砍病树、剪病枝对柑桔木虱成虫迁飞影响模拟试验

Migratory Simulation Experiment Affecting with Cutting and Pruning Diseased Tree

为了探究在没有有效杀灭柑桔木虱的情况下砍病树、修剪,除了会将带病木虱人为驱赶到附近的健康树上外,是否会在短途运输病树枝的过程中传染路两边的果园和传染存放病树枝村庄附近的果园。笔者做了砍病树、剪病枝对柑桔木虱成虫迁飞影响的模拟试验。结果表明:冬季砍病树,成虫的飞走率为30.2%;冬季剪病枝并拖一段距离后将树枝扔到车上,木虱成虫的飞走率为47.4%;秋季剪病枝,成虫的飞走率为31.8%;夏季剪病枝,成虫的飞走率为44.8%。直到叶片干枯、脱落后,成虫才完全飞走。温度越低,飞走率越低。短途运输带木虱病树枝,会传染路两边的果园和存放病树枝的村庄附近的果园。砍、挖病树前必须彻底杀灭其上的木虱。

The author did a migratory simulation experiment affecting the citrus Psyllid aim to investigate whether cutting or pruning diseased trees will affect the orchard on both sides of the road or near the village storing the branches in the process of short-distance transportation of the branches, other than driving the Psyllid to the healthy trees nearby under the condition of failing to kill the citrus Psyllid effectively. The result shows that when cutting the trees with disease in winter, the flying-away rate of adult Psylla is 30.2%. However, pruning branches in winter and after dragging into the vehicle, the Psyllid adult migratory rate was the branches some distance away and then throw them only 47.4% while in autumn the rate is 31.8% and summer, 44.8%. The adult Psyllid citrus will fly away completely until the leaves dry and fall off from the tree. The lower the temperature, the lower the flying-away rate. Transporting the branches with disease in short distance will affect the orchard on both sides of the road and the orchard near the village storing the branches. Therefore, before cutting or digging diseased trees, the citrus Psyllid should be killed thoroughly.