Can the cabbage in Changling County of Jilin Province be cut in early winter?

1. Cabbage in Changling County of Jilin Province can be harvested in early winter.

Chinese cabbage is sown after corn harvest in autumn and harvested in early winter.

Second, the cultivation techniques

1, farming season

Early-maturing varieties are usually sown in early and middle August, and some are sown in late July. Medium-mature varieties can be sown from late August to early September. Late-maturing varieties should be sown in late August.

2. Land selection and land preparation

Continuous cropping of Chinese cabbage is prone to diseases, so it is necessary to implement crop rotation, especially to advocate grain-vegetable rotation and paddy-upland rotation. In the cultivation of perennial vegetables, continuous cropping with cruciferous vegetables should be avoided, and early beans, early peppers, early cucumbers and early tomatoes can be selected for cultivation. The field for planting Chinese cabbage should be deeply ploughed on the kang of 20-27 cm for 10- 15 days, and then the field should be broken and leveled to make a border with a width of 1.3- 1.7 meters or a narrow border with a height of 0.8 meters. When making the border, it is necessary to dig deep into the border ditch and waist ditch, and surround the ditch more than 27 cm to connect the ditches.

3. Re-apply base fertilizer, mainly organic fertilizer.

In the middle and late July, after the early harvest, dig deep into the heatable adobe sleeping platform, and sprinkle lime100-150kg per mu during soil preparation. In the plot where clubroot occurs, appropriate amount of lime should be applied in the sowing ditch. It is required to re-apply base fertilizer and mix nitrogen, phosphorus and potassium evenly. In early July, 40 tons of pig manure, 40-50 tons of garbage, 75 kilograms of dried vegetables, and 40-50 kilograms of calcium, magnesium and phosphorus were mixed and stirred evenly, and 30-40 tons of human excrement and urine were added, soaked in appropriate amount of water, fermented in a heap, and covered with plastic film to fully decompose it. Ditch and apply it when making a boundary. At the same time, apply10-15kg 45% compound fertilizer per mu.

Step 4: Sowing.

Generally, direct seeding is adopted for Chinese cabbage, and seedlings can also be transplanted. Live broadcast is mainly based on strip broadcasting, supplemented by on-demand broadcasting. When the previous land is temporarily unavailable, in order not to affect the farming season, seedlings can also be transplanted. Either way, the soil must be fine and smooth. The amount of seed used for direct seeding is about 200 grams per mu. The seedling transplanter needs a seedbed of about 5-6 cm per 65,438+0 mu of land, and the seeding method is often used, and the seed consumption is 75-65,438+000 grams. After the live broadcast, use 40-50 loads of decomposed human excrement and urine per mu to cover the ground. After that, water 1 time every morning and evening to keep the indigenous soil moist, and seedlings can emerge in 3-4 days. The row spacing and plant spacing of Chinese cabbage should be determined according to different varieties. Generally, early-maturing varieties are 33-50×33 cm, with 2 100-2300 plants per mu, and late-maturing varieties are 67*50 cm, with less than 2000 plants per mu. It is best to choose cloudy or sunny evening for seedling raising and transplanting. In order to improve the survival rate, it is best to transplant seedlings with soil and water them with fixed roots after planting.

5. Tian Tuan management

(1), thinning: when there are 2-3 true leaves, the first thinning is carried out; The second seedling has 5-6 leaves; 7-8 leaves can be planted. Choose different row spacing according to different varieties, and leave 1 strong seedlings in each hole. Weeding can be combined with thinning.

(2) Topdressing: After the cabbage survives, topdressing can be started. Top-dressing 1 times 15% decomposed human excrement and urine every 3-4 days, and the dosage is 4-5 loads per mu. According to the weather and the dry and wet conditions of the soil, fertilizer should be mixed with water. When Chinese cabbage enters the clumping stage, the fertilizer concentration should be increased. Usually, 30% decomposed manure should be applied every 5-7 days, with the dosage of 15-20 tons per mu and 75- 100 kg of dried vegetables or hemp. After packaging, topdressing and potash fertilizer should be applied again to increase production. 30-40 loads of 50% decomposed human manure can be applied per mu, and plant ash 100 kg or potassium sulfate 10- 15 kg can be applied as topdressing in furrow. This time, vegetable farmers are called "stuffing the heart". After vegetation plants are closed, topdressing is generally not needed. If the base fertilizer is insufficient, urea can be applied between rows as appropriate.

(3) Intertillage: In order to facilitate topdressing, loosen the soil and weed for 2-3 times in the early stage. Especially after the long rain clears up, the kang land should be cultivated in time to promote root growth. In the middle of the rosette stage, cake fertilizer was applied to the border to fertilize the soil, and the ridge height was 10- 13 cm. The main purpose of ridging is to facilitate fertilization and watering and reduce diseases. After the cultivation, the manure should be poured into the border, and the leaf label should not be attached; Water is poured into the ditch to avoid soaking the stump. At the same time, the air circulation in the ditch is maintained, so that the air humidity between plants is reduced. This can reduce the occurrence of soft rot.

(4) Irrigation: Chinese cabbage should be watered lightly and frequently at seedling stage to keep it moist; Intermittent irrigation in rosette stage, see dry and wet, and properly practice seedlings; High water content is required when pelletizing, and furrow irrigation can be used when soil is dry. Irrigation should be carried out in the evening or at night after the ground temperature drops. Fill in slowly, don't fill the border. After water seeps into the soil, the remaining water should be discharged as soon as possible. Make sure there is no water in the ditch, no water on the sides and no water shortage at the roots. Generally speaking, keeping the soil moist is one of the keys to high yield of Chinese cabbage from the end of heading stage to the middle stage.

(5) Mulching with threshing leaves: It is an inevitable law for Chinese cabbage to grow and develop without threshing leaves. However, if late-maturing varieties encounter severe cold, in order to promote good fruit and delay harvest supply, the outer leaves are lifted after light snow, tied with straw and covered with a straw-type agricultural film, which can not only protect the heart leaves from freezing damage, but also soften the heart leaves. Early-maturing varieties do not need bunching leaves and covering.