安徽省大部份稻田栽种中稻,单季晚稻和双季连作稻也占有一定的面积。一般年份以三化螟为害迟栽中稻造成白穗;以及为害连作晚稻造成枯心苗,损失较重。如果中稻没有迟栽的,螟害损失就会大大减柽。但目前因为有以下三种困难,有一部份中稻不得不推迟栽秧。(1)小麦田,特别是迟熟的 Most of paddy fields in Anhui Province planted middle-season rice, single-season late rice and double cropping rice also occupy a certain area. In general years of late rice stem borer caused by late rice planting white spike; and crop damage caused by continuous cropping late rice seedlings, heavier losses. If there is no late rice planted, the damage will be greatly reduced 螟 borer. However, due to the following three difficulties, some of them have to postpone their planting. (1) Wheat fields, especially late-maturing