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为明确除草剂对星豹蛛Pardosa astrigera活动行为的影响,采用药膜法测定乙氧氟草醚、乙羧氟草醚和百草枯3种常规除草剂对星豹蛛的毒力,应用旷野试验法研究除草剂对其活动行为的影响。结果表明:乙羧氟草醚对星豹蛛的LC10为6.75 g/L,乙氧氟草醚的LC10为1.09 g/L,3种除草剂对星豹蛛的毒力顺序为乙氧氟草醚>乙羧氟草醚>百草枯。高浓度(5.81~10.53 g/L)乙氧氟草醚处理后雄蛛的行走总路程和平均行走速度均较推荐浓度处理(0.07 g/L)显著降低,6.75 g/L乙羧氟草醚处理后雌蛛行走总路程较其余浓度处理显著降低、雄蛛最大行走速度较0.08 g/L浓度处理显著降低,但这2种除草剂各浓度处理均与对照无显著差异;80.00 g/L百草枯处理后雄蛛的行走总路程、最大行走速度和平均行走速度均较对照显著降低,分别为248.48 cm、12.03 cm/s和0.83 cm/s,4.00~20.00 g/L百草枯处理后雌蛛最大行走速度较80.00 g/L处理显著下降。5.81 g/L乙氧氟草醚处理后雄蛛行走区域数显著下降,较对照下降了4.57个,而雌蛛行走区域数则显著升高,较对照增加了2.20个。20.83 g/L乙羧氟草醚处理后雄蛛在中心区域停留时间最短,为0.48 s,占总时间的比例仅为0.16%,5.81 g/L乙氧氟草醚处理后雌蛛在中心区域停留时间最长,为15.94 s,占总时间的比例为5.31%。表明高浓度除草剂处理星豹蛛后对其活动行为影响显著,而推荐浓度处理后对其无显著影响,说明3种除草剂在推荐剂量下对星豹蛛相对安全。
In order to clarify the effect of herbicides on Pardosa astrigera activity, the toxicity of three conventional herbicides of oxyfluorfen, Law to study the impact of herbicides on their activities. The results showed that the LC10 of acifluorfen to Leo spider was 6.75 g / L, and the LC10 of oxyfluorfen was 1.09 g / L. The order of toxicity of the three herbicides to Leo spider was Ethoxyfluorfen Ether> flurbarone> paraquat. The total walking distance and average walking speed of the male was significantly lower than that of the recommended concentration (0.07 g / L) after treatment with high concentrations (5.81 ~ 10.53 g / L) of oxyfluorfen. The concentration of 6.75 g / The total distance traveled by the female was significantly lower than that of the other treatments. The maximum walking speed of the male was significantly lower than that of the control at 0.08 g / L, but the concentration of the two herbicides was not significantly different from that of the control (80.00 g / L) The total walking distance, the maximum walking speed and the average walking speed of the male were significantly lower than those of the control after the dry treatment (248.48 cm, 12.03 cm / s and 0.83 cm / s, 4.00 ~ 20.00 g / L, respectively) The maximum walking speed was significantly lower than 80.00 g / L treatment. The number of walking areas decreased significantly after treatment with 5.81 g / L oxyfluorfen, which was 4.57 lower than that of the control. However, the number of walking areas of female spiders was significantly higher than that of the control (2.20). After the treatment with 20.83 g / L flufenoxuron, the shortest residence time in the central area was 0.48 s, accounting for only 0.16% of the total time. After treatment with 5.81 g / L oxyfluorfen, the spiders in the central area The longest stay was 15.94 s, accounting for 5.31% of the total time. The result showed that high concentration of herbicide had significant effects on the activity of Lepidoptera, but no significant effect was observed after the recommended concentration of Lepidoptera, indicating that the three herbicides were relatively safe to Lepidoptera at the recommended dose.