First, the development of onion

Onions have the characteristics of high yield, good quality, wide adaptability, strong resistance, resistance to storage and transportation, and long supply period. Onions contain a variety of nutrients, with sterilization, disinfection, anti-aging, anti-cancer and anti-cancer effects, more and more favored by consumers, the market demand is large. At present, onions are an important pillar for the development of rural economy and increase of farmers' income in Liyuantou Village, Xiangcheng District. In 2015, the village had an area of ​​4,000 mu of onion planted with an average yield of 3,200 kilograms and an annual production of 12.8 million kilograms of onions. The products were sold to large cities such as Beijing, Shanghai and Harbin. The continuous, healthy and steady development of the onion industry plays an important role in adjusting the market demand and solving the market supply in the off-season.

Second, there are problems

1. The phenomenon of blind and arbitrary fertilization is prominent, resulting in too much or too little fertilizer, which affects the normal growth and development of onions.

2. Some onion farmers are accustomed to planting old low-yield traditional onion varieties.

3. Some onion farmers' control of the onion pests and diseases was not timely and incomplete.

4. Some onion farmers have replanted light pipes, resulting in poor management of the cultivator.

5. Some sowing too early, onion seedlings too large, prone to vernalization, so that early onion convulsions, some sowing late, seedlings weak, fertility delay, bulb expansion period shortened, low yield.

Third, high yield cultivation technology

1. Heavy varieties, selection of high yield, high quality, disease resistance, good market golden sun, local red onion and other fine varieties planted.

2. Strengthen nursery and seedling management

2.1 Replanting seedlings, fertilizing and culturing. Select a plot with a high topography, convenient irrigation and irrigation, and fertile soil as a seedbed. After 2-3 times of plowing the seedbed, use 2000kg of bioslag or 2000-3000kg of finely crushed manure per acre, spread evenly, and treat The width is 1-2m, height is 10cm, and the width of the ditch is 25cm. Each mus of 5kg of urea or 10kg of compound fertilizer is applied as a seed fertilizer. After irrigating the water, it can be sowed in the middle and late August.

2.2 Fine sowing. Generally sowing 4-5kg per acre seedbed, covering 1-1.5cm thick fine soil after sowing, keeping the soil moist after sowing, timely watering according to soil conditions, combining topdressing with watering, fertilizing the amount of per person with a rotten manure When urine 1000-2000kg or urea 10-16kg, seedlings have 1-2 true leaves, timely mowing and weeding.

3. Timely field fertilization and transplanting

3.1 Scientific land preparation, rational fertilization. Finely divided soil blocks, apply enough base fertilizer, apply 3000-3500kg of biogas residue per mu, or 4000kg of high-quality farmyard fertilizer, 8kg of urea, 20-25kg of calcium sulphate, 10-20kg of potassium sulfate, or 50-60kg of plant ash.

3.2 Normalize and smooth the surface. According to the specification of 2m, the width is 1.8m.

3.3 Reasonable cover film, timely weeding. Chemical weeding before cover film colonization, 100 g per acre with “Pometrinia Net” or 150 ml “weeding pass” is sprayed on the surface of 50 kg of water, then covered with a 2 m wide plastic film, soil compacted with plastic film, after 1 day Can be planted, so weeding effect is better.

3.4 Proper close planting. The high-quality onion seedlings with well-developed roots, robust growth, and uniform size were planted directly on the 19cmx19cm line by the fingers in the middle and upper months of May. Generally, 1.4-15,000 strains were transplanted per acre in the fertile fields, and the medium blocks were moved per acre. 1.2-1.3 million plants are planted, and planting depth is 2-3cm.

4. Strengthen field management

4.1 timely watering. About 20 days after the onion colonization is a mild seedling stage, the principle of water management is to water more often, the amount of watering should be less to keep the soil moist is appropriate. When the onion enters the growth stage of stems and leaves, it is necessary to promote its growth and robustness, but also to prevent the plants from being leggy, generally pouring water once every 8-9d, so that the soil is dry and wet, to achieve the purpose of promoting growth and controlling leggy. In June, after onion bulbs begin to swell, they must be irrigated at any time to keep the soil soft and moist, and stop irrigation for 7 days before harvest.

4.2 Cultivated weeding. In the general seedling stage, 3-4 times are removed, combined with watering, 2-3 times weeding during the growing period of stems and leaves, and cultivating when onion is sealed, and the cultivating depth should be 3cm.

5. Proper control of pests and diseases

5.1 prevention, comprehensive prevention and control. Priority shall be given to agricultural, physical, and biological control measures, applying mulch-covered cultivation, soaking in warm soup, seed soaking with pesticides, and implementing paddy-upland rotations or rotations with non-liliaceous vegetables for 2-3 years to reduce pests and diseases and reduce fields. The amount of pesticide used and the number of applications.

5.2 onion frost, purple spot prevention and treatment. At the beginning of the disease, 150 million live spores/g of wood toxin 600-800 times liquid, 27% high fat film emulsion 150 times, 75% chlorothalonil WP 600 times spray, spray every 7-10 days, Even defense 2-3 times.

5.3 Prevention and treatment of onion ash poisoning. In the early stage of disease, 10% polymycin B wettable powder 50% carbendazim WP, 70% thiophanate-methyl WP 500 times spray, spray once every 7-10 days, even prevention 2 - 3 times.

5.4 onion blight prevention and treatment. 72% Kelu wettable powder 600-800 times, 80% wettable powder 800 times spray, spray every 7-10d again, even 2-3 times.

5.5 Prevention of onion pests Onion pests mainly include onion pod borers and onions. Silver-gray mulching was used to cover the damage of locusts. Yellow mucilage cardboard was used in the field to trap and kill humerus disease and green onion. 0.3% azadirachtin EC 800 times, 10% imidacloprid WP 2000 times, and 10% Lingbaik were used. Emulsion 1200-1500 times spray or use pyrethrum, biogas spray control.

6. Timely harvest

When the color of onion leaves changes from green to yellow, the outer skin of the bulb is chapped, and the base of the pseudo-stem softens, the onions can be harvested. When harvesting, sunny days should be selected, the roots should be pulled up, and harvested, packaged and sold in batches.

Pumpkin Seed Kernels

Pumpkin Seed Kernels,Pumpkin Seeds Kernels Roasted,Shine Skin Pumpkin Seed Kernels,Pumpkin Seeds Or Kernels

Wuyuan county dafeng oil food co.,ltd , https://www.sundafengfoods.com