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随着栽培制度的改革,杂交水稻和长生育期品芹中的推广,多蘖壮秧的普及,给二化螟的发生和危害创造了有利条件,其危害程度一年比一年加重,已上升为我县水稻的主要害虫,特别是二代二化螟对杂交水稻和早中稻的危害损失更大。我县每年被一代二化螟危害的水稻面积达18—20万亩,产量损失1,000万斤左右。但遗留下过去长期采用的普治本田防治技术,不仅费工费时,成本高昂,而且治虫效果很差。配套防治新技术较好地解决了这一问题,成为农民易接受和
With the reform of the cultivation system, the popularization of hybrid rice and long-growing celery, the popularization of multi-tiller and strong seedling have created favorable conditions for the occurrence and damage of Chilo suppressalis, whose degree of harm is aggravating year after year. The main pests rising to the rice in our county, especially the second generation rice stem borer, had more damage to hybrid rice and early middle rice. Each year in our county, the area of paddy rice harmed by the stem borer reaches 18-20 million mu and the yield loss is about 10 million kilos. However, the legacy of Pratt & Whitney Honda, which has been used for a long time in the past, is not only laborious and time-consuming but also costly and the effect of pest control is poor. Supporting the prevention and control of new technologies to better solve this problem, as farmers are easy to accept and