The latest planting method of leek

Leek yellow is a perennial herb of lily family. It is a yellow product after softening cultivation of leek. It is also called leek bud, yellow leek bud, leek white, etc. It produces isolated light and grows completely in the dark. Because there is no sunlight supply, it cannot carry out photosynthesis and synthesize chlorophyll, which will turn yellow. Let's take a look at the planting method of leek yellow together!

seed treatment

1. Variety selection: Huangjiu No. 1, 791 Xuejiu Wang, Xuejiu No. 4 and other varieties suitable for cultivation in China can be selected.

2. Selection of plot: For leek cultivation, fertile land and convenient irrigation and drainage conditions should be selected, but continuous cropping land or onion and garlic stubble land should be avoided as far as possible.

3. Seed treatment: soak seeds in water not exceeding 53℃, water is not easy to be too much, soak for more than 10 hours and then dress seeds with 2~3‰ carbendazim dry and wet powder for later use.

soil preparation

1. Nursery beds: 2.5 jin per mu, 3 square meters per dual-purpose seedbed, 75 square meters per mu seedbed. Seedling bed width 1~1.4 meters, soil preparation without or less fertilizer, deep turning about 30 cm, turning with claw groove block flat, wear flat shoes to step flat, and then block flat type.

2, planting ridge: leek seedling planting ridge to dry land, dry ridge trenching watering. The planting ridge runs from east to west, with wind barriers on the north and west sides. The ridge is 2.2m wide and 30m long. The distance between two ridges is 1.4m. Every two ridges have wind barriers, and the wind barriers are 1.5m high.

Planting preparation

1. Seedling: The seedling time of leek yellow is about April 15 every year. Before seedling raising, the prepared seedling bed will be watered thoroughly, seed will be evenly dressed with carbendazim, and then 5% phoxim granules will be sprayed.

2. Cover film: after sowing leek seeds, cover them with sieved topsoil 0.5~1 cm and then immediately flatten them, spray grass net (a pesticide that has no effect on the growth of onions and garlic), cover the film, and compact them with soil on both sides.

3. Topdressing: Remove the plastic film when 80% of the leek seedlings are outcropped, irrigate once 5~7 days before and after growing to five leaves, apply urea 7.5~12.5 kg with water twice per mu, and stop watering 5~7 days before transplanting.

colonization management

1, timely whole ridge: leek planting from June 25 every year around the beginning, focus on the ridge soil humidity moderate. Dried land is tidied up, ditched and watered for planting. Wet soil preparation, soil hardening, poor ventilation, new roots difficult to grow.

2. Apply enough base fertilizer: apply 10,000 jin of farm manure per mu, apply 20 kg of biological fertilizer, 20 kg of urea or diammonium, 150 kg of calcium superphosphate, 35 kg of potassium sulfate, fully mix the fertilizer soil evenly, the soil is loose, the soil is moderate, and the soil surface is flat.

3. Transplanting in time: When leek seedlings grow to 4~5 leaves and are about 20 cm high, they can be transplanted according to reasonable density, planting depth should be appropriate, watering should be appropriate, and medication should be appropriate.

4. Reasonable close planting: the planting width of leek yellow is 2.2 meters, when transplanting, the row spacing is 30 cm, the plant spacing is 5 cm, leek yellow has high yield and high quality, and it can still have high and stable yield without reversing the ridge for 4~6 years.

6. Proper depth: special attention should be paid to the depth of transplanting leek seedlings. The seedlings are planted too deep, the tillers are late and few, the growth is not prosperous in the future, and the planting is too shallow and easy to disperse. Depending on the size of the leek seedlings, determine the depth of the planting ditch.

7. Appropriate application of drugs: After planting leek seedlings, apply 5% phoxim granules and 25% carbendazim wettable powder on leek roots, 2.5 kg per mu, and then cover with soil. Spray once 5~7 days after planting.

8. Timely watering: after transplanting leek seedlings, immediately irrigate thoroughly, hoe and preserve moisture, so that the ridge surface is dry and not wet. After a large number of new roots grow out, irrigate two times according to the dry and wet condition of the ridge surface.

9. Fertilizer and water management: leek grows all the year round and requires a large amount of fertilizer. According to different cultivation purposes and growth characteristics of different periods and the demand for water and fertilizer, fertilizer and watering should be reasonably applied, promoted and controlled, and flexibly applied.

bingchong prevention

1. Gray mold: Gray mold mainly harms leaves. When a small number of plants are found to be diseased, spray 50% Sukeling or 50% Prohydantoin 1000 times solution, or use 50% carbendazim WP 500 times solution to control it.

2. Epidemic disease: epidemic disease can harm rhizomes and leaves, and the more serious the disease is when the humidity is high, if it is found, it should be sprayed with 50% metalaxyl copper 600 times solution or 64% antivirus alum 400 times solution every 7~8 days, spraying for 2~3 days is better.

3. Verticillium wilt: Verticillium wilt can harm leaves, make leaves yellow and droop, and gradually die. When the disease occurs, spray 50% carbendazim 500 times solution or 70% mancozeb 500 times solution.

4. Allium maggot: ground spraying is used to control Allium maggot, that is, 2.5% trichlorfon powder is sprayed along the ridge during the adult peak period, 2~ 2.6kg is sprayed per mu, or 40% phoxim emulsifiable solution 1000 times is sprayed at 9:00 ~11:00 in the morning.

5. Leaf miner: To control leaf miner, spray 75% cypromazine 5000~7000 times solution, or 2.5% cypermethrin, 20% fenvalerate or other pyrethroid pesticides 1500~2000 times solution from the peak spawning stage to the early stage of larva hatching.

6. Thrips control: spray 50% phoxim 1000 times solution, or 10% pyrimidone 4000 times solution, or 3% pyrimidine 3000 times solution, or 2.5% cymbidium bromide and other pyrethroid pesticides 1500~2500 times solution at the peak of larva occurrence.