| Abstract: the result indicate: depending on the Hemiberlesia pitysophila Takagi' s number of Pinns massoniana, P. Thunbergii and P. Elliottii,, compared Finns massoniana to P. Thimbergii, it is proved to be significant difference in the number of Hemiberlesia pitysophilaAn contrast, compared P. Elliottii to P. Thunbergii, it is showed that difference of pest number is extremely significant, by the comparison of Finns massoniana and P. Elliottii, the pest number is showed to be not remarkable difference. Under the Fujian province Fuqing ecosystem environment, among these three pine tree, P. Elliottii' s anti- Pest is the most strong, Pinus massoniana's is second, P. Thunbergii ' s is the most bad; But on the different slope's position, it is not significant to the pest number.The threshold temperatures and effective accumulate temperature of development of Hemiberlesia potysiphila have been determined. The developmental threshold temperature of the I instar nymph is 6.6℃ ±0.8℃ ,the II instar nymph9.0℃±1.0 ℃ , the pupal stage 12.0℃ ±1.6℃ , the female adult stage 9.7℃±1.4℃, the whole life history10.1℃±0.7℃ . The effective accumulated temperature of the I instar nymmh is 219.2 DD, the II instar nymph 163.6 DD, the pupal stage 66.1 DD, the female adult stage 334.2 DD, the whole life history 566.0 DD. Which benefits to the protection of Hemiberlesia potysiphila in some area.Taking no account of the other factor to influence of pest mortality rate in the room term rains, under the experiment term Hemiberlesia pitysophila Takagi mortality rate is along with the gain that the rainfall measure and go up. The volume of rain to measure are above 90 mm, mortality rate and rain's volume to measure is test to be negative related. At the same time rain time can also influence mortality rate certainly under same alike rain the deal's term.. The nymph's mortality rate is obvious higher than the adult's mortality rate.In the Fujian province Fuqing region, there are four high peak of Hemiberlesia pitysophila Takagi occurrence, which appear between second ten days of April and first ten days of May, between first ten days of June and last ten days of June, between October 's middle ten days and November's first ten days, and between middle ten days of December and the second year middle ten days of January, among which the best high peak period of Hemiberlesiapitysophila Takagi occurrence appeared at middle ten days of April to first ten days of May. Hemiberlesia pitysophila Takagi growth and decay on southern slope of mountain is not completely heavy to match with on northern slope of mountain, in 2001 second half year Hemiberlesia pitysophila high peak emergence time on southern slope of mountain was, compared t the high peak to appear time on northern slope of mountain, several days early, but in 2002 first half year Hemiberlesia pitysophila high peak emergence time on southern slope of mountain was, compared t the high peak to appear time on southern slope of mountain, several days early.Average population density of Hemiberlesia pitysophila on the slope to face wind higher than on the slope to back to wind carry, it manifest further that wind is one of the most mediums which spread the Hemiberlesia pitysophila Takagi.Rhodomyrtus tomentosa association's pest number is little different with Dicranoptweis linearism associations. Although the mortality rate exists difference, not obvious. At Fuqing region Pinns massoniana wood, the number of average pest every pine needle on Pinus massoniana that is light damage [ 1.524,2.406 ] ; the number of average pest every pine needle on Pinus massoniana that is medium damage [ 3.586,5.662] ; the number of average pest every pine needle on Pinus massoniana that is serious damage [ 6.461,9.961 ]. Measured by clump intensity index and regressive analysis method. The results showed that in pine forest, the spatial dstribution pattern of the nymphs of Hemiberlesia pitysophila are conferred to assemble distribution. However, the adults of Hemiberlesia pit...
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