Cultivation method for platycodon grandiflorum with high yield

Abstract

The invention discloses a cultivation method for platycodon grandiflorum with high yield. The cultivation method comprises the following steps of field selection and soil preparation: seed pretreatment; seeding; management; removal of shade nets; pinching and nipping off of flowers; pest control. According to the method provided by the invention, seeding is performed after base fertilizer is applied, so that nutrition needed by a platycodon grandiflorum growth process is ensured at first; then shade nets are used for covering, so that raindrops are prevented from directly washing seeds, seedlings and soil, a granular structure of the soil is kept, soil hardening is avoided, and a seedling emergence rate and a survival rate are improved; the seeds are processed by the steps of sterilizing by using potassium permanganate solution, soaking into warm water, drying by a warm air machine and accelerating germination by using a germinating box, so that a germination rate of the platycodon grandiflorum is improved, and thus the platycodon grandiflorum seedlings can be stronger, the transplantation survival rate of the seedlings can be improved, the seedlings grow rapidly latterly, and product quality is good; yellow sticky traps in combination with spraying of Chinese herbal medicine are used for killing pests, so that the requirements of being environment-friendly and energy-saving are conformed, plant diseases and insect pests of the platycodon grandiflorum can be greatly relieved, pesticide residues are greatly reduced, and quality of the platycodon grandiflorum is improved.

Description

technical field [0001] The invention relates to the field of traditional Chinese medicine planting, in particular to a cultivation method for platycodon grandiflorum with high yield. Background technique [0002] Platycodon grandiflora belongs to Campanulaceae, a perennial herb, the whole plant is smooth, 40-50 cm high, with white milk in the body. The root is plump and fleshy, long conical or cylindrical, and the outer skin is yellowish brown or taupe. Stem erect, slightly branched upper part. The leaves are nearly sessile, the middle and lower parts of the stem are opposite or the leaves are whorled with 3 to 4 leaves; the leaves are ovate-lanceolate, with irregular sharp serrations on the edges; the upper leaves are small and narrow, alternate. Platycodon grandiflorum is a traditional Chinese medicinal material commonly used in my country. The root of platycodon grandiflorum has the functions of clearing the lungs, eliminating phlegm, relieving throat, and draining pus....

AI Technical Summary

Problems solved by technology

Platycodon grandiflorum adopts the cultivation method of direct seeding in production, and its seed germination rate is low. During the cultivation process of platycodon grandiflorum, the incidence rate is high, and the survival rate of seedlings is low, resulting in low yield of platycodon grandiflorum and poor economic benefits.