The planting method and time of tribute vegetables should not be harvested too early or too late.

Seed soaking to promote germination: select seeds with high yield, high quality, disease resistance and stress resistance, put them in cold water for 3-4 hours before sowing, and then wash and germinate in 10% trisodium phosphate for 20 minutes. Soil preparation and sowing: select the slightly alkaline sandy soil with fertile and strong water and fertilizer conservation capacity, and cover the seeds with a thin layer of soil to keep the soil moist. Management: reasonable intercropping, regular watering, scientific topdressing, active weeding. Timely harvest: the outer leaves and heart leaves of the plant should be harvested at the same time, not too early or too late.

Planting time of tribute vegetables

Gongcai is an annual herb, which is usually planted around Ching Ming Festival or about the tenth day after the Beginning of Autumn. The gong dish has a bright appearance, good taste and high edible value. It is a kind of high-grade dehydrated vegetable in our country, because it attacked Qianlong in the Qing Dynasty, which was highly praised by Qianlong, and then paid tribute every year, hence the name tribute vegetable.

The planting method of tribute vegetable

1. Soaking seeds to accelerate germination

Select Gongcai seeds with high yield, high quality, disease resistance and strong stress resistance, soak them in cold water for 3-4 hours before sowing, then soak them in 10% trisodium phosphate solution for 20 minutes, remove them, rinse them with clean water and accelerate germination. The optimum temperature for Gongcai germination is 15-20 ℃. The sterilized seeds are wrapped in gauze and put into a 15-20 ℃ incubator and washed once a day. Generally, the seeds can be sown after about 3 days of exposure.

2. Soil preparation and sowing

Gongcai has a strong ability to adapt to the environment, its growth ability is strong, it is best to choose fertile, water and fertilizer conservation capacity of semi-alkaline sand soil to improve the yield and quality of Gongcai. After selecting the suitable land, carefully check whether there are any pesticide or herbicide residues, if found to clean in time, in order to avoid drug damage caused by tribute vegetables. Carry out soil preparation and fertilization in order to improve soil fertility and reduce the incidence of Gongcai, dig planting holes in the land according to reasonable planting density, plant into holes, cover the seeds with a thin layer of soil, and sprinkle some water to keep the soil moist.

3. Daily management

The seeds of Gongcai are small, the ability of top soil is poor, and the speed of seedling emergence is slow. it is necessary to ensure that the border is moist to facilitate seedling emergence. Generally, it is necessary to water the border once a day in the morning and evening to ensure that the soil is moist and covered with a layer of straw to keep the soil moist. After planting and emergence, the straw is taken away in time. When the cotyledons are flat, the first seedling is carried out, and the plant spacing is controlled at 3-6cm. When the seedling has 3 true leaves, the second seedling is carried out. The distance between plants and rows is controlled at 15-18cm When the seedlings had 3-6 true leaves, the seedling distance was 20-25cm square, and the planting density was 2-23000 plants / mu. After fixing the seedlings, watering regularly, topdressing and weeding were carried out to ensure the growth and development of tribute vegetables.

4. Timely harvest

In order to ensure the quality of tribute food, it should be harvested at the right time. If the harvest time is too early, it will affect the yield, if the harvest is too late, it is easy to form a hollow, crude fiber increases, resulting in a decline in quality. In general, the best time to harvest tribute vegetables is that the outer leaves and heart leaves of tribute vegetables are flat, but because of different regions, the harvest time should be adjusted according to the planting area.