Control methods of common diseases and insect pests in Tianqi

Tianqi, also known as Panax notoginseng, is a kind of Chinese herbal medicine in China, which has the effect of dispelling blood stasis and hemostasis, reducing swelling and pain, tonifying blood is the best of Chinese herbal medicine, and the taste of ginseng is the same as ginseng, so it is named Panax notoginseng. So what kind of diseases and insect pests will there be when planting Tianqi? Let's take a look at the detailed introduction.

1. Blight

Rhizoctonia solani is the most common disease of Tianqi, it is a kind of fungal disease, which mainly harms seeds, buds and seedlings, seeds will rot and flow out milky serous, while seed buds will be dark brown until death; seedling damage is that dark gray sunken disease spots will appear at the base of the stem, until the later stage of the disease will lead to seedling death.

Control methods: carbendazim can be used to disinfect the soil before sowing, and the seeds should also be disinfected. When diseased plants are found, they can be pulled out and taken out of the field in time. Then sprinkle lime powder around the disease point, and fully spray methyl topiramate, which can effectively prevent the disease from spreading.

2. Root rot

It is also a fungal disease, it mainly harms the root system of the plant, the root will appear black-brown disease spot, and will gradually extend upward along the root system, in the humid environment, the base of the stem will gradually soft rot, accompanied by stench, and the plant will gradually die.

Prevention and treatment methods: select the land with good drainage, pay attention to drainage during the rainy season, select varieties with strong disease resistance, pull out the diseased plants and take them out of the field in time, and then disinfect the disease holes with lime powder, and you can also irrigate the roots with carbendazim at the initial stage of the disease. the effect is better.

3. Epidemic disease

It is also a fungal disease, which mainly harms the aboveground parts of the plant. When the disease occurs, the leaf chooses the yellow-brown spot, and the spot has obvious brown edge. In the later stage of the disease, the spot will appear black spots, which can easily lead to leaf perforation; the fruit will appear slightly concave brown spots; the stem will appear sunken yellow-brown ribs.

Control methods: clear the garden comprehensively, burn the dead branches and leaves in time, select seven kinds of seedlings without disease, soak them with Bordeaux solution for a period of time before transplanting, and spray with Dysen zinc or bacilli when the disease occurs, once every other week, 2-3 times in a row.

4. Insect pests

The main pests of Tianqi are mites, aphids, ground tigers and other underground pests, which mainly harm leaves and roots, affect the normal growth of plants, and die in serious cases.

Control methods: turn the soil deeply when planting, kill overwintering pests, serious pests can be controlled with dimethoate emulsion, but pay attention to the concentration, so as not to affect the growth of Tianqi.

The above is the introduction of Tian Qi common pest control methods, hope to help you, want to know more related knowledge, please pay attention to us.