Method for effectively preventing and controlling leaf spot disease of radix pseudostellariae

Abstract

The invention discloses a method for effectively preventing and controlling the leaf spot disease of radix pseudostellariae. The method includes the following operation steps that 1 part of a suspension agent contains 15-25% of pyraclostrobin and 15-25% of fluxapyroxad according to weight ratio, and pyraclostrobin and fluxapyroxad are mixed into the suspension agent; the suspension agent is diluted by 2000-4000 folds; the suspension agent is evenly sprayed to leaf surfaces of radix pseudostellariae plants, spraying is performed one time every other 10-15 days, and the suspension agent is continuously used 3-4 times. According to the method, chemical prevention and control are combined with agricultural measures so that the leaf spot disease of radix pseudostellariae can be effectively prevented and controlled, the preventing and controlling effect can be more than 90%, the leaf spot disease problem of radix pseudostellariae is effectively solved, medicinal material quality and safety can be guaranteed while the yield of radix pseudostellariae is increased, and the method is widely suitable for growing radix pseudostellariae medicinal materials and can be applied and popularized.

Description

Technical field: [0001] The invention relates to a method capable of effectively preventing and treating leaf spot disease of heterophylla, belonging to the technical fields of plant protection and traditional Chinese medicine cultivation. technical background: [0002] Pseudostellariae Pseudostellariae Pseudostellaria heterophylla (Miq.) The dry tuber root of Pax has the effects of nourishing qi and invigorating the spleen, promoting body fluid and moistening the lungs. As the wild Pseudostellariae suffers from predatory excavation, resources are becoming increasingly depleted. Today, Pseudostellaria Pseudostellaria is used in the production of clinical formulas of traditional Chinese medicine, Chinese patent medicines, and health care medicines all come from cultivated resources. At present, Shandong, Anhui, Jiangsu, Fujian, and Guizhou are the relatively large production areas for Pseudostellariae Pseudostellaria in China. Among them, the resources produced in Xuanc...

AI Technical Summary

Problems solved by technology

When the humidity is high, water-soaked lesions appear on the damaged leaves, accompanied by chlorosis, and soon begin to rot and cause downy mildew, resulting in ginseng root growth stagnation and reduced yield

The diseased plants grow slowly, the fleshy roots are thin, the yield is low, and the quality is poor, which poses a serious threat to the production of heterophylla heterophylla. Therefore, leaf spot disease has become one of the bottlenecks restricting the development of heterophylla heterophylla industry

[0006] Through field visits and investigations in the cultivation areas of heterophylla heterophylla, it was found that after the occurrence of leaf spot disease of heterophylla heterophylla, the main agricultural use of 1:1:100~1:1 : 200 Bordeaux mixture, 500-600 times liquid of 65% Zinc wettable powder, or 500-1000 times liquid of 50% carbendazim wettable powder for control, but the effect is not ideal, especially in March to May due to high temperature , the humidity is high, once the disease occurs, it can rapidly expand in a short period of time, and the disease occurs seriously, causing many drug farmers to have to destroy the diseased plants, causing huge losses

In addition, Pseudostellariae Radix Pseudostellariae is used as medicine with tubers, so the quality and safety problems are more prominent than those of crops

Since the use of fungicides alone cannot effectively control the spread of the disease, pesticide farmers often increase the number of uses and the amount of use, resulting in a large amount of pesticide residues in the environment, polluting soil and groundwater sources, and causing serious pollution of Pseudostellaria Pseudostellaria, and excessive pesticide residues seriously affect the quality of medicinal materials , leading to safety incidents

In order to ensure the quality and safety of Chinese medicinal materials, there has never been a better method for the prevention and treatment of leaf spot, and so far there is no highly targeted and efficient agent