Different eco-cotton areas will generally combine local production practices and choose to stay in the cotton-headed species that have yield and quality advantages in the region. The disease-free cotton area will use conventional abundance products. In areas with severe yellow wilt disease, resistant varieties will be selected. In the area where there is a large number of cotton bollworms, cotton varieties that are both disease resistant and insect resistant will be used. However, the selection of good head cotton seeds does not mean that there will be excellent cotton seed quality. Especially in this year's unfavorable climate conditions, cotton seed quality issues become even more critical. During this year's cotton boll opening, the weather is fine, the rainy season is long, the temperature is low, and the number of flower purchases is seriously insufficient. At the same time, some cotton varieties have poor maturity and high moisture content. If the area of ​​cotton develops moderately next year, there will be a strong contrast between supply and demand for cotton. Therefore, after the selection of the headland varieties in the cotton areas, the quality inspection and storage must be carefully conducted. Scientifically determine the germination rate. Do a good job of cotton seed germination test.
One can determine the amount of cotton available;
Second, it can ensure the popularized area of ​​fine varieties;
Third, it can prevent blind overuse;
Four can be broadcast all seedlings.
The germination test should be carried out in batches and in multiple batches according to scientific regulations. Germination is good and cottonseeds with a germination rate higher than 80% can be used for planting. For cotton seed with malformed sprouts and rotting buds, it must not be used as a seed. Thoroughly sunburn cotton seeds. The selected cotton seeds must be carefully planted before sowing. Although most types of cotton seedlings are now subject to finishing coating, they should be sun cured before coating. Because, the sun can promote the post-maturation of cotton seed, enhance the vitality and enzyme activity of Wang, increase seed coat permeability and germination rate, but also can kill some of the bacteria attached to the cotton seed. General cotton seeds to the sun 2 to 3 times, each time continuous drying 2 to 3 days. To dry the mouth to bite cotton seeds crisp, hand-swept cotton can hear the sound so far. General cement drying field drying, you must first tarpaulin or other insulation and then drying cotton seed. Otherwise, dull seeds will form when the temperature is high, affecting the germination rate. Strictly control the storage of cotton seed. The main factors affecting the germination rate are the stored cotton seeds. According to the test, when the water content of the cotton seed is 8%, it can be stored for many years and still maintain a high germination rate; when the water content is 12%, it is stored until it is sowed. In the period, the normal germination rate can be maintained; when the water content is 13%, the germination rate is reduced to 49%; the water content is 15 to 17%; the storage time is 2 to 3 months; the germination rate is lower than 40%; the water content is 18 to At 20% storage for 1 month, most cottonseeds cannot germinate. This is because cotton seeds with high water content have a strong respiration effect, a large amount of heat is released, more nutrients are consumed, mold propagation is beneficial, and toxic substances are generated, which restricts the vitality of cottonseed and reduces the germination rate.
Therefore, the storage of cotton seeds, we must control the moisture content; Second, we must regularly determine the moisture; Third, we must quantitatively pile heap storage; Fourth, we must create a ventilation and humidity environment.
One can determine the amount of cotton available;
Second, it can ensure the popularized area of ​​fine varieties;
Third, it can prevent blind overuse;
Four can be broadcast all seedlings.
The germination test should be carried out in batches and in multiple batches according to scientific regulations. Germination is good and cottonseeds with a germination rate higher than 80% can be used for planting. For cotton seed with malformed sprouts and rotting buds, it must not be used as a seed. Thoroughly sunburn cotton seeds. The selected cotton seeds must be carefully planted before sowing. Although most types of cotton seedlings are now subject to finishing coating, they should be sun cured before coating. Because, the sun can promote the post-maturation of cotton seed, enhance the vitality and enzyme activity of Wang, increase seed coat permeability and germination rate, but also can kill some of the bacteria attached to the cotton seed. General cotton seeds to the sun 2 to 3 times, each time continuous drying 2 to 3 days. To dry the mouth to bite cotton seeds crisp, hand-swept cotton can hear the sound so far. General cement drying field drying, you must first tarpaulin or other insulation and then drying cotton seed. Otherwise, dull seeds will form when the temperature is high, affecting the germination rate. Strictly control the storage of cotton seed. The main factors affecting the germination rate are the stored cotton seeds. According to the test, when the water content of the cotton seed is 8%, it can be stored for many years and still maintain a high germination rate; when the water content is 12%, it is stored until it is sowed. In the period, the normal germination rate can be maintained; when the water content is 13%, the germination rate is reduced to 49%; the water content is 15 to 17%; the storage time is 2 to 3 months; the germination rate is lower than 40%; the water content is 18 to At 20% storage for 1 month, most cottonseeds cannot germinate. This is because cotton seeds with high water content have a strong respiration effect, a large amount of heat is released, more nutrients are consumed, mold propagation is beneficial, and toxic substances are generated, which restricts the vitality of cottonseed and reduces the germination rate.
Therefore, the storage of cotton seeds, we must control the moisture content; Second, we must regularly determine the moisture; Third, we must quantitatively pile heap storage; Fourth, we must create a ventilation and humidity environment.
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