How can greenhouse leek be managed skillfully to increase benefit?

Due to the needs of the market, leek in greenhouse has been planted in more and more places in recent years, so how can greenhouse leek be skillfully managed to increase efficiency?

Preparation of leek in greenhouse before buckling shed

1. Clear the bed

Generally, the aboveground parts of leek will wither in the first and middle of November, and different regions and different leek varieties will be slightly different. After the aboveground parts have withered completely, the withered leaves and weeds in the leek border will be cut and cleaned up.

2. Pick the pier

After clearing the border, the topsoil above the leek bulb was dug out and exposed to the bulb, which was frozen in the sun and night to break the dormancy early, make the leek neat and tidy, and eliminate the pests that sneaked into the leek pier for the winter. Be careful not to hurt the root when you pick the leek.

3. Disinfestation

The biggest problem with continuously growing chives is chives maggots. After a week, 50% phoxim EC is used to irrigate the roots of 80 kilograms of phoxim EC, which can prevent the harm of leek maggots.

4. Fertilization

After 3-4 days of root irrigation, furrow-to-row fertilization should be made, when organic and inorganic fertilizers should be supplied in large quantities at the same time.

5. Flat land watering

Cover the soil after fertilization, the soil surface is flat with the leek pier, then water, cover the soil to sink, and then cover a layer of fine soil to bury the leek pier.

Second, the management after the leek buckles in the greenhouse

1. Fertilization

After watering and covering the soil for about 2-3 days, after the soil becomes loose, you can buckle the shed and choose the number of layers according to the local climate. About 20-30 days after buckling the shed, the first crop of leek can be put on the market. 2-3 days after harvest, the leek grows to about 2-3cm. Quick-acting fertilizer should be used to supplement fertility, and the second and third crops should be operated in the same crop.

2. Prevention and control of diseases

After the leek buckle shed, the humidity increases and the probability of Botrytis cinerea increases, so attention should be paid to ventilation. Use 10% tofu fumigant 260g to 300g per mu, light it separately, close the shed and fumigate overnight. Or spray propofol and isobarbazide to treat gray mold, spray once every 7 to 10 days.

Leek maggot is also the peak of harm, according to the incidence, the treatment of leek maggot can choose the following drugs: phoxim, Beauveria bassiana, veratrine, cyhalothrin and other drugs, root irrigation. The leek was irrigated with phoxim at a concentration of 1000 times the concentration of phoxim.

For bacterial diseases, streptomycin, octylamine, mesophytin, thiazol copper, thiosen copper, quinoline copper, butazole and allicin can be used.

III. Management of spring leek in greenhouse

After 2-3 crops of leek production, the whole leek is in a state of nutritional deficit. In order to ensure the production of leek at the beginning of next spring, we must make up for the deficit. Therefore, at the end of winter production or the beginning of spring, organic and inorganic fertilizers should be supplemented to ensure the growth of leek in spring, and the production of leek in spring is basically consistent with that in winter. After 2-3 stubble, leek entered the root maintenance stage in summer.