在奥肯纳根的果园里,应用低喷量风送式喷雾机防治害虫已经有25年了。在这一时期,喷雾机的设计已有许多重大的改进,而机器的基本形式却仍旧保留下来。从特点上来看,风机部分被装在靠近地面的地方,喷雾气流向上通过树木,可以较好地防治害虫,但散布农药不均匀,在树的底部喷洒得多,顶部喷洒得少。如果气流强度大到可将雾液带到树木的顶端,那 It has been 25 years since Okanagan’s orchards have been using pest control sprayers. During this period, there have been many major improvements to the design of the sprayer, and the basic form of the machine remains. From the characteristics point of view, the fan part was installed near the ground, the spray air flow up through the trees, can better control pests, but scattered pesticides uneven, spraying much at the bottom of the tree, the top spray less. If the airflow is strong enough to bring the liquid to the top of the trees, then