Method for preventing and treating panax notoginseng round spot

Abstract

The invention discloses a method for preventing and treating panax notoginseng round spot. The method comprises the following steps of: constructing an arched tunnel of which the arch height is 1.2cm and the arch width is more than soil moisture width and less than the sum of the moistened soil width and the width of drainage ditch between the moistened soils on each moistened soil surface where panax notoginseng is planted in a panax notoginsen shade-shed, wherein the arched tunnel is constructed by reinforcing steel bars or bamboos; covering a plastic film on the outer surface of the arched tunnel in a rainy day and ensuring that the edge of the plastic film is sagged to the bottom surface of the drainage ditch between the moistened soils; and uncovering the film when the rain stops. With the adoption of the method, the newly-increased disease strain rate of the round spot is reduced by over 90 percent, that is, the loss is recovered by 90 percent, and the grade of the disease strain only reaches a grade 1; and meanwhile, the newly-increased disease strain rate of epidemic disease is reduced by over 95 percent. In addition, because newly-increased disease strains are unavailable to melasma, gray mold and powdery mildew, the dosage quantity of sterilizing agents and artificial insecticide spraying expense are reduced, the planting cost is saved, the yield of panax notoginseng is increased, the quality of panax notoginseng is improved and the income is increased; and moreover, the arched tunnel uses simple materials and is easy and convenient to operate.

Description

technical field [0001] The invention relates to the technical fields of plant disease prevention and control and planting of Chinese medicinal materials, in particular to a method for preventing and treating the destructive disease of Panax notoginseng and other Panax notoginseng diseases. Background technique [0002] Notoginseng Panax notoginseng (Burk.) F.H.Chen. is Araliaceae (Araliaceae) Panax genus ( Panax ) is a perennial plant, which is a rare and precious Chinese medicinal material unique to China, and is also the main component of Yunnan Baiyao. [0003] Panax notoginseng is a typical shade C3 plant, which needs to be cultivated under shading conditions, and the growth environment is shady and wet, which can cause the occurrence and harm of various diseases, such as round spot ( Mycocentrospora acerina ) is a devastating disease that appeared in Panax notoginseng gardens in the 1990s. The loss caused by the disease accounts for more than 30% of the losses of a...

AI Technical Summary

Problems solved by technology

Several years of production practice and experimental research by the inventor have confirmed that as long as the rainy season is so large that the rain falls for 1 hour or lasts for more than 3 days, the existing fungicides and other agricultural measures on the market cannot basically control the disease.

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