Spring cabbage is a kind of vegetable with a large planting area in our province. This vegetable has the characteristics of less investment, labor saving, and high yield in production. Right now, the spring cabbage breeding season again, below, introduce the relevant technical points.
First, choose the best kind of cold shed cultivation in early spring can choose strong cold resistance, strong disease resistance, strong winter varieties, such as selected 8398, spring strong and other varieties. Planting in the open field in the spring can use Zhonggan 15, Shuanghuan 15, Zhonggan 21 and other early-maturing, high-yield and disease-resistant varieties.
Second, the preparation of seedbed nursery bed soil to choose fertile soil, last year did not grow cruciferous vegetables pastoral soil, to give full maturity of the farmyard fertilizer to match the amount of ternary compound fertilizer. Before sowing, 50% of methine WP can be used to completely sterilize the seedbed, and the dosage per square meter is about 10 grams.
Third, timely sowing spring cabbage suitable sowing date in late December to mid-January, more use of greenhouse nursery or improved Yangshuo nursery. For early maturing varieties, the average planting density is 4,500 to 5,000 for acre, 3,500 to 4,000 for mid-maturing varieties, and 50 grams for mu. Before sowing, the seeds generally do not need to be germinated and the seeds can be broadcast live. Seedlings pods were first poured into foot water, and cabbage seeds were sown uniformly. After sowing, the soil was covered with sieved soil and the seedlings were cracked.
4. Before the emergence of seedbed management, the temperature of the greenhouse or Yangshuo must be maintained at 15°C to 25°C. Generally, the seedlings can be produced after 5 days of sowing. At this time, it is necessary to pay attention to the gradual release of air in a timely manner to maintain the temperature at 10°C to 20°C. If the seedlings are too dense, the seedlings need to be carried out in order to prevent the seedlings from becoming leggy. When the seedlings grow to three true leaves (mid-mid-February), a sub-seedling will be carried out. The seedlings will be transplanted into the nutrient bowl. The temperature of the seedbed is generally controlled at 8°C to 20°C, and the seedlings are planted in March. Before the time, it is possible to carry out the low-temperature "refining seedlings" and gradually increase the amount of air release. The minimum temperature of the seedbed can be gradually reduced to about 5°C, and the time for hardening seedlings is about one week. Afterwards, they are planted according to their cultivation mode and weather conditions.
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