论文部分内容阅读
在三门峡市苹果主产区5个地点各选择2个管理水平和产量接近的苹果园中的苹果树为研究对象,调查分析了套袋对果实萼筒开张率、霉心病发病率的影响。结果表明:“富士”苹果套袋后萼筒开张率和霉心病总发病率均呈动态上升趋势,分别为21.0%~47.0%和14.0%~46.0%,高于对照不套袋16.0%和11.0%的水平;在萼筒开张的果实中霉心病病果率达32.5%~89.4%,高于萼筒闭合果实0~13.0%的水平;套袋后“富士”苹果萼筒开张率增高是霉心病高发新的重要病因,在致病原理与防控技术上有别于其它致病菌。
Two apple trees in apple orchards with similar management level and yield were chosen as the research objects in 5 locations of apple production area in Sanmenxia City. The influence of bagging on the opening rate of calyx tube and the incidence of mold heart disease were investigated. The results showed that the percentage of opening of calyx tube and the incidence of mold-shaped heart disease were both increased from 21.0% to 47.0% and from 14.0% to 46.0% respectively after bagging of “Fuji” apple, which was higher than that of control without bagging of 16.0% And 11.0% respectively. The incidence of mold disease in the opening of the calyx tube was 32.5% ~ 89.4%, which was higher than the level of 0 ~ 13.0% of the calyx tube closed fruits. After bagging, the “Fuji” apple calyx tube was opened High rate of increase is a new cause of mildew high incidence of pathogenesis and prevention and control technology is different from other pathogens.