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巴氏新小绥螨Neoseiulus barkeri Hughes释放袋悬挂于板栗树主干后,沿植株枝条由近及远,逐渐扩散,在距挂袋处1 m、2 m、3 m和4 m处的叶片上分别于释放后1 d、1 d、3 d和7 d时达到种群密度高峰,7 d最远扩散距离达到距挂袋处4 m以上。距挂袋处不同距离巴氏新小绥螨的密度相差较大,由近及远,密度逐渐递减,相应的,不同距离处板栗小爪螨Oligonychus ununguis的密度由近及远逐渐增大,1-3 m处板栗小爪螨的密度明显低于对照株,4 m处的板栗小爪螨密度与对照株相近。
Neoseiulus barkeri Hughes release bag after hanging on the chestnut trunk, along the plant branches from near and far, and gradually spread, at the distance from the bag 1 m, 2 m, 3 m and 4 m at the leaves respectively At 1 d, 1 d, 3 d and 7 d after release, the peak of population density reached its peak, and the farthest diffusion distance reached a distance of more than 4 m from the hanging bag on the 7th day. The density of Oligonychus ununguis at different distances from the bags varied greatly from near and far, and the density gradually decreased. The density of Oligonychus ununguis increased gradually from near to far, The density of Chestnut small-mite at -3 m was significantly lower than that of the control. The density of Chestnut small-mite at 4 m was similar to that of the control.