How to grow the latest Qingdai?

Qingdai is also called song blue, blue dew, horse blue, polygonum blue and so on. It is a plant of the family Polygonaceae. Qingdai is also an excellent traditional Chinese medicine, which is often used for heat-clearing and detoxification, cooling blood and eliminating spots, and purging fire to calm down shocks. of course, it also has a certain industrial function, which can be used for printing and dyeing, and secondly, it is also excellent for thrushes. So how does Qingdai usually grow? Now let's learn how to grow it.

1. Land selection and preparation

Qingdai is very useful to the environment, and it can be planted in most parts of our country, and it is also widely planted in our country, such as Jiangsu, Zhejiang, Liaoning, Hebei, Xinjiang and other places are the main producing areas of Qingdai. So when choosing the planting land of indigo indigo, we try to choose the sunny, good drainage, loose soil and sufficient soil fertility to plant in the sandy loam. Try to turn the soil more than 30 centimeters deep, and the soil is fine, the ground is raked flat, re-apply base fertilizer, the base fertilizer is mainly circle fertilizer, turn into the soil and mix well. Finally, according to the different topography of the planting area, make flat or high beds, open a good ditch, dry the soil, and sow seeds when the surface is relatively dry.

2. Scientific sowing

Indigo seeds should choose high-quality seeds free from diseases and insect pests. Before sowing, we need to soak the seeds in warm water with a temperature of about 30 degrees, stir constantly in the process of soaking, remove them after soaking for three or four hours, drain the water, and mix them evenly into the fine soil to sow the seeds. Qingdai can generally be planted in two seasons, namely spring sowing and summer sowing, and the sowing is usually carried out by strip sowing or sowing. The spacing between rows of strip sowing is about 20 centimeters. Evenly sow the seeds and cover a thin layer of soil. Under normal circumstances, seedlings emerge in about a week.

3. Field management

Wait until after emergence, we should carry out appropriate shallow ploughing, and combined with weeding, in the process of weeding, do not press the soil to the seedlings. When the seedlings grow to about five to ten centimeters, pull out the weak seedlings that are too dense in the field, interplant and uniform seedlings appropriately, and the distance between plants is about ten centimeters. After planting, it is necessary to carry out intermediate ploughing and weeding, and reasonable watering and fertilization. Generally speaking, the number of fertilization is about three to four times a year, and watering is usually two to three times, while weeding and loosening the soil need to be carried out frequently. The most fertilizer is mainly circle fertilizer, combined with the use of potash fertilizer and phosphate fertilizer.

4. Disease and pest control

There are still many pests in Qingdai, so we should be very serious and careful in the process of planting and do a good job in the prevention of diseases and insect pests. Among them, the main diseases are white rust, black spot, gray spot, Sclerotinia sclerotiorum, downy mildew and powdery mildew, which can be controlled by Bordeaux solution, Dysen zinc, methyl thiophanate and Fumei zinc wettable powder respectively. Secondly, it is the most harmful to pests such as small bridge-building insects, vegetable powder butterflies, pea leaf miners and so on. We can use low-toxic insecticides such as deltamethrin, dimethoate and trichlorfon to prevent them.

The above is the planting method of indigo. I believe you should also have a new understanding of the planting of indigo. Here, the editor just briefly introduces the planting method of indigo and its pest control, many detailed problems, and no detailed analysis, if you are interested, you can follow us, or leave a message for the editor.