Method for preventing root rot disease of astragalus

Abstract

The invention discloses a method for preventing the root rot disease of a Chinese medicinal material, namely astragalus. The method comprises the steps of treatment of soil of breeding field, seedling treatment, elimination of diseased seedlings, root dipping of seedlings, and treatment of soil of transplant field. By the method, the morbidity of the root rot disease of the astragalus can be greatly reduced; and compared with those of astragalus medicinal materials cultivated by the traditional cultivation method under the same conditions, the average morbidity is reduced by 33 percent, and the average yield is improved by 14.2 percent. The operation method is simple and practicable, is low in cost and has good prevention effect.

Description

technical field [0001] The invention relates to the technical field of planting Chinese herbal medicines, and belongs to methods for preventing astragalus root rot. Background technique [0002] Astragalus membranaceus (Fisch.) Bge.var.mongholicus (Bge.) Hsiao or Astragalus membranaceus (Fisch.) Bge. is the dried root of the leguminous plant Astragalus membranaceus (Fisch.) Bge. It is a well-known commonly used nourishing Chinese medicine in my country. It is slightly warm in nature and sweet in taste. It has the functions of invigorating qi and solidifying the surface, diuresis, detoxification and pus drainage, and muscle regeneration. Astragalus is one of the most important Chinese herbal medicines. In recent years, with the expansion of the planting area of ​​Astragalus membranaceus, the area of ​​heavy cropping and direct stubble has increased, causing the damage of Astragalus root rot to increase year by year. Field incidence is usually above 40%, and some even excee...

AI Technical Summary

Problems solved by technology

The quality of medicinal materials has declined, seriously affecting the processing of decoction pieces, and even cannot be used as medicine

At present, the prevention and treatment of Astragalus root rot is mainly to spray fungicides in the field and irrigate the roots with fungicides after the onset, and the control effect is very poor.

Because Astragalus root rot damages the roots, the condition of the roots is quite serious when symptoms are found in the above-ground parts, that is, the above-ground parts are found to grow slowly, and the leaves are lighter or gray-green (gradually develop to the whole plant leaves turn yellow and fall off). It is difficult to control the development and spread of the disease, and the cost of drug prevention and treatment is very high, with little effect

The more troublesome problem is that root rot of Astragalus membranaceus has occurred widely, but the degree of damage is not serious. There are no obvious diseases on the above-ground plants, and the farmers do not control it. Due to root rot, there are many spots and fibrous plaques on the surface of Astragalus membranaceus. The quality generally declines, and the commodity price of this Astragalus medicinal material and decoction pieces is reduced by more than 30%, and the economic loss is huge.