Transplanting technique of Cotton with plastic Film mulching in Wheat and Oil stubble

The transplanting period of rape stubble transplanting cotton is late and the growth period is too late. Plastic film mulching transplanting can increase temperature and preserve soil moisture, prevent waterlogging and drainage, and it is an effective measure to fight for early development, prevent rigid seedlings and win high yield.

After harvesting, the wheat and rape were ploughed, furrowed and ridged, and the ridge surface was covered with plastic film after spraying soil sealing agent. Combined with the application of rotten organic fertilizer 2000kg / mu, compound fertilizer 40kg / mu and boron holding capacity 1kg / mu.

The transplanting period of rape stubble should not be later than May 25, and that of wheat stubble should not be later than May 30. The seedling age should not be too old, and the seedlings should be transplanted when they have 2 or 3 true leaves. Seedbeds with early sowing and old seedlings should be controlled in time, move bowls and squat seedlings, and adhere to separate planting of large and small seedlings. When transplanting, the bowl noodles are 2 cm away from the ground. After placing the bowl, bury half of the pond soil, pour enough water, and bury the bowl flat after the water seeps down. The transplanting density varies according to the soil fertility, with 1400 plants per mu. Field management such as ploughing and weeding should be strengthened after transplanting.

Fertilizer and water management to clean up the "three ditches" in time to achieve communication between ditches and irrigation and drainage. After slowing down the seedling, apply the seedling fertilizer in time, and use urea 3kg / mu. After budding in the middle and late June, 4 fruit branches were fertilized with 10 kg urea and 10 kg potassium chloride per mu. When entering the flower and boll stage, the flower and boll fertilizer was applied again when the lower part sat on 1 or 2 big bolls, using 15kg urea and 15kg potassium chloride per mu. One week after topping (August 10-15), cover and top fertilizer was applied, and urea was used for 5kg / mu. The method of deep application of ditch was adopted to apply fertilizer. After late August, foliar fertilizer was sprayed according to plant growth, the weak ones were mainly sprayed with nitrogen and potassium fertilizer, and those with prosperous growth were mainly sprayed with phosphorus and potassium fertilizer.

Pruning and chemical control of the first pruning should not be carried out too early to promote vegetative growth and root growth and development, generally when there are 2 or 3 fruit branches, remove all the leaf branches under the fruit branches, do not remove the big leaves. The future pruning will be carried out according to conventional cotton. Chemical control began from the full bud stage. When the cotton plant had 4 fruit branches, 0.5 grams of pure methamphetamine and 25 kilograms of water per mu were sprayed on the top of the plant. The second chemical control is in the early flowering stage, according to the plant growth, 1 g / mu of pure methamphetamine is used. Enter the peak period of flowers and bolls, that is, when the fourth fruit branch sees the bell, use 3 grams of pure pipera per mu. After topping, use 5 grams of pure methamphetamine per mu. The dosage of methotrexate should be adjusted according to weather, seedling condition and soil fertility.