CAJ | 학술논문

烟粉虱是云南省农业生产上的重要害虫之一。通过田间系统调查和室内观察相结合，研究了烟粉虱在烟株上的垂直分布特性和在8种寄主作物上的取食、产卵趋性。（1）烟粉虱在烟株上的垂直分布特征为上部＞中部＞下部，8月中旬为种群高峰期，上、中、下部叶片的成虫密度分别为15．1、10．9、6．7头?片-1；（2）烟粉虱成虫的取食趋性表现为大豆＞南瓜＞甘薯＞番茄＞一品红＞茄子＞甘蓝＞烟草，各处理间差异不显著（P＞0．05）；（3）产卵趋性表现为一品红＞大豆＞南瓜＞甘薯＞番茄＞茄子＞甘蓝＞烟草，一品红与南瓜、甘蓝、茄子、甘薯、番茄、烟草处理间，以及大豆与烟草处理间存在显著差异（P＜0．05），其他处理间差异不显著（P＞0．05）。在所测定的8种寄主植物中，烟粉虱成虫对烟草的选择性最差，烟区规划烟田种植范围时，应避免与大豆、南瓜、甘薯、番茄等作物间作或距离太近。
연분슬시운남성농업생산상적중요해충지일。통과전간계통조사화실내관찰상결합，연구료연분슬재연주상적수직분포특성화재8충기주작물상적취식、산란추성。（1）연분슬재연주상적수직분포특정위상부＞중부＞하부，8월중순위충군고봉기，상、중、하부협편적성충밀도분별위15．1、10．9、6．7두?편-1；（2）연분슬성충적취식추성표현위대두＞남과＞감서＞번가＞일품홍＞가자＞감람＞연초，각처리간차이불현저（P＞0．05）；（3）산란추성표현위일품홍＞대두＞남과＞감서＞번가＞가자＞감람＞연초，일품홍여남과、감람、가자、감서、번가、연초처리간，이급대두여연초처리간존재현저차이（P＜0．05），기타처리간차이불현저（P＞0．05）。재소측정적8충기주식물중，연분슬성충대연초적선택성최차，연구규화연전충식범위시，응피면여대두、남과、감서、번가등작물간작혹거리태근。
Background Bemisia tabaci ( Gennadius ) is one of the important pests of various cultivated crops in Yunnan Province . Studies of the use of various host plants could aid the development of control methods of this harmful invasive species .[Method]We combined of field investigation with laboratory observations to describe the vertical distribution of B.tabaci on tobacco plants , and feeding location , and oviposition preference on eight other host plants .[Result]Whiteflies preferred the upper parts of tobacco plants over the middle or lower part .The population peaked in mid August , with adult densities of 15.1, 10.9, and 6.7 individuals per leaf on the various plant parts , respectively .The feeding preference sequence demonstrated by B.tabaci adults was soybean (Glycine max)>pumpkin (Cucurbita moschata) >sweet potato (Dioscorea esculenta) >tomato (Lycopersicon esculentum) >poin-settia (Euphorbia pulcherrima) >eggplant (Solanum melongena) >cabbage (Brassica oleracea) >tobacco (Nicotiana tabacum), but with no significant differences between them .The oviposition preference of B.tabaci adults was poinsettia >soybean>pumpkin>sweet potato>tomato>eggplant>cabbage>tobacco.Adult fecundity showed significant differences between poinsettia and pump -kin, cabbage, eggplant, sweet potato, tomato and tobacco;there was also a significant difference in fecundity on soybean vs .tobac-co.There was no significant difference on the other host plants .[Conclusion and significance]Tobacco was a less preferred and less suitable host plant for B.tabaci than the seven other host plants studied .Consequently, soybean, pumpkin, sweet potato, or tomato should not be planted in the near vicinity of tobacco plantings , because of possible spillover of the pest from these crops .