[Objective] The paper was to clear biological characteristics and comprehensive prevention and treatment methods of Acantholyda piceacola Xiao et Zhou. [Method] Through captive observation and field survey,the current...[Objective] The paper was to clear biological characteristics and comprehensive prevention and treatment methods of Acantholyda piceacola Xiao et Zhou. [Method] Through captive observation and field survey,the current situation,life history and life habits of A. piceacola were investigated; the occurrence degree of A. piceacola in various regions and the relationship between soil depth and number distribution of A. piceacola were studied. Moreover,the contrast test of a variety of control measures was conducted. [Result] A. piceacola needed one year or more to complete a generation; there were significant differences in insect plant rate and extremely significant differences in population density among different plots. Trunk injection and foliar spraying conducted before the forth larval stage had good protection effects on needles of Picea mongolica; trunk injection with 14% imidacloprid · dichlorvos at egg stage received the best control effect,the loss rate of needles was the lowest of 8. 43%,so the method could be massively popularized in the future. [Conclusion]The results provide a reference for the control of A. piceacola.展开更多
Acantholyda erythrocephala\%, a kind of destructire insect, is found recently in Shenyang, China. Its host tree is \%Pinus\% spp. especially \%Pinus tabulaeformis\% and \%P.densiflora\%. The injured branch, tip will b...Acantholyda erythrocephala\%, a kind of destructire insect, is found recently in Shenyang, China. Its host tree is \%Pinus\% spp. especially \%Pinus tabulaeformis\% and \%P.densiflora\%. The injured branch, tip will be withered or even died. The harmful period of the larvae is about one month. There is one generation during a year in Shenyang area. Winter is passed as prepupae by making earth cells in the soil at the depth of 0～10cm. It can be controlled by many ways:set up closed forest; making conopy density be more than 0.7; digging out the forest soil in autumm, winter or early spring; cutting the larval nests and burning up; spraying 10% pyrethrum at 8000x ditution to the early instar larvae.展开更多
基金Supported by Special Fund for Forest Scientific Research in the Public Welfare(201504412)
文摘[Objective] The paper was to clear biological characteristics and comprehensive prevention and treatment methods of Acantholyda piceacola Xiao et Zhou. [Method] Through captive observation and field survey,the current situation,life history and life habits of A. piceacola were investigated; the occurrence degree of A. piceacola in various regions and the relationship between soil depth and number distribution of A. piceacola were studied. Moreover,the contrast test of a variety of control measures was conducted. [Result] A. piceacola needed one year or more to complete a generation; there were significant differences in insect plant rate and extremely significant differences in population density among different plots. Trunk injection and foliar spraying conducted before the forth larval stage had good protection effects on needles of Picea mongolica; trunk injection with 14% imidacloprid · dichlorvos at egg stage received the best control effect,the loss rate of needles was the lowest of 8. 43%,so the method could be massively popularized in the future. [Conclusion]The results provide a reference for the control of A. piceacola.
文摘Acantholyda erythrocephala\%, a kind of destructire insect, is found recently in Shenyang, China. Its host tree is \%Pinus\% spp. especially \%Pinus tabulaeformis\% and \%P.densiflora\%. The injured branch, tip will be withered or even died. The harmful period of the larvae is about one month. There is one generation during a year in Shenyang area. Winter is passed as prepupae by making earth cells in the soil at the depth of 0～10cm. It can be controlled by many ways:set up closed forest; making conopy density be more than 0.7; digging out the forest soil in autumm, winter or early spring; cutting the larval nests and burning up; spraying 10% pyrethrum at 8000x ditution to the early instar larvae.
