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Investigation Into Insect Pests, Occurrence Dynamics And Control Of New Insect Pests On Fraxinus Chinensis

Posted on:2017-10-16Degree:MasterType:Thesis
Country:ChinaCandidate:J H DouFull Text:PDF
GTID:2323330485457243Subject:Agricultural extension
Abstract/Summary:PDF Full Text Request
Fraxinus chinensis Roxb. belonging to the Oleaceae family in biological taxonomy, can normally grows in barren drought and slight saline soil. Fraxinus chinensis Roxb has many eminent characteristics such as long green period, tree shape, less limbs, rich and slender branchlets, long narrow and smooth leaves, quick growth, so it is widely used in urban afforestation and landscaping. The parasitical pest species on the Fraxinus chinensis Roxb were surveyed in the afforestation fields, nursery lands, residential districts, the villages of the Weifang city and Shanghe county, Shandong province.39 main kinds of pests were found in our investigation. Pests injury degrees occurrence regularities, prevention and cure methods of the S. sinicus Wei, Prociphilus fraxini Fabricius, Aculus amygdali Xue & Hong and Scythropiodes issikii were studied in this paper. The main results are as follows:1. List formation of the major pests species on Fraxinus in our investigation regions.The investigation report about pests damage occurrence period, the parts and the degree of pests damages to Fraxinus chinensis was completed. Our studies will have an important guiding significance for maintenance management and nursery lands production of Fraxinus chinensis Roxb.2. The injury characteristics to Fraxinus chinensis Roxb of these new recorded pests:S. sinicus Wei, Prociphilus fraxini Fabricius, Aculus amygdali Xue & Hong and Scythropiodes issikii were described by the random sampling and fixed site sampling. These pests'life cycles, life habits, occurrence regularities and the prevention and cure method to them were carefully observed and studied.3. The damage characteristics, occurrence regularities of the Apolygus lucor?m, Halyomorpha halys, sloe bug and Erthesina fullo Thunberg and the prevention and cure methods to them were also studied in this paper. These pests are always be overlooked but they really have great harms to the tree tops.
Keywords/Search Tags:Fraxinus chinensis Roxb.Insect pest species, New insect pests, Occurrence dynamics, control methods
PDF Full Text Request
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