| Sophora japonica is widely planted as Street Tree of Urban Greening in Weifang. Recently,with the increase of planting quantity and age of Urban Sophora japonica, as well affected by the special climate and artificial control and other factors in cities, the kinds of Sophora japonica pest continuously increase. According to the incomplete statistics, the kinds are up to76, in which Semiothisa cmerearia, Apriona swainsoni and Cydia trasias are the worst ones,and thus the normal growth of Sophora japonica and city beautification are greatly affected.Currently, the control of Sophora japonica pest mainly relies on the chemical pesticides, which not only make the pests have high resistance to pesticides, but also kill the pest natural enemies, destroying the ecological environment.In order to better apply the harmless technologies to control the Sophora japonica pests in Weifang City, the occurrence regularity and harmless control technologies for such 3 species pests Sophora japonica were studied.(1) The occurrence regularities of such 3 Sophora japonica pests are found out in detail, which lay the foundation for the subsequent construction of harmless control technology.(2) As using chemical method to control Semiothisa cmerearia larva, 1.2% Smoke matrine has the best effort, the corrected mortality after 5d is over 90%.(3) As using hole injection method to control Semiothisa cmerearia, can use 10%cypermethrin emulsifiable solution 60 times liquid for processing.(4)Respectively in Apriona swainsoni larvae and adult stage, can be used inside th e injection such as imidacloprid absorption,will be diluted with water, only 3 holes, ea ch hole using liquid volume of 3 ml,can effectively control the hazards of Apriona sw ainsoni.(5) Pheromone traps have better trapping and killing effort for Cydia trasias male adult,and the peaked is between June 5th and June 8th. The trapping and killing effort is closely related to the overwintering Cydia trasias eclosion regularity. |
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