I. Reasonable selection and fine preparation Sets of soils should be selected for soil loosening, good permeability and rich organic matter content. Within three years, there are no fields for growing tobacco and solanaceous crops. For the former crop, cereal crops are appropriate, and glutinous rice and wheat bran are particularly good for planting flue-cured tobacco. Mouthwash. After harvesting the former crops, the crops shall be ploughed in time to eliminate spurs, eliminate debris, and smash the clods. Second, the method of interplanting The proportion of land used for wheat and flue-cured tobacco is 1:1, that is, 70 cm in wheat, 6 rows of sown wheat, and l2 cm spacing. 70 cm of flue-cured tobacco, 1 layer of flue-cured tobacco on the ground-covered membrane, 45 cm of plant spacing, 15750 plants/km2, wheat planted with three rows of animal power planter, flue-cured tobacco planted in early March, and transplanted in mid-May, with better fertility. Winter crops in the plot can be planted with tobacco leaves in the free zone of 3 rows of winter spinach or 4 rows of onion seedlings, harvested and marketed in late April next year, and then replanted with flue-cured tobacco. Third, select the species, pharmaceutical treatment Select the seeds with high purity, high germination rate, early maturity, medium dwarfing, strong lodging resistance, and good yield, mainly Ningdong 3 and Changwu 134. When flue-cured tobacco is raised, the seeds are evenly sprinkled on pre-prepared nursery pots, then covered with 2-3 mm thick screened fine soil, and a bow shed is set up. The temperature inside the shed is controlled at 25-28°C, which is lower than At 25°C, cover tightly and ventilate at 28°C. The water holding capacity of the seedbed is in a moist state of 80%. After the emergence of the big cross, Dingmiao, grow to 6-7 true leaves gradually remove the film ventilation and hardening seedlings, when the true leaves of all 8 uncover the film, hardening time of not less than 10 days, 9 leaves for transplanting. Fourth, rational fertilization The amount of fertilizer required for wheat is large, and the law of fertilizer requirement of tobacco is different from other economic crops. It is required that the fertilizer be exhausted after maturity of the tobacco to achieve the purpose of stratified yellowing. Before planting sowing, unified basic farming manure with 45,000 kilograms per square kilogram or more, basic application of urea 150 kilograms per square kilometer, diammonium phosphate 120 kilograms or general phosphorus 750 kilograms, wheat seeding with seed fertilizer diammonium phosphate 45 kilograms When returning to the green, 150 kg of urea was chased. The flue-cured tobacco was applied to the mulching film before transplanting. The ditch was applied with 75 kg of urea, 75 kg of diammonium and 150 kg of potassium sulfate fertilizer. Sets of wheat grown after harvesting are prone to defertilization, and topdressing should be carried out. When the leaves are slightly defertilized, the leaves are sprayed with high-potassium dihydrogen phosphate and urea in an amount of 1.2-1.5 kg/km 2 , and the concentration is controlled at 3-4%. Spraying is usually done once every 7-10 days. When the tobacco plant is severely de-fertilized, it is necessary to insert the roots for irrigation. That is, use a pointed stick to insert a hole of 8-12 cm deep l2 cm away from the root of the tobacco plant, using high-potassium dihydrogen phosphate. 15 kg, urea 40-60 kg, dissolved into the water after the hole into the hole, and then seal the hole, the concentration at 5%. When the wheat returns to green, it will take 1-2 times of turfgrass and remove the weeds in the field at any time. When there are irrigation conditions, winter water is poured in early November. In the middle and mid-April of the following year, spring water is irrigated in late spring and in late April, two waters are filled in late April. After mid-May, tobacco is lightly filled with water after planting. After the planting of flue-cured tobacco, the seedlings were immediately checked to ensure seedlings, and the right leaves were topped to control the number of leaves remaining, which reduced the nutrient loss and improved the quality of tobacco leaves. Generally, 18 leaves per plant were more suitable. Prevent pests and diseases: Use 2.5% of the enemy to kill 400 times liquid foliar spray to prevent tobacco smoke and tobacco budworms; use 5% of bacteria to clear 300 times liquid or 15% Triadimefon 800 times spray to prevent anthrax, powdery mildew, standing Blight, black stem disease and other fungal diseases; in the tobacco leaf bed, 2-3 days before transplanting, spray two-and-a-half times the 83-1 antibiotic agent 100 times after transplanting, to control mosaic disease, leaf rolling disease Other viral diseases, while enhancing the disease resistance of tobacco plants, improve tobacco quality and yield. Wireless Camera Kits With 4 Camera
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V. Strengthening field management
Currently, for this application scenario, there are also several industry pain points for equipment manufacturers and solution providers:
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