The cotton field covers many provinces
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First, before the closure of the cotton line, the blank line was exposed for more than two months. Cotton is often vulnerable to drought. After the grass has been covered by the wide rows of cotton, the water content of the soil has increased significantly. It was determined that the cover soil had a 5-12% higher moisture content than the uncovered soil.
The second is the protection of bare cotton to meet the heavy rain, the soil available nutrients can easily be lost, cotton grass cover to prevent the waste of nutrients.
The third is to prevent compaction No matter what kind of grass cover cotton fields, after heavy rain wash, and then uncover the covered grass, you can see the soil is kept loose, with good permeability properties.
Fourth, weed control During the May-June period of rapid growth of cotton, it is also the moment when weeds symbiotically vie for each other, compete for fertilizer, and strive to survive. Grassed cotton fields are significantly less than uncovered weeds.
The fifth is to prevent the lodging of many cotton transplanted with the nutrition seedlings. Since the main roots are cut off, the ability to support the plants on the ground is reduced, and the cotton with more peaches and bolls in the middle and later stages will have a higher cotton weight. Lodging rate often reaches 70%-80%, and the grass covered cotton field cotton lodging is only about 10%.
The sixth is to adjust the soil temperature and high temperature season. The temperature of the 5 cm depth of the Gaikao cotton field soil is 1.3-3.8°C lower than that of the uncovered grass, ensuring the normal seat peach in the high-temperature cotton season.
Seventh, the improved soil cover grassland cotton field is better than the uncovered cotton soil soil aggregate structure, organic matter content increased by 0.03% -0.30%, will inevitably increase the stamina of cotton production.
Eighth, the rate of shedding of cotton buds that reduce the shedding of budding bells was reduced by 8.2-17.4 percentage points.
Nine is the cost savings Gato cotton grassland can be rotted in the cotton line that year, compared with uncovered cotton fields, the fertilizer investment per mu can save about 30 yuan.
Tenth, the cotton with early maturing and increased yield is more concentrated than the uncovered cotton, and the boll opening is early. The average yield of lint per acre is 5%-7%.