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《Scientia Silvae Sinicae》 1996-06
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Qi Jingliang; Wang Yuying (Yunnan Academy of Forest Sciences Kunming 650204)  
The yunnan pine needle scale (Sonsaucoccus yunnansonsaus Young et Hu) is a majorpest of yunnan pine (Pinus yunnanensis Franch) in Yunan Province. It has one generation a year in Kunming, and the adult appears from early April to late June, the egg appears from late April to late June, and the pupa which has the characteristics of sociality appears from early April to mid May' The ralations of its emergence with rain fall, daily temperature, forest type, host density and natural enemy were also studied. Its mortality has positive relation with rain fall and low temperature. Establishment of mixed for est combining with protecting natural enemy and killing pupae in pupal stage, may obtain significant effetiveness.
【CateGory Index】: S763
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Chinese Journal Full-text Database 1 Hits
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Chinese Journal Full-text Database 10 Hits
1 Wang Shuli(HeilongjiangForest Research Institute, Harbin 150040, P. R. China); Ge Jianping, Liu Jichun(Northeast Forestry University) Journal of Northeast Forestry University.2000, 28(3).22~25;The Close-to-nature Management Techniques of Korean Pine Wood Plantation[J];Journal of Northeast Forestry University;2000-03
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