成长叶;
The toxicity to adult females and eggs of Tetranychus viennensis were tested with several acaricides have been used in recent years by both slide dip method and leaf disk dip method.
采用玻片浸渍法和浸叶碟法,选用近年来在生产上推广应用的9种杀螨剂,对山楂叶螨的雌成螨和卵进行了毒力测定。
The peak periods of damage by the adult of leaf miners in a day were from 9:00 to 11:00 and 13:00 to 15: 00. The female-to-male ratio rose significantly in the last ten days of March and the first 20 days of June.
一日中9:00~11:00、13:00~15:00是潜叶蝇成虫为害高峰期;3月下旬、6月上中旬潜叶蝇/明显升高。
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