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去年,我们从6月4～16日,在谷地、小麦地、油菜地及玉米地分别插谷草与稻草把进行了粘虫的诱卵试验。每亩地插草把20把,谷
Last year, from April 4 to June 16, we conducted an egg-hatching test on armyworms and straw weeds in the valleys, wheat fields, rape fields and corn fields. 20 acres of grass per acre, valley