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Nagu Curry onion is a local green onion variety in Huize County. It was named after the vertical planting and the artificial cultivation of soil to make it lightly curved. It has a long history of cultivation. The white onion, lighter spicy, sweet and delicious, sterilization, cold prevention, rheumatism, and cardiovascular disease treatment are favored by the southern market. Now the main cultivation techniques are described as follows: Characteristic characteristics Nagu curved allium is late-maturing, strong cold resistance, optimum growth temperature is 12 °C ~ 20 °C, plant tall, fresh texture, crisp and sweet, nutrient-rich, high yield and stable production. Plant height 80 to 100 cm, white and beautiful white, 24 to 30 cm long, 1.2 to 2 cm in diameter. Due to the softening cultivation using open-pit horizontal soil, the onion body is curved at right angles to the cylinder, the leaves are bright green, the tubular leaves are slender, the leaves are sharp, the mesophyll is thin, the leaf sheath spacing is relatively thin, the leaves are rushed or obliquely stretched, and the surface is covered. There is wax powder. It is highly resistant to purple spot disease and has a very low incidence of downy mildew and viral diseases. The requirements for soil quality are not strict, but the growth of neutral or slightly alkaline soils rich in organic matter is the best and requires sufficient water supply. Nagu bending onion yields up to 5,000 kg per mu. The seedbed preparation is flat, fertile, and convenient for drainage and irrigation. No oysters of garlic and garlic vegetables have been planted within 3 years. Before the site preparation, a full-quality farmyard fertilizer of 4000 to 5,000 kilograms per mu is used, plus 40 to 50 kilograms of ternary compound fertilizer. The intensive cultivation is 10 to 15 centimeters deep and 10 to 201.0 to 1.2 meters long and wide. After flattening, the beds were sterilized by applying 50% carbendazim or thiophanate-methyl wettable powder 8 to 10 grams per square meter. Seed sowing season from August to September, before and after the white dew season is appropriate, to use about 90% germination rate, the new seeds harvested that year. Use 30% formaldehyde 300 times solution soaking for 3 hours, or 0.2% potassium permanganate solution soaking for 25 minutes. After soaking, rinse with water to kill pathogenic bacteria on the seed surface to prevent purple spot disease. Each planted an acre onion with a species of 150 grams, an area of ​​general nursery, can be planted 8 to 10 copies of the area: after sowing cover about 1 cm thick fine excreta, after emergence to keep the soil moist, and pay attention to the prevention and treatment of seedling pests, also To timely fertilizer. After the seedling management seedlings are sprayed at the same time and sprinkled with water, they shall be covered with fine soil. As long as the seedling period is not over drought, watering should be minimized, and weeding should be done to promote the growth of onion seedling roots. When thrips and leaf miners are infested, they can be sprayed with 800-1000 times omethoate or konjac pine and other pesticides. They can be sprayed 2 or 3 times. When onion fly larvae (cockroaches) injure onion seedlings, they can be used to add dichlorvos. Fruit emulsion 800 to 1000 times Irrigation root. Onion seedlings 2 true leaf stage, if the seedlings are poor, the seedlings grow slowly, each acre can be followed by 10 kg of calcium sulfate, and watering. If the growth of the seedlings is prosperous, do not top-dressing and control the watering to prevent the seedlings from growing too large. Transplanting seedlings when the onion grows to 25 centimeters or so, the seedlings are pulled up, 25 kg compound fertilizer is applied per acre in the plowed soil, and the soil is fully mixed with the finely divided soil. Level land, open flat bottom ditch, ditch depth 8 ~ 10 cm, width 15 ~ 20 cm, and then according to a certain distance will the onion seedling's pseudo stem part flat on the bottom of the ditch, the tip of the slope leaning against the ditch wall, line spacing can be 10 ~ 15 cm, spacing 3 ~ 5 cm, planting ditch, pouring planting water. After rowing, take a little fine soil for superficial coverage, cover the soil to cover just the light blue, and finally add decomposed farmyard manure or Artemisia annua on the soil, then dig a ditch to cover, and use 2000 kg of farmyard manure per acre. . When the seedlings grow to about 35 centimeters, the seedlings are transplanted again. The method is the same as above. The number of transplanting seedlings in the whole growth period is generally 2 to 3 times, and the row spacing of row seedlings increases with the number of row planting. The first time can be 315 centimeters. Press 425 centimeters for the second time and 530 centimeters for the third time. The irrigation roots of Welsh Onion grow shallowly, especially if the rows of seedlings are covered with soil and are not tolerant to drought. Watering must be done in time to keep the soil moist. After the planting and survival, combined with irrigation, the fertilizer can be top-dressed. In the early stage of light-green growth, nitrogen fertilizer is mainly used. Mushi urea is 20 kg or ammonium sulfate is 25 kg. Ammonium bicarbonate must not be applied. Otherwise, light blue and white can not be exported. Scallion white long-term, nitrogen phosphorus potassium to be used in conjunction with soil, topdressing three times per acre three times compound fertilizer 50 kg or 80 kg enzyme fertilizer. Can also use 0.5% borax solution foliar spray, mu fluid volume 50 liters, 10 days 1 time, continuous use of 2 or 3 times. Pest control purple spot: seedling stage, plant growth period can be the disease, mainly harm the leaves. In the beginning, it was a water-stained, white dot, and afterwards, it turned pale brown or slightly concave in the shape of a spinning braid. It continued to expand in brown or dark purple, with yellow halos in the surroundings, and then dried or broken. Control methods: 1 rotation with non-onion crops. 2 Use disease-free seeds and seeds should be disinfected. Seed treatment can be soaked with 40% formaldehyde 300 times for 3 hours. 3 chemical control. At the beginning of the disease, use 75% chlorothalonil wettable powder 500 to 600 times, or 70% mancozeb WP 500 times, or 64% antivirus M8 WP 500 times, 7 to 10 days , spray 2 or 3 times. Downy mildew: damage to the leaves, initially gray, late dry yellow, in serious cases when the leaves yellow. Control methods: Use disease-free seed and seed treatment. 1 Select disease-free plots and plant seeds. Freshly-seeded seeds should be soaked in warm water at 50°C for 25 minutes and sown after cooling. 2 Strengthen field management. Select high-lying, well-drained and ventilated plots; apply sufficient fertilizer and increase phosphorus and potassium fertilizers; use reasonable watering methods to avoid over-wetting onions; remove diseased plants in time. 3 chemical control. At the beginning of the disease, use 40% EB aluminum wettable powder 500 to 600 times, or 25% metalaxyl wettable powder 500 to 600 times, or 75% chlorothalonil wettable powder 500 to 600 times, every 7 Spray once every 10 days, spray 3 to 4 times. Onion rust: spraying with 15% triadimefon 2000 to 3000 times, or 65% zeocin WP 400 to 500 times, spraying once every 5 to 7 days for 2 to 3 consecutive times. Seed flies on the onion: The larvae infiltrate the onion bulbs, causing decay, yellow leaves, wilting, and serious deaths. Control methods: 1 Do not use unripe farmyard fertilizers. 2 If necessary, flood irrigation can be used to drown some larvae. 3 control larvae. At the same time as the roots in the soil, 90% dipterex crystals can be used 1000 times, or 50% dimethoate EC 1000 times. Or 50% phoxim EC 800 times solution root. 4 control adult. In adulthood, use 50% phoxim 800 times, or 25% chlorinated 2000 times, spray once every 7 days for 2 or 3 consecutive times. Submerged leaf rope and green onion thrips: leaf miner larvae zigzag through the leaves, white long strips were damaged, so that the quality of green onions. Onion thrips adults, nymphs damage onion leaves, the formation of long-shaped yellow and white markings, severe onion leaves distorted and brown, quality decline. Control method: Use 50% phoxim EC 1000 times, or 50% Malathion EC 1000 to 1500 times, or 50% Dimethoate 1000 times, spray every 5 to 6 days, spray 2~ 3 times. The harvest is generally harvested from the end of January until the end of February. At the time of harvest, they are plunged one by one and tied into bundles. Each bundle of 2 to 5 kg, and then cut off the upper onion leaves, can be listed.