Planting method of green onion:
1, applying sole fertilizer
Four-season onions like loose, fertile and disease-free soil, and fertilizer is better. Do not use immature pig, cow, chicken manure and discharged wastewater. If it is used, it will bring diseases and eggs to the soil, and plant growth will be poor, which will easily burn the roots of crops, 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 Leili seaweed fertilizer15-10-15 50 ㎏+chitin 160㎏+ Duobao/kloc-0 ㎏ or Leili/kloc-0 per mu.
2. Transplanting
Onion seedlings transplanted in March-1February have high survival rate, less dead seedlings, short slow seedling stage and rapid growth and development. Generally, seeds are not used for propagation, but are transplanted in separate plants. Before transplanting, soak the roots 10-30 minutes, and use seedling immortality 1 bottle15 π+2 branches at one nest end, 20 π+2 packets of Genwang, 30 π+2 packets of Kekeshan, 50ml+ water15.
Before transplanting, the compartments should be divided, with the width of compartment surface 1.5-3 m, the width of compartment ditch 30㎝ and the depth of compartment ditch 20㎝. Open the transplanting ditch on the compartment surface according to the row spacing of 45㎝, plant seedlings according to the plant spacing of 10- 15㎝, plant onion seedlings per mu 10000- 14000 ㎝, and plant onions every year. The planting depth is 6㎝. After transplanting, pour enough water to improve the survival rate.
3. Topdressing
7- 10 day after planting: spray it with the ratio of seedling immortality 1 bottle15 π+one nest end, 2 branches, 20 π+Genwang 2 packets, 30 π+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: use Leili seaweed to fertilize with high nitrogen 1 bag 4㎏+ water 750㎏, once every 7 days, and promote growth and health for 3 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 Leili TD bacteria or 20㎏ of Aoli bio-organic microbial inoculum per mu, put them into the transplanting ditch when transplanting, mix well with the soil, and plant seedlings immediately, which can prevent the 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 seedling death rate, and has special effects on damping-off, 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, sharp blight, onion maggots, thrips, Spodoptera litura, snails, beetles, cutworms and aphids, which harm roots, stems and leaves.
7- 10 days after colonization: Bifei 1 Bao 4 π (50% thiacloprid)+Chong 'ai 1 Bao 6 π (40% etofenol)+Raleigh 2000 1 Bao15.
After colonization 15 days: Zhi Zhi Bi Ling 1 Pack 3 π (70% acetamiprid)+Commendation Order 1 Pack 4 π (40% hexanazolyl alcohol)+Extremely good 1 Pack 25ml+ Fine high nitrogen 30 π
5. Harvest
Tillering seedlings can be harvested and sold when the plant height is 30-40㎝.
Extended data:
Nutritional value of scallion;
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 scallions, 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 fatigue recovery.
2. The onion leaf contains more vitamin A, vitamin C and calcium than the onion white. Onion contains a considerable amount of vitamin C, which can relax small blood vessels, promote blood circulation, help prevent dizziness caused by high blood pressure, keep the brain flexible and prevent Alzheimer's disease.
3, people who often eat onions, even if the fat is fat, but the cholesterol does not increase, and the body is strong. Onion contains trace element selenium, and can reduce the content of nitrite in gastric juice, which has a certain effect on 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 thick dishes such as fishy smell, produce special aroma, and have strong bactericidal effect, which can stimulate the secretion of digestive juice and increase appetite. Volatile capsaicin can also slightly stimulate the secretion of related glands when it is excreted through sweat glands, respiratory tract and urinary system, thus playing a role in sweating, eliminating phlegm and diuresis. 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 it is eaten with mushrooms, it can promote blood circulation.
References:
Baidu Encyclopedia-Onion