According to the spring climate characteristics of the cotton region, ie, rapid temperature rise, adequate light, and large temperature difference between day and night, the National Agricultural Technology Extension Service Center and the cotton expert steering group of the Ministry of Agriculture proposed the production technology for pure spring sowing and two ripe nursery transplanting cotton fields respectively. opinion: Pure spring sowing cotton field Prepared broadcast Irrigation and waterlogging 20 to 25 days before sowing, water irrigation and stumbling, for water-free sloping land, use topsoil, after rain, first cover film and other measures to create appropriate for the seed germination, seedling emergence Lyricism. Fertilization and soil preparation, 100 kg of organic fertilizer, or 2000 kg of high-quality home soil fertilizer. After fertilization, shallow ploughing of 10 to 15 centimeters followed by a series of rakes to level the cotton field to achieve a height difference of no more than 3 cm. When planted at 5 cm in the cotton field and at a ground temperature of 14°C, the water content in the 0 to 20 cm soil layer of the slightly saline-alkali soil reaches 70% of the field water capacity, and sowing when the water content in the severe saline-alkali soil reaches 80%. The best sowing depth is 2 to 3 cm. It is recommended to sow seeding at the time of sowing. The sowing and fertilizing integrated machine can be used with deep basal fertilizer. The herbicides were sprayed to control weeds before filming after sowing. Strengthen management Timely seedlings are placed on seedlings in the cotton field and seedlings are planted immediately after the seedlings are planted in the cotton field. Saline-alkali ditches are planted in 5 to 7 days after the seedlings are seeded, and the seedlings are planted in the afternoon for 5 to 7 days in the windless day. The true leaves reach 2 to 3 tablets. Dingmiao. The cotton fields that control fertilizer and water application of basal fertilizer may not be top-dressed, and the base fertilizer may be insufficient or the thinning cotton field may be lightly applied to raise the seedling fertilizer. Generally, cotton seedlings should not be watered, and individual cotton fields should be sent out early. If it is really necessary to water, short trenches need to be watered on demand. After watering, the cultivators should be ploughed in time to remove the compaction. Nursery The selection was carried out on the premise that the seed quality complied with the standard and sowed at the beginning of April. The bottom of the seedbed needs to be leveled, and the management is mainly controlled. The appropriate temperature from sowing to emergence is 25°C to 30°C. After the emergence of true leaves, the temperature is maintained at 20°C to 35°C. Insulation must be observed when cold waves are encountered. . During the nursery period, master the principle of “dry rootsâ€, supplement water according to the condition of the seedlings, and lightly replenish the water when there is no water in the later period. In addition, weeding out weak seedlings and dwarfing seedlings in time. Lifting The rooting agent was applied to the bottom of the seedbed with irrigation for 5 to 7 days before the start of seedlings, after which, the seedbed was no longer flooded. When the seedlings were lifted, one of the seedbeds was opened, and cotton seedlings were gently raised to take away a large number of native roots. Each 30-50 strains were tied into a small bundle. The seedlings are transplanted and transplanted. When a large number of seedlings are transported, the seedlings can be transported. Breathable cartons or other containers can also be used. The bottom of the container and the surrounding membranes are covered with a small amount of water to keep the roots moist. Transplanting Wheat field, wheat field, cotton field after the garlic, leisure field before the garlic, etc. Can not plow land, the implementation of plate hoe transplanting, clean up the ground debris before planting, require suitable soil moisture content, open the ditch or add water to the side of the hole while transplanting . When transplanting by hand, holes and trenches can be used, and sufficient water can be poured in time after planting. Artificial transplanting and machine-planting require seedling roots to be immersed in soil to a depth of not less than 7 cm. Planting high-temperature seedlings without planting low-temperature seedlings will stop transplanting in the cold wave. Anesthesia Medical Co., Ltd. , https://www.jssinoanesthesias.com
Seeds for seed preparation in the agriculture sector should be purchased by the agricultural sector. The seed should be selected from the velvety coating. 10 to 15 days before sowing, the fine weather is selected, and the drying season is 2 to 3 days. Zizi and Zizi, pay attention to the coating is strictly prohibited soaking.
sowing
The cultivator insect repellent promotes early cultivating tillage after cotton is set or after rain, with a depth of 6 to 10 cm. Insect pests of cotton are mainly aphids and red spiders. Aphids can be controlled by acetamiprid or imidacloprid, and spider mites can be controlled by avermectins.
Two ripe seedlings transplanted into cotton fields
At the time of cotton production