Onion high-yielding cultivation technology without pollution

In recent years, through the adoption of pollution-free cultivation techniques, we have achieved 1/15 hectares (1 mu) of Asian spindock output of more than 5,000 kilograms, and the quality of our products has surpassed Japanese Grade 1 standards. Our export volume has increased year by year and we have achieved good economic, social, and environmental benefits. benefit. The technology is described as follows: Select varieties have good quality, good disease resistance and resistance, good storage resistance, good taste, and high yield, such as OP yellow and yellow brown. Select seedbed seedbeds for plots with high dryness, good soil texture, and high levels of soil fertility. Disinfecting soil To prevent seedling disease, we must disinfect seedbed soil, use 50% carbendazim or 50% thiram or 40% seed dressing double, use 8-10 grams per square meter, mix well with soil, take 1/ 3 Sprinkle on the seedbed, 2/3 to cover the seeds after sowing, also use 40% formalin 30 ml, add 100 times the water to spray seedbed soil disinfection. After spraying, covered with agricultural film, boring 4-5 days after the film cultivator, 2 weeks after sowing. Prepare nutritive soil seedbed soil loose and fertile. The nutrient soil is prepared at a ratio of 1:10 for fertilizer and soil. The fertilizer is a quality rotten organic fertilizer that has been stuffed and smashed and sieved. The seedbed is 1-1.5 meters wide, and the length of the seedling can be determined according to needs. The length of the staff is not more than 20 meters, and the ratio of seedbeds to fields is 1:15. Sowing and seedling management sowing time in the first half of September, when transplanting seedling age 50-60 days. Sowing method is mainly used for sowing, but it can also be sowed. The amount of seeds used is 5-6 grams per square meter, and 100-150 grams per 1/15 hectare of field crops is cold. Pouring water before sowing can be seeded 7-8 days after sowing. After the emergence of seedlings and time, seedlings from 3 cm. Pay attention to pest control and eliminate weeds. Soil preparation and fertilization onion roots are shallow and hi fertilizer water should be selected. Soil fertility, water retention and nutrients with good soil properties should be selected. For every 1/15 hectares, 4,000 to 5,000 kilograms of high-quality organic manure is applied (organic manure is best to be sterilized), 75 to 100 kilograms of potassium sulfate compound fertilizer, and 30 kilograms of urea are uniformly spread on the ground, and then ploughed and plowed. 20-25 cm, to intensive cultivation, so that the soil is no dark spots. After the site preparation, the ridges were ridged, ridge width 30-40 cm, width 180 cm wide, and planting width 210-220 cm. For every 1/15 hectares, 1 kg of insecticides were sprayed on insects to clean the land. For every 1/15 hectares, Shi Tian fills up 100-150 ml, and finally covers the mulch. When the seedlings were planted and colonized, the seedlings with a seedling age of about 50 days were graded, and the stems were 0.4-0.6 cm thick and 0.6-0.8 cm thick, and were planted separately. The seedlings with a stem diameter of 0.3 cm or less and a stem diameter of 0.8 cm or more were removed to ensure uniform and uniform growth. 1/15 hectares of planting density of 20,000-22,000 plants. Punching planting, planting depth to bury bulbs, watering is not appropriate. After planting, we must pour enough seedlings. Field management soil smelting freezes when pouring frozen water to prevent freezing damage. In late March and early April, combined with fertilization and pouring back to Qingshui, 1/15 hectares of topdressing 15 kg of urea and 15–20 kg of potassium sulfate compound fertilizer. When the bulb begins to swell, it floods with water, 1/15 hectares of topdressing urea 8-10 kilograms, potassium sulfate compound fertilizer 15 kilograms, and micro-fertilizer can also be sprayed. Prevent pests and diseases timely. Timely harvest 20 days before harvest, no fertilizers or pesticides are allowed. When one-third of the leaves of onions are yellow and pseudo-stems are soft, harvest them timely and harvest them in sunny weather. Do not collide at the time of collection and carry out drying in a timely manner. Try to avoid direct sunlight, and then grade and pack.

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