仙米林区云杉矮槲寄生为害状况及防治

Damage situation and control of Arceuthobium sichuanense in Xianmi forest area

对仙米林区云杉矮槲寄生发生、为害状况进行了调查,并选用40%乙烯利水剂和75%百阔净乳油对云杉矮槲寄生进行防治。结果表明:40%乙烯利水剂50倍、100倍稀释液对促进矮槲寄生果实提前脱落率分别为94.5%和92.4%,75%百阔净乳油50倍、100倍稀释液对矮槲寄生防治效果分别为60.6%和58.7%。生产中推广使用40%乙烯利水剂和75%百阔净乳油的稀释倍数均为100倍。

The occurrence and damage situation of Arceuthobium sichuanense on spruce in Xianmi forest area were investigated and 40% ethephon AS and 75% MCPA EC were used to control Arceuthobium sichuanense.The results showed that fruit pre-abscission rate of Arceuthobium sichuanense were 94.5% and 92.5% respectively by applying diluted 50 times and 100 times of 40% ethephon AS aqueous solution.The controlling effects of diluted 50 times and 100 time of 75% MCPA EC were 60.6%and 58.7%.The 100-fold dilution of 40% ethephon AS and 75% MCPA EC is recommended in practice.