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期 刊 ：中国中药杂志 1998年 23卷 12期 页码：714.

关键词：三七；根腐病；环境条件；荫棚透光率；种植制度；田间管理；

Keywords:Panax notoginseng, root rot, environmental conditions, light transmitting rate in the shade shed, cultural system, field management,

摘 要 ：目的:了解三七根腐病的发生与环境条件的关系,为综合防治积累资料。方法:采用田间小区定点定期观察与分析进行研究。结果:文山地区三七根腐病普遍发生,每年有两次发病高峰期,第1次出现于3～4月,第2次出现于7～8月,气温20℃,相对湿度大于95%有利于病害发生和蔓延。透光率过大(>30%),发病严重。连作地较轮作地和新栽地发病重,且连作年限越长病情越重。田间管理水平也影响病害的发生和发展。结论:三七根腐病的发生、发展与环境条件密切相关。

Abstract:Objective:To probe into the relationship between root rot on Panax notoginseng and its environmental coditions for integrate control of the desease.Method:Field observation and analysis on the planting plots were conducted regularly.Results:Root rot on P.notoginsengoccurs extensively in Wenshan Prefecture,with two peaks of incidence per year.The first peak appears in March April;and the second July August.Air temperatures around 20℃ and relative humidities of higher than 95% are farorable for the disease to occur and spread.The root rot is severe when the light transmitting rate in the shade shed is too high(>30%).The disease is severer in land of continuous cropping than in land of rotational cropping and land of new cropping.The severity of the rot increases with the years of continuous cropping.The art of field management also influences the occurring and spreading of the disease.Conclusion:The occurring and spreading of P.notoginseng root rot are closely related to its environmental conditions.

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