Can Otog Banner in Inner Mongolia be Suitable for Planting Yellow Tobacco?

Yellow tobacco may not be suitable for planting in Otog Qianqi, Inner Mongolia. Yellow tobacco is a crop with less nitrogen demand, which is suitable for planting in plots with moderate fertility, water permeability, rich potassium content, no solanaceae crops in recent three years and convenient irrigation and drainage.

I. Selection and layout of tobacco fields

Second, fertilization, transplanting and plastic film mulching

50 kg of tobacco compound fertilizer, 20 kg of potassium sulfate, 20 kg of phosphate fertilizer 15 kg and 20 kg of peanut bran are mixed and stacked 15-20 days, and all of them are applied in strips at one time before transplanting, and the distance between fertilizer and tobacco seedlings should be 8- 10cm to avoid root damage. Transplanting time is about 10 days earlier than open field cultivation, and it will be carried out in cloudy or sunny afternoon in mid-March. Spray 50% butachlor herbicide 150ml and water 100kg evenly on the border, and then plant tobacco in a single row in each border with a spacing of 50-55cm, per mu1000-100. Root watering after planting: 5 kg of potassium nitrate, 5 kg of compound fertilizer and 300 kg of water are applied per mu. Finally, cover 0.005 mm thick and 80 cm wide plastic film, with a dosage of 4 kg per mu, dig holes and put seedlings, and compact both sides of the border with mud to prevent the wind from blowing, and the exposed film is 30 cm wide. Note that the soil should be wet before spraying herbicide.

Third, strengthen on-site management

5-7 days after transplantation, do a comprehensive examination and make up the missing seedlings in time. Do a good job in the management of drainage and irrigation, and require that the rain stops without waterlogging, and use water or smoke water for irrigation during drought. Topping should be timely and leaves should be left. 50% plants are topped at one time when they bloom, and 2-3 leaves are removed at the same time, leaving 65,438+08-20 leaves for each plant. For fields with strong tobacco plants and high fertility, two more pieces can be left in rainy weather, otherwise two less pieces can be left. Wipe the side buds every 3-5 days to make the tobacco buds not too thick.

Fourth, control pests and diseases.

Pests are mainly black cutworms, aphids, tobacco worms, etc., which can be controlled by pesticides such as trichlorfon and aphids. The main diseases are mosaic, bacterial wilt and black shank. Spray Phytophthora 1-2 times or dt-300 times for 2-3 times, 200 ml for each solution or 800 times for Rifu 1-2 times for each solution.

Fifth, timely harvest

Generally, about 65 days after planting, when the foot leaves begin to mature, according to the maturity characteristics, 2-3 pieces are picked at a time and every 7-8 days. Pick the middle and lower leaves after the dew is dry in the morning, pick the upper leaves when the dew is not dry in the morning, and harvest the top 4-6 leaves once they are fully mature. The harvested tobacco leaves should be tied with sticks and put into the furnace according to the position, thickness and maturity of the day.