First, the technical point 1, the seedbed selection must choose not to plant the onion of the ground, otherwise the winter seedlings seedlings rate increased, unfavorable seedling protection and increase production; 2, the greenhouse sowing date in August 1 to 5 days, broadcast volume: 85 Above the rate of more than 17% of seeds for buds/mu. The seedling sowing period of the earth is from August 5 to August 10, sowing rate: 85% of the seeds with a bud rate of 15 kg/mu. Save the cost of building sheds or renting sheds; 3. Spray field fills and water after seeding, eliminating the need for manual weeding costs; 4. Standards for raising seedlings are 6 to 7 mm in diameter, fresh weight per plant is 4 to 6 grams. Appropriate size seedlings. When the seedlings reach the raising standard, they can be raised and stored. 5. The over-winter seedlings were selected to have no onion land and watered 4 to 5 days before the ditch was stored to make the soil moist. After the seedlings are planted, the seedlings are planted with a planer ditch. The length of the seedlings is 80% of the length of the seedlings (the heart must be buried), the seedlings are 2 inches thick, and a thin layer of straw curtains (sun protection leaf) is applied on the seedlings. When the soil is frozen one foot deep, the straw curtain is thickened to more than 1 foot thick. After clearing and clearing, remove the straw curtain when thawing. When the temperature is appropriate, it is planted on the earth (in mid-April). Second, the comparison of winter and spring seedlings 1, no shed film, labor, labor-saving due to winter seedlings nursery period in the period of 8 to 10 months, the temperature is enough, no insulation treatment, so save the cost of renting a shed or build a shed. According to rent, the average cost per mu is 100 yuan less than that for spring sowing, and labor and labor are saved. 2. The cost of manual weeding in the province's seedbeds can be sprayed by wintering seedlings after seeding, eliminating the expense of manual weeding due to inability to spray herbicides on spring seedlings. The average cost of acres is 30 yuan less than that of spring sowing. 3, the provincial planting seedlings when the cost of winter seedlings planting time is early, missed spring planting time when the planting season, planting labor costs than artificial seeding each spring to reduce 20 to 60 yuan. The average cost of acres is 29 to 87 yuan less than that of spring sowing. 4, high selling prices, and more money left over on the winter seedling period onion a big selling price, the average per kilogram of spring onion higher than 0.03 yuan, the average benefit of 210 yuan higher than the mu, according to 7000 pounds per mu count). 5, high yield, more selling of winter over onion than the spring sown onion yield of about 10%. According to the spring planting of 7000 pounds of onion per mu, the onion average of 0.4 yuan per kilogram, the overwintering effect of onion mu is 280 yuan higher than spring onion. 6. Overwinter seedlings The onion is of good quality due to overwintering onions, drought resistance, and resistance to pests and diseases. It can fight drugs and reduce the amount of drugs. Therefore, compared with spring sowing and onion cultivation, it saves labor costs, reduces drug costs, and improves product quality. The cost is 20 yuan less than that of spring sowing onions. 7, harvest early, sell well for overwintering onion harvest in late July to early August, 1 month ahead of spring sowing onion harvest, can catch up with a good price, so as to ensure stable income, more favorable to interplant other crops, so that interplanting The high and stable production of crops will help improve the benefits of overwintering onions. In short, from the above analysis, it is concluded that the benefits of overwintering seedlings are at least 669-727 yuan more than the spring seedlings. Therefore, the technology for wintering seedlings has a strong advantage and has great potential for development. It is expected to be rapidly popularized in the next few years, so long as the wintering seedling raising technology and the spring sowing seedling raising technology are used in a reasonable manner to make the two techniques of onion harvesting. Interspersed with open, it can better play onion price advantage, so that onion this "golden industry" to bring greater economic benefits and social benefits to the majority of farmers.
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