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在实验条件下,系统研究了芬兰真绥螨Euseius finlandicus Oudemans对苹果全爪螨Panony-chus ulmi Koch的控制能力。研究结果表明:(1)在15～32℃的温度条件下,芬兰真绥螨雌成螨的捕食量随着温度的上升呈线型正相关。在15～25℃的温度内芬兰真绥螨的产卵量随温度升高而增加,在15℃下平均单雌产卵0.42粒,25℃时平均单雌产卵2.56粒;当温度升到32℃时单雌产卵下降为1.62粒,雌成螨的产卵量与温度的关系呈抛物线型。(2)在5～15头/叶的猎物密度下,雌成螨的捕食量随着猎物的密度增加呈线型正相关,而当猎物密度达到30头/叶时,芬兰真绥螨雌成螨的捕食量处于平稳状态。在5～15头/叶的猎物密度下,芬兰真绥螨的产卵量和产卵量均与猎物的密度呈线型正相关;当每头雌成螨捕食量为1.8～3.5头时,产卵量为1.0～1.5粒。(3)不同温度下,芬兰真绥螨对猎物的不同密度和虫态的功能反应可用圆盘方程II型进行拟合;在25℃条件下捕食效率最高且喜好捕食的虫态是卵和幼螨。
Under experimental conditions, the control ability of Euseius finlandicus Oudemans on Panony-chus ulmi Koch was systematically studied. The results showed that: (1) At 15 ~ 32 ℃, the predatory amount of female adult mites Acipennis mite had a linear positive correlation with temperature rise. In the temperature range of 15 ~ 25 ℃, the amount of spawning of A.sitzeri increased with the increase of temperature. The average number of spawning eggs was 0.42 at 15 ℃, and 2.56 at the temperature of 25 ℃. When the temperature reached The fecundity decreased to 1.62 at 32 ℃, and the relationship between fecundity and temperature was a parabola. (2) The prey density of female adult mites was positively correlated with the density of prey at 5 ~ 15 heads / leaf prey density, while when the prey density reached 30 heads / leaf, The predation of mites is in a steady state. At the quarry density of 5-15 heads / leaf, the fecundity and fecundity of Finnish mustard mites were positively correlated with the densities of prey. When the fecundity of females was 1.8-3.5, Oviposition amount is 1.0 ~ 1.5 grains. (3) At different temperatures, the functional response of Eisenius sciuropus to different densities and insect states of prey can be fitted by disc equation II; the predation efficiency and predatory prey at 25 ℃ are eggs and young Mite