仿野生栽培华重楼群落的病害程度调查与分析

Investigation and Analysis on Disease of Bionic Cultivated Paris polyphylla var.chinensis

为了解仿野生栽培华重楼Paris polyphylla var.chinensis群落的病害发生情况,从而对人工栽培华重楼病害防治工作提供科学指导,本研究对浙江省遂昌县4个华重楼仿野生栽培基地的地理条件、林分状况、华重楼群落的染病情况及栽培管理措施等进行了调查统计,并对染病率、病情指数、倒苗率三个病情指标与海拔、林情、栽植密度及栽培管理措施的相关关系进行研究。结果表明,4个调查样地的病害程度依次为:垵口乡桂洋村<白马山林场<金竹镇叶村道班后<金竹镇叶村小银坑;生境海拔、郁闭度均与病情指标呈负相关关系;枝下高、林冠高、栽植密度对华重楼病情未表现出实质性影响;栽培管理措施对染病率和倒苗率未产生实际影响,但早期的药物防治和规律的拔草管护措施可以显著降低病情的严重程度。

In March,May and August 2020,investigations were conducted on geographical conditions,forest,disease of 4 bionic cultivated Paris polyphylla var.chinensis stands and cultivation measures in Suichang county,Zhejiang province.Correlation analysis was made on infection rate,disease indicators,and damping off rate with altitude,forest,planting density and cultivation measures.The result demonstrated that habitat,altitude,closure had negative relation with disease indicators.The clear bole height,canopy height,and planting density had no evident influence on the disease.Cultivation measures had no actual impact on the infection rate and damping off rate,however,early pesticide control and regular weeding could significantly reduce the severity of the disease.