Planting method of green onion:
1, apply sole fertilizer.
All-season onions like loose, fertile and disease-free soil, and fertilizers are better. Do not use immature pig, cow, chicken manure and discharged wastewater. If used, it will bring diseases and eggs to the soil, plant growth will be poor, and the roots of crops will be easily burned, resulting in dead seedlings, lack of seedlings and reduced production. Brand fertilizers should be applied, and unqualified fertilizers with high packaging label content and low price should not be applied.
It is suggested to use Li Lei seaweed fertilizer 15- 10-15 50+chitin160+duo10 or Li Lei15-10 per mu.
Step 2 transplant
From March to June, 65438+February, transplanted onion seedlings had high survival rate, few dead seedlings, short slow seedling stage and rapid growth and development. Generally, seeds are not used for propagation, but transplanted into individual plants. Before transplanting, soak the root for 10-30 minutes, and soak the root with seedling Yongsheng 1 bottle 15 π+ two branches at one nest end, 20π+ Wang Gen 2 packets, 30π+ Kekeshan 2 packets, 50ml+ water 15㎏ to kill the germs on the root.
Before transplanting, it should be divided into compartments with a width of 1.5-3 m, a width of 30㎝ and a depth of 20㎝. According to the row spacing of 45㎝, open transplanting ditches on the compartment surface, plant seedlings according to the plant spacing of 10- 15㎝, plant onion seedlings per mu 10000- 14000, and plant 3 onion seedlings per mu. The planting depth is 6㎝. Water enough after transplanting to improve the survival rate.
3. Surface treatment
7- 10 day after planting: Miaoxian 1 bottle 15 π+ 1 nest end 2 branches 20π+ Wang Gen 2 packets 30π+ Kekeshan 2 packets 50ml+ water 30㎏. Kill underground pests, inhibit soil germs, restore root growth and improve plant immunity.
After transplanting 15 days or so: spray or pour with Li Lei seaweed high nitrogen fertilizer at the ratio of 1 bag 4㎏+ 750㎏, every 7 days 1 time, and promote growth and health for three times in a row. Generally, it will be put on the market 30-40 days after transplanting.
Continuous cropping can save land fertilizer: when applying base fertilizer, use 3 bags of Li Lei TD bacteria or 20㎏ Aoli bio-organic microbial inoculum per mu, put them in the transplanting ditch when transplanting, mix well with soil, and sow immediately, which can prevent seedlings from dying after continuous cropping. Because the microbial inoculum contains a large number of active and beneficial microorganisms Trichoderma, it can kill harmful bacteria in the soil, greatly reduce the mortality rate of seedlings, and has special effects on damping-off disease, root rot, gray mold and so on.
4, pest control and spraying foliar fertilizer
The main pests and diseases of onion in four seasons are root rot, rust, gray mold, damping off, onion maggots, thrips, Spodoptera litura, snails, beetles, cutworms and aphids, which harm roots, stems and leaves.
7- 10 day after planting: Phoebe 1 Bao 4 π (50% thiacloprid)+Favourite 1 Bao 6 π (40% ethiprole)+Li Lei 2000 1 Bao 15π+ high quality product 30.
65438+ 05 days after colonization: 3 π (70% acetamiprid) for chlorpyrifos/kloc-0+4 π (40% hexaconazole) for prize order/kloc-0+jikeshan 1 25ml+ 30π for high-quality products+65438 for water.
Step 5 harvest
Tillering seedlings can be harvested and sold when the plant height is 30-40㎝.
Extended data:
Nutritional value of green onions;
Onion contains protein, sugar, fat, carbohydrate, carotene, malic acid, phosphate sugar, vitamin B 1, vitamin B2, vitamin C, iron, calcium, magnesium and volatile components.
1, raw onions, like onions and green onions, contain diallyl sulfide. Diallyl sulfide can stimulate the secretion of gastric juice and help to increase appetite. At the same time, when ingested with foods with high vitamin B 1, the starch and sugar contained in vitamin B 1 will become heat, thus improving the function of restoring fatigue.
2. Onion leaves contain more vitamin A, vitamin C and calcium than onion white. Onion contains a considerable amount of vitamin C, which can relax small blood vessels, promote blood circulation, help prevent dizziness caused by hypertension, keep the brain flexible and prevent Alzheimer's Harmo's disease.
3, people who often eat onions, even if the fat is fat, but the cholesterol does not increase, the body is strong. Onion contains trace element selenium, which can reduce the content of nitrite in gastric juice and play a certain role in preventing gastric cancer and various cancers.
4. Onion contains volatile oil and capsaicin with pungent smell, which can dispel the peculiar smell in greasy and heavy dishes such as fishy smell, produce special aroma, and have strong bactericidal effect, which can stimulate the secretion of digestive juice and stimulate appetite. When the volatile capsaicin is excreted through sweat glands, respiratory tract and urinary system, it can also slightly stimulate the secretion of related glands, thus playing the role of sweating, expectorant and diuretic. It is one of the traditional Chinese medicines for treating colds.
5. Onion also has the functions of lowering blood fat, blood pressure and blood sugar. If eaten with mushrooms, it can promote blood circulation.
References:
Baidu encyclopedia-onion