论文部分内容阅读
二化螟预计一代二化螟主要为害早稻和中稻秧田;二代二化螟主要为害中稻和晚稻秧田;三代二化螟主要为害晚稻;全省发生面积约1467万公顷。三化螟预计一代三化螟全省大部分发生程度2级,二代三化螟在全省大部发生程度3级,局部4级,三代在鄂东和江汉平原部分稻区发生程度4级、局部5级
Chilo suppressalis (Chilo suppressalis) is the first generation of Chilo suppressalis (Chilo suppressalis) that mainly affects early rice and mid-season rice seedling. Chilo suppressalis (Chilo suppressalis) secondly damages mid-season rice and late-season rice seedling. Chilo suppressalis larvae mainly affect late rice. Approximately 14.67 million hectares occur in the province. Borer borer is expected to produce most of the three generations of borer in the province the extent of 2, the third generation Borer occurred in most of the province level 3, part of the 4, third generation in parts of eastern Hubei and Jianghan Plain occurred 4 , Partial 5 level