Watering times of autumn cabbage-Baidu

1, cooling water is poured at seedling stage.

After the seedlings are fully grown, the second thinning is carried out at the true leaf stage, with 2-3 pieces of thinning. Leave 8- 10 plants at a time and 3-5 plants until 6-8 leaves are planted in real time. The time to sow seedlings depends on the weather. In the years of high temperature and drought, seedlings should be planted late to cover the ground, reduce the ground temperature and reduce the occurrence of virus diseases.

In low temperature and rainy years, seedlings should be set early, let the seedlings evacuate, receive more sunlight and stretch as much as possible. The following principles should be mastered in thinning seedlings: leave strong seedlings for weak seedlings, middle seedlings for long seedlings, right seedlings for variegated seedlings and good seedlings for eccentric seedlings.

Seedlings without growing points. If it is a hot season at this time, it is necessary to water the soil once, reduce the warm water, apply 4-5 kilograms of urea with the water, and water it once in the morning and evening.

2. Water the seedlings.

When Chinese cabbage grows to 6-8 true leaves, seedlings should be fixed. The soil of seedling root is active due to intermittent seedling pulling, so water should be poured once in time to prevent and avoid root injury caused by ventilation, which is beneficial to the robustness and development of root system.

3, a small amount of water should be poured during the rosette period.

When Chinese cabbage grows to the rosette stage, it is necessary to "squat seedlings" and stop watering in about 10 days before it can be wrapped. This will promote the root system to develop in depth and absorb more water and nutrients, which will be beneficial to the robust growth of Chinese cabbage, hypertrophy of leaves and increase yield. The average squatting time is 7- 10 days. During this period, it was observed that Chinese cabbage wilted at noon, normal in the morning and evening, the color changed from light green to dark green, and the soil water content was about 16%. Don't squat.

Watering should master the principle of "seeing dry and seeing wet", ensure that lotus leaves promote growth and control dry, and the length of time should be determined according to the specific conditions such as variety, soil quality and climate, so as to avoid excessive dry squatting and squatting. At this time, we should cultivate more, not dry or water.

4, extubation, water into the heart.

The Chinese cabbage is watered once at the initial stage of grouting and twice every 2-3 days. Keep the soil moist in the future, and generally water it once every 5-7 days. Stop watering before harvest 10 day.

From this point of view, Chinese cabbage needs to be watered four times in the process of growth management. In order to achieve high and stable yield of Chinese cabbage, attention must be paid to the prevention and control of pests and diseases at seedling stage.

Extended data:

Key cultivation techniques of Chinese cabbage in autumn and winter;

1. Variety selection: according to different supply periods and market periods, select early, middle and late maturing varieties for reasonable collocation. Early-maturing varieties should be Zaoshu 5, Xiaoza 56, Bai Lu 6 and Huaibai 6. Kang Feng 70, Kang Feng 80, etc. Medium-mature varieties should be selected. Late-maturing varieties should be Bai Lu 20, Shandong 5 and Jinza series.

2. Land selection and soil preparation: select a place with fertile soil, convenient irrigation and drainage, close to the village and not easy to be hurt by livestock. Before sowing, cut off the rice pile, dig deep into the soil, and then open the warehouse according to 4-5 feet for soil preparation. Combined with soil preparation, apply 30-40 kilograms of compound fertilizer, human excrement and urine10-5 tons or biogas slurry fertilizer.

3. Suitable sowing date: The suitable sowing date in our county is around beginning of autumn, and direct seeding or seedling transplanting can be adopted. Generally, it is best to directly sow early and middle-maturing varieties, and it is best to seedling and transplant late-maturing varieties.

Baidu encyclopedia-Chinese cabbage