Abstract:
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.
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