Abstract:

In order to explore technologies of ecologically regulation of Botrvtis cinerea in green house in the spring, a pointing-observation method was used to conduct the systemic monitoring of spreading regularity of Botrytis cinerea. Results showed that occurrence of Gray Mold can be divided into three stages as follow: (1) the first stage was a period of rapid growth in the first ten days and the middle ten days of April; (2) the second stage was a period of steady growth from the last ten days of April to the first ten days of May; (3) the third stage was slow growth period after the last ten days of May. The statistical analysis revealed that incidence of Botrvtis cinerea was significantly positively correlated with disease index, daily mean temperature and daily mean relative humidity. Therefore, during commercial production, cutting the leaves infested and regulating temperature and humidity in greenhouse should be adopted as ecological control to manage the expander and spread of the disease.