Ten techniques for cotton cultivation

First, use fine varieties. Excellent varieties are the basis for high yield and high efficiency in cotton production. Production practices have proven that Lumianyan No.15, Lu 272, Lumianyan No.21, Lumianyan No.22, Guoshensi 668, Zhongmianuo No.45, Fengkangmian No.6 The comprehensive traits are prominent in all aspects of adaptability, stress resistance and high yield, and should be promoted as a key breed. Farmers should consult the local technical personnel when selecting the seed and purchase the seed in a qualified and credible formal unit.

Second, sowing before drying. Generally soaking in the sun before sowing 4 to 5 days, the seeds are spread on a wooden board or mat, thickness 7 to 10 cm, turning 3 to 5 times a day, should not be exposed on the cement or slate ground exposure. In addition, the treatment of cotton seeds with a strong nano 863 promoter can increase the germination rate, ensure that the seedlings are fully seedlings, and have no disease at the seedling stage.

Third, the appropriate sowing. Generally, the seeds are sown at a temperature of 5 cm and stable at 12 to 14°C. The sowing date of the mulch cotton is from April 15 to April 25, and the cotton is exposed after April 20. Sowing too early due to low temperature, easy to rot, more pests and diseases; too late to take root shallow, less lateral roots.

Fourth, soil fertigation. Principles of fertilization: Basal fertilizers are mainly supplemented by topdressing; organic fertilizers are mainly used, and chemical fertilizers are supplemented. The site preparation must be fine, and the land should be ground and broken, and the imaginary ground should be applied. 15 kg of urea should be applied per 667 square meters, 15-20 kg of diammonium phosphate, 15-20 kg of potassium sulfate, 2 kg of boron fertilizer, and 2 cubic meters of organic fertilizer.

Fifth, increase the amount of sowing. The top soil capacity of cotton is weak. In order to ensure that all seedlings are broadcast, the seeding rate should be appropriately increased. Artificial seedlings should be planted at 3 kg per 667 square meters, with 4 to 5 seeds per hole and placed in a concentrated manner; The amount of 4 to 5 kg. (Nongbo Seed Industry)

Six, sowing depth. The sowing depth is 3 to 4 cm. After sowing, the seedling merchants should loosen the soil, remove the compaction and increase the ground temperature in case of rain.

Seven, thinning, Dingmiao, check seedlings. When the cotton cotyledons are unfolded and timed, when the second true leaf is unfolded, the seedlings are set, and when 80% of the cotton seedlings are unearthed, the seedlings are checked for deficiency.

Eight, cultivator. Seedling cultivator requirements: early, diligent, deep, fine, thorough. After the rain, after watering, it must be ploughed. Usually, 4 to 5 times of cultivating, 2 to 3 times of cultivating between the plants, the depth between the rows is 10 cm, and the depth between the plants is 5 cm. (Nongbo Seed Industry)

Nine, pruning. Budhood: See the mad branches as early as possible. Flowering and bolling period: top-notch, remove the growing point of the main stem, usually in July 15-20. Group tips, like the top, generally leave 2 to 3 fruit sections per fruit branch.

X. Chemical regulation technology. Special attention should be paid to the control of the bud period, and the general principle of “a small number of times, a light weight, a gradual increase, and a gradual increase” is generally used. In general, in mid-June, early July, and late July, spraying paclobutrazole to prevent cotton .

Freeze Dried process is a method to freeze the dry liquid materials into solid and use the sublimation properties of ice under low temperature and pressure to dehydrate the materials and achieve the purpose of drying. Freeze-drying technology first appeared in the space field, and it is known to all that the space food has a high quality requirement, which is designed to meet the needs of the astronauts in space for the nutrition of fruits and vegetables. Because freeze-drying technology not only let the color, aroma, taste, nutrition of the food itself, but also make food more convenient to carry and transport. With the development of economy, freeze-drying technology has been applied to daily food processing, so the lyophilization process is also called aerospace food technology.

Freeze dried food is to use rapid freezing, vacuum dehydration method of ice, preserved the original color, aroma, taste, nutrition, and the appearance of the original material, the water content of only about 5%, because of the particularity of its craft, by freezing to break the cell wall, so crispy, nutrition, easy absorption