How to grow yellow chives with soilless culture? Latest technique method tutorial

Keep the chive roots under suitable temperature, humidity and dark conditions, and under conditions where chlorophyll cannot form, produce tender and delicious chive plants with good flavor, pale yellow color and very little cellulose, namely yellow chives. Adopting factory-style soilless cultivation of yellow chives can save space, reduce pests and diseases, and improve production efficiency. Now let us take a look at yellow chive soilless cultivation techniques!

Cultivation facilities

1. The sites for factory-style production of softened vegetables such as yellow chives are generally solar greenhouses, plastic tunnels, large warehouses, etc., but no matter what facilities are used, the outer layer must be covered with lightproof covering. Solar greenhouses and plastic tunnels use black plastic film on the outside, with lightproof non-woven fabric added inside for covering. The doors and windows of warehouses and houses are all blocked from light with lightproof door curtains, and production is carried out under lightless conditions.

2. The cultivation environment requires certain temperature conditions. If year-round production is desired, heating facilities such as warm air furnaces, radiators, and electric heating should be installed in the facilities in winter. In summer, electric ventilation devices should be used to force cooling so as to maintain suitable temperature conditions. Automatic sprinkler irrigation facilities should be installed to regularly supply the water needed for growth and development. In order to make full use of space, cultivation racks are built inside the facilities.

3. The cultivation racks are welded from angle steel, 1.5-2 m high, 50-60 cm wide, and 1-1.5 m long, divided into 4-5 layers, with each layer 40-50 cm high. The cultivation racks are placed in rows inside the facilities, with walkways left between the racks. On the cultivation racks, 4-5 layers of cultivation boxes are placed.

4. The cultivation boxes are open boxes made of plastic, 20-25 cm high, 40 cm wide, and 50-60 cm long. There are holes in the bottom of the boxes for drainage. In the cultivation boxes, 10-15 cm thick light substrates such as peat, vermiculite or perlite are placed.

Rootstock cultivation

1. Rootstock: Cultivate rootstock in open fields. Generally, robust 2-year-old rootstock is selected, and only 1-2 cuts of green chives are harvested in the open field, so that the rootstock accumulates more nutrients, which is beneficial for increasing the yield of yellow chives.

2. Fertilization: Before harvesting green chives, apply a heavy dose of decomposed human excrement and urine once, and add a small amount of urea as base fertilizer to enrich the rootstock.

3. Planting: The chive rootstock is planted in cultivation boxes, and the cultivation boxes are filled with substrate. After planting, water, and place the cultivation boxes on the cultivation racks.

4. Watering: After the chive roots are planted, immediately shade them in the facilities, and maintain the temperature at about 20°C during the day and about 15°C at night. Water once every 2-5 days to keep the substrate moist.

5. Nutrition: After the chive roots emerge, apply nutrient solution once every 10-15 days. The nutrient solution is 0.2-0.3% multi-element compound fertilizer solution or 0.3% urea solution.

6. Harvest: After the chive roots are planted, they can be harvested and marketed successively after 20-30 days. Yellow chives are generally harvested by cutting.

Pest and disease control

1. Gray mold: Gray mold mainly harms leaves. When a small number of plants are found to be diseased, spray with 50% procymidone or 50% iprodione 1000-fold solution, or use 50% carbendazim wettable powder 500-fold solution for control.

2. Phytophthora blight: Phytophthora blight can harm roots, stems and leaves. The higher the humidity, the more severe the disease. If found, spray with 50% metalaxyl-copper 600-fold solution or 64% oxadixyl-mancozeb 400-fold solution, once every 7-8 days, preferably spraying for 2-3 days.

3. Verticillium wilt: Verticillium wilt can harm leaves, causing them to yellow and droop, and gradually die. When the disease occurs, spray with 50% carbendazim 500-fold solution or 70% mancozeb 500-fold solution.

4. Chive maggot: To control chive maggot, use ground spraying, that is, during the peak adult emergence period, broadcast 2.5% trichlorfon powder along the rows, 2-2.6 kg per mu, or spray 40% phoxim emulsifiable concentrate 1000-fold solution from 9 a.m. to 11 a.m.

5. Leafminer: To control leafminer, from the peak egg-laying period to the early larval hatching stage, spray 75% cyromazine 5000-7000-fold solution, or 2.5% deltamethrin, 20% fenvalerate or other pyrethroid pesticides 1500-2000-fold solution.

6. Thrips: To control thrips, during the peak larval occurrence period, spray 50% phoxim 1000-fold solution, or 10% imidacloprid 4000-fold solution, or 3% acetamiprid 3000-fold solution, or 2.5% deltamethrin and other pyrethroid pesticides 1500-2500-fold solution.