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我国人参黑斑病常年发病率为20—30％,严重时高达90％,是造成参根和种子大幅度减产的主要原因。人参种子带菌,病粒率为1.8—11.5％,孢子负荷量为0—1.8。处理的裂口籽带菌率为60％,未裂口的带菌率为85％。分生孢子室内存活310—339天,埋入地下10厘米处菌丝体,第二年6月全部腐烂。带菌的人参种籽、种苗是新参园的初侵染源。参棚和参床的茎、叶病残体及土壤带菌是老参园黑斑病的主要侵染源。限据黑斑病发病的生态条件、人参参龄、不同生育阶段与发病的关系,提出了预测预报和药剂防治的指标及综合防治的途径。
The annual incidence of ginseng black spot is 20-30% in our country, and up to 90% in severe cases, which is the main reason for the significant decrease of ginseng root and seed. Ginseng seeds carry the disease rate is 1.8-11.5%, the spore load is 0-1.8. The rate of rip-seed treatment was 60% and the rate of un-breached bacteria was 85%. Conidia indoor survival 310-339 days, buried in the ground 10 cm mycelium, the second year of June all decay. Ginseng germ-bearing seeds, seedlings are the initial source of new Park Park infection. Ginseng and ginseng stems, leaf disease and soil contamination is the main source of Parkinson’s disease. According to the ecological conditions of the onset of black spot disease, ginseng age, different stages of childbirth and the incidence of the disease, put forward the forecast forecast and the medicament prevention and cure the index and the comprehensive prevention and cure way.