Method for directly sowing cotton by utilizing mixed soil coverage

Abstract

The invention belongs to the technical field of cotton cultivation, and discloses a method for directly sowing cotton by utilizing mixed soil coverage. The method comprises the following steps that seeds are dried in the sun for 1 day before sowing, delinting is conducted with sulfuric acid, soil preparation and film covering are conducted on a cotton field, mechanically punching is conducted after film covering, two cotton seeds are sown in each hole, and covering is conducted with mixed soil. According to the method, only two cotton seeds need to be sown in each hole, however, four or more cotton seeds need to be sown in each hole in a traditional cotton direct sowing method, and the using amount of the cotton seeds is greatly reduced; the mixed soil used in the method is smaller in density and great in air permeability than common soil, meanwhile, the mixed soil does not carry germs, soil-borne diseases can be reduced, and the growth environment of crops is improved; and water, fertilizer and air are reasonably supplied, the water, the fertilizer and the air directly affect the quality of seedlings and the comprehensive production capacity after the seedlings are grown and are the premise of robust seedling and high yield, through a mixed soil coverage method, the rate of full seedlings in each hole can reach 90% or above, and the yield of seed cotton reaches about 4700 kg.hm<2>.

Description

technical field [0001] The invention belongs to the technical field of cotton cultivation, and in particular relates to a method for directing cotton by covering with mixed soil. Background technique [0002] At present: although the short-season cultivation of direct-seeded cotton after oiling has achieved initial success and has been applied in a certain area, it is still difficult to achieve full cotton seedlings in one sowing, and the yield is low and the quality is poor. Choosing the appropriate live broadcast technology has become an important research topic for current and future agricultural production. [0003] Conventional cotton direct seeding is directly covered with cotton field soil, but cotton field soil contains many pathogenic bacteria and viruses, resulting in frequent occurrence of seedling diseases, and the low emergence rate of direct seeding cotton is a difficult problem in cotton production. In addition, the soil in the southern cotton area of ​​my co...

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Problems solved by technology

[0003] Conventional cotton direct seeding is directly covered with cotton field soil, but cotton field soil contains many pathogenic bacteria and viruses, resulting in frequent occurrence of seedling diseases. The low seedling emergence rate of direct seeding cotton is a difficult problem in cotton production

In addition, the soil in the southern cotton area of ​​my country is mostly clayey soil, and the sowing time of direct-seeded cotton after oiling is in mid-May, during which there is a lot of rain. If it is directly covered with cotton field soil, there are many problems such as poor air permeability, slow emergence, and low emergence rate.

[0004] Through the above analysis, the existing problems and defects of the existing technology are: the existing cotton direct seeding method adopts the direct covering of cotton field soil, which easily leads to many diseases at the seedling stage, low seedling emergence rate of direct seeding cotton, poor soil air permeability and slow seedling emergence

[0005] The difficulty in solving the above problems and defects is as follows: because the seedling emergence rate of traditional cotton direct seeding is low, it is difficult to sow all seedlings at one time, and the amount of seeds used is large. The method of raising seedlings in nutritional pots is still mainly used in southern cotton production, which greatly increases the labor cost of cotton. This has become the main obstacle to light and simplified production of cotton, resulting in a low level of mechanization, high cotton planting costs, and poor willingness of cotton farmers to plant cotton

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