1) Variety selection: The varieties that adapt to spring Chinese cabbage cultivation are spring generals and spring crowns.
(2) Sowing seedlings: Chinese cabbage seedlings can pass vernalization at 15°C for 15-20 days, resulting in premature bolting. Adding a small shed in a greenhouse can increase the temperature of Chinese cabbage seedlings, making the temperature above 5°C without vernalization, and solve the problem of early bolting.
(3) Soil preparation and fertilization: There are more rains in spring, and top dressing is often inconvenient. Therefore, the basal fertilizer must be replanted.
1 Base fertilizer: Generally, 667 square meters can be used for 5 to 7.5 tons of decomposed farmyard fertilizer, 100 kg of plant ash, 25 kg of superphosphate or 100 kg of high-quality compound fertilizer, and 30 kg of potassium fertilizer. Combine tillage process to mix well with soil.
2 畦 畦 畦 以 以 以 以 以 以 以 以. Generally, 25 cm in height and 80-120 cm in width (without soil ditch) are used to plant 3-4 plants.
(4) Proper close planting: Chinese cabbage is cultivated in the spring. Due to the short time, the plants should be densely planted. Generally, the plant spacing is 3,530 cm.
(5) Field Management:
1 cultivating and weeding: Usually, water is poured after planting and the roots are raised to raise the seedlings. In the course of watering or raining, the cultivator is timely cultivated to prevent ground panel knots, promote soil permeability, and remove weeds. Avoid planting wounds.
2 Water and fertilizer management: In the spring, water management is mainly to pay attention to drainage and stain prevention. Rosette period: generally topdressing manure excrement 2.5 tons and urea 10 kilograms. Knocking period: The focus is on the beginning and middle period of the ball. Both of these fertilizers should be applied with quick-acting fertilizers and applied early. Generally, the fertilizer is immediately applied when the center of gravity is started, and the fertilizer is topdressed once after being pumped, and 20 kg of potassium fertilizer is used in combination.
3 Pest control: The diseases of spring cabbage are mainly soft rot and downy mildew. Insect pests mainly include cabbage caterpillars and aphids, which can be controlled by reference to pest control techniques.
Curcumin,Curcumin 95%,Turmeric Supplement,Turmeric Extract
Shaanxi Zhongyi Kangjian Biotechnology Co.,Ltd , https://www.zhongyiherbs.com