Land selection, site preparation, fertilization (1) Selection of land: To select land plots with non-Umbelliferae vegetables as the top lot, soils with no soil, water, air pollution, soil with loose soil, deep soil layer, medium fertility, and water-contaminated sandy soil it is good. (B) Autumn: after the autumn harvest last year, clean the garden, fall more than 25 cm (soil oysters), after rolling pressure, to achieve a good degree of water conservation. (3) Spring Irrigation: Before sowing in the coming year, if the waterlogging condition is not good, we must use river water and well water in time for spring irrigation. Sprinkler irrigation can be used for conditions. (D) Fertilization: Carrot is a potpourri vegetable crop, so potassium fertilizer should be reused. Use good quality farmyard fertilizers of 5000-8000 kg/mu, 10-15 kg of diammonium phosphate and 5 to 7.5 kg of potassium sulfate; 40-50 kg of carrot fertilizer or ternary compound fertilizer can also be used. -50 kg, as in the former cornfield, the first year of production, the application of compound fertilizer should be slightly less, about 35 kg. Variety selection (1) Variety selection: The three red and red varieties with good quality, high yield, strong disease resistance, resistance to twitching, good storage, and good resistance to stress should be selected, such as Hongying No.2, Xuguang Wufen, and Qianhong 100 days. Kuroda five inches and other varieties. (2) Seed treatment: The scattered seeds that are pre-ordered should be sun-dried in the sunlight for 2-3 days before sowing, which will help improve the bud rate and control pests and diseases. The coated seeds do not need to be processed. The amount of mu is about 250-280 grams. sowing According to the characteristics of varieties, natural conditions and the local carrot pre-receiving period to determine the premature prone to premature bolting phenomenon, too late late-production temperature will affect the yield and quality of the root. The paddock is generally sown in the middle of April when the soil is stabilized at a temperature of 10 cm deep at 4°C. Seeding, laminating Choose a ditching, sowing, earth-covering and repression all-in-one carrot planter, adjust the spacing 15 cm, plant spacing 10 cm (2-3 seeds per hole), ditch depth 10-12 cm, use 25 hp tractor as power, each bed 4 lines, completed in one go. In order to prevent the underground pests from being applied to the sowing ditch, 50% phoxim EC 250ml and 2.5 kg of grain may be applied after the ditching. In order to control the growth of field weeds at the seedling stage, dilute 200-250 g of 48% trifluralin EC with 50-60 kg of water, and spray evenly on the bed surface before covering with soil. After sowing, people wear flat shoes and follow the ridge to form solid natural ridges so that the seed is in close contact with the soil and is conducive to emergence. Then cover the film, to tighten the compaction, every 50-100 cm with soil horizontal pressure on the membrane, or 200-300 grams of soil with a plastic bag suitable pressure seedbed to prevent the wind from uncovering the film. Field management (I) Seedlings and seedlings To promptly visualize the temperature within the membrane, when the temperature within the membrane reaches 27-28°C, the seedling has grown to the second true leaf in a timely manner. Initially, one eye is drilled every 10 meters or so, and the size of the seedling is gradually increased according to the weather conditions. Glancing again, reach an eye about 30 centimeters. 4-5 pieces of real leaf time Dingmiao, general seedling distance of 10 cm, remove weak seedlings, seedlings, diseased seedlings, soil around the seedlings should be compacted after compaction, to prevent the top of the fleshy roots exposed the ground to form a green shoulder, try to ensure Miao Qi Miao uniform to prevent the emergence of Big head carrot. (B) Reasonable water and fertilizer Spring carrots are poured in water before spring sowing and in the case of better summer rain, no watering is required until harvesting. Unless in the middle and late periods of special drought conditions, sprinkler irrigation can be used conditional, should not flood irrigation, to prevent the emergence of cracking, affecting the commercial nature. (III) Pest Control 1. Pest Control: Less carrot pests in spring are mainly harmful to underground pests and aphids. Control methods: Use 50% phoxim EC 100 ml gluten, corn residue and other 1-2 kg (with pan fried) mixed baits, sowing the ditch Application, or spread the bed evenly before rotating tillage, can control pests such as golden needleworm, cockroach, cockroach, Mongolian gray elephant weevil, four cashmere gold turtle a. The aphids were sprayed with 600 times liquid of DuPont Wankling or 1500 times of 10% imidacloprid wettable powder. 2. Disease prevention and treatment Black rot: At the beginning of the disease, 45% of SPK 1500 times or 50% of acetaminophen WP 1000 times can be used. These two agents are used interchangeably, once every 7-10 days, continuously spraying 2— 3 times. Black spot disease: Same as black rot agent control method. Soft rot disease: 77% can kill WP 2000 times or 78% 10,000 800-1000 times Irrigation roots, spray every 7 days -10 days, a total of 2-3 times. Timely harvest When the roots of the flesh are fully swelled to reach the commodity standards, they are harvested at the right time. Harvesting too early or too late can affect the quality of fleshy roots and thus affect yield. The fleshy root reaches 18-20 centimeters, the root weight is 200-250 grams, and when the root tip of the flesh is rounded, it should be timely harvested to obtain a finished product of good quality. Fei County Mingtao Electronic Co.,Ltd , https://www.yourbeautyassistant.com