养蟹稻田二化螟和三化螟螟害率是常规非防治稻田的2—3倍，甚至更高；
The damage of Chilo suppressalis and Tryporyza incertulas was about 2-3 times of that in monoculture paddy-field and even more;
稻螟是我国长期以来的一种严重害虫，解放前因螟害常年损失稻谷10%以上。
The paddy borer is the chief pest of rice in China, causing an annual loss not less than 10% in average years before liberation.
结果表明：甘蔗苗期螟害枯心率的高低与甘蔗品系田间蔗汁锤度的高低没有显著关系。
The results showed that there was no significant relationship between dead heart rate and the sugarcane-juice brix.
另一方面力求改进栽培技术、调节水稻生育期，恶化螟虫的生活条件，避免或减轻螟害。
Moreover, it is important also to improve cultural practices, regulate the growth stage of rice and deteriorate the living conditions of the paddy borer in order to avoid or reduce borer injury.
另一方面力求改进栽培技术、调节水稻生育期，恶化螟虫的生活条件，避免或减轻螟害。
Moreover, it is important also to improve cultural practices, regulate the growth stage of rice and deteriorate the living conditions of the paddy borer in order to avoid or reduce borer injury.
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