing; three, attention should be paid to keeping the residual film in the field when the film is uncovered, so as not to affect the management of the field cultivation and stubble management; four, spraying boron fertilizer for 2~3 times, and promoting the application of high content of fast boron.

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