| Encarsia formosa is the world's largest, most widely used and research type of one of Encarsia. In this paper, based on research at home and abroad to collect the local Xinjiang Encarsia bee species and Trialeurodes vaporariorum for the study, combined with the actual production and application requirements, in connection with the application of Encarsia formosa and Trialeurodes vaporariorum control of the field is closely related to the environment the impact factor of the basic research, the main results are as follows:1. Through the investigation and identification indoor of southern, northern and eastern Xinjiang region, the greenhouse for the greenhouse whitefly was Trialeurodes vaporariorum and Bemisia tabaci occurred in the mixed, in which various parts of Xinjiang were collected Bemisia tabaci is Bemisia tabaci biotype B; against the Turpan area of greenhouse crops and vegetables for the whitefly Bemisia tabaci, and serious. The survey also found in Xinjiang in the east, south, northern greenhouse whitefly are the occurrence of parasitic wasp, distribution of a wide range of natural parasitic wasp emerged only in the greenhouse whitefly, and the higher rate of parasitism, the highest rate of the field of natural parasitic up to 69.53%, while Bemisia tabaci found in naturally occurring parasitic wasp.2. Indoor studied the impact of development and reproduction at different temperatures, Photoperiod,host to the Xinjiang region Trialeurodes vaporariorum, the study found:the difference of adult life and fecundity of Trialeurodes vaporariorum was significant changes under different temperature, and the highest value of 25℃in tobacco on the length of the performance of its life to 25℃>20℃>30℃>15℃>35℃. In the tomato on the performance of female adult life expectancy for 25℃>20℃>30℃>15℃>35℃, the performance of male adult life expectancy for 25℃>30℃>20℃>15℃>35℃. Effect of temperature on the impact of greenhouse whitefly eggs showed changes with temperature was first increased and then decreased, the average size of each of the performance of female fecundity to 25℃>30℃>20℃>35℃>15℃. Average female fecundity the highest values appear in the 25℃.Light in different length of time, with the illumination time, Xinjiang Greenhouse Whitefly fecundity increased significantly in the 12h illumination time over the volume of greenhouse whitefly eggs was significantly higher than when the long light of the following six hours of Greenhouse Whitefly fecundity.During the trial of seven selected host plants, the greenhouse whitefly in tobacco (kamodini) to lay their eggs on the most, an average of 147 eggs per female. All other tobacco smoke Mo species (local varieties) 121 of eggs, close to the amount of tomato on the eggs. Trialeurodes vaporariorum in the three host plants was significantly higher than the fecundity eggplant, cotton, cucumber, pepper, and in the amount of pepper on the eggs at least, the average eggs per female was only 7.3. Effect of temperature on Encarsia survival greater impact, high temperature and low temperature are not conducive to the survival of small bee. The temperature significantly. In the case of nutritional supplements,18℃when the wasp could survive 28.7 days on average; 22℃and 26℃condition is better wasp survival temperature, the average survival time of 32.1 days and 37.8 days to reach; and in 30℃,34℃high temperature conditions, a small bee, respectively, the average survival time was 20.4 days and 10.9 days.Supplementary nutrition can be extended Encarsia life, supplement different concentrations of honey results show that supplementary nutrition may be extended for Encarsia sp adult life, and along with honey feeding concentration increased, the survival time of wasps in general have also extended 60% and 80% concentrations of Encarsia to small differences in life expectancy is not significantly affected, were 34.0 days and 35.9 days,100% honey wasp can extend survival to 38 days on average. Without supplementary nutrition Encarsia sp into an average of only 4.79 days to survive.Low-temperature storage was the greenhouse whitefly parasitic pseudo-pupa,3℃under the conditions of the lowest eclosion, only 10.33%; 6℃and 9℃eclosion rate under the conditions of the second, respectively,47% and 58%; 12℃under the conditions of emergence rate up to 81.67%, eclosion rate and room temperature is no less than 90.33%.Stored in the same storage conditions and different day-old pupae, storage 1,2-day-old pupae and a higher rate of 79.33%, respectively and 76.67%. And 6-day-old pupae and only 30.67%, storage 1-day-old pupae and the rate of better than the other days.4. Keep chack of the time,with tobacco as host plants, Low-temperature storage of 1-day-old pupae and 10 days after the eclosion of adult bees to parasitic pseudo Trialeurodes vaporariorum early pupae, can be successfully Encarsia bulk breeding. The results of experimental from the field shows, the volume of different release tests, with a total capacity of release of 15,000 test results significantly better than other treatments;release of different test points, setting eight points release effects better than other treatment. |
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