Time and method of planting Chinese cabbage

Planting method: the growth period of Chinese cabbage is short, the root system is shallow, about 1500-2000 kg of mature organic fertilizer should be applied per mu before planting, and then sown by seedling transplanting, direct seeding, strip sowing and so on. Fertilizer should be applied after planting, fertilizer should be applied after each harvest, and weeds should be weeded in time. The growth process of Chinese cabbage needs a large amount of water. If there is no rain, it should be watered every 7 days. Planting time: generally sowing in March, or from early August to mid-early September.

First, planting time

The main results are as follows: 1. Generally, the seeds are sown in March and early August to the first and middle stages of September every year, and the quality of cabbage heart planted in this period is better.

2. The suitable temperature for heart germination and seedling growth is about 25-30 ℃, and the suitable temperature for leaf growth and bolting formation is about 15-20 ℃. Planting time can be selected according to different regions and seasonal climate.

2. Selection of varieties

At present, there are many varieties of Chinese cabbage, such as green cabbage, willow leaf cabbage, Chinese cabbage, 49 cabbage, red cabbage, and so on. We can choose varieties to be planted according to sowing time, market demand, and local climate. For example, early and medium-ripe varieties 60 days Teqing can be on the market in about 60 days, and 49 Chinese cabbage hearts can be on the market in about 35 days.

Third, sowing method

The main results are as follows: 1. The growth period of Chinese cabbage is relatively short, the root system is relatively shallow, and the absorptive capacity is poor, so it is necessary to apply sufficient base fertilizer, about 1500-2000 kg of rotten organic fertilizer per mu.

2. Chinese cabbage can be transplanted by direct seeding, strip sowing and seedling raising, and the transplanting can be carried out according to the row spacing of about 30-35cm and the plant spacing of about 20-25cm.

3. Direct seeding: first, spread seeds evenly on the whole ground, wait until seedling emergence, and then carry out inter-seedling and supplementary seedling. You can carry out inter-seedling according to row spacing of 20-30cm, and leave two seedlings per plant.

4. Strip sowing: according to the row spacing of about 30 cm, dig a ditch with a depth of about 3-5cm and a width of about 10cm, and then evenly sow seeds in the ditch and cover the soil. After emergence, you can replenish and interplant seedlings according to the spacing of 25cm.

IV. Field management

1. After planting, Chinese cabbage should strengthen its management, fertilize, water and weed in time, which is more beneficial to its growth.

2. Fertilization can be carried out after planting, topdressing can be carried out at the beginning of cabbage heart formation, and fertilizer should be applied after each harvest. In order to reduce nutrient loss, it can be combined with weeding, which is beneficial to nutrient absorption and utilization.

3. Chinese cabbage needs a large amount of water in the growth process, and the field moisture needs to be kept at about 70%. If there is no rain, it needs to be watered every 7 days or so, and drainage should be carried out in time in the rainy season.

V. Prevention and control of diseases and insect pests

The main results are as follows: 1. Chinese cabbage has better resistance and less disease. the main pests are leaf rollers, vegetable aphids and cabbage moth, which can be controlled by trichlorfon or dimethoate milk.

2. In order to ensure the quality of Chinese cabbage, do not apply pesticide about 15 days before harvest, so as to avoid drug damage.