论文部分内容阅读
自1978年以来,由于水稻栽培制度的改革、杂交稻的迅速推广和多蘖壮秧技术的普及,二化螟已逐渐成为我省稻区螟害中的主要种群。过去对二化螟的防治主要是治本田第一代造成的枯心,由于防治面积大,费工费药,不能达到经济有效地防治的目的。根据二化螟的发生特点,我省于1981年初提出了把以本田治螟为主改为秧田治螟的策略(过去提的秧田治螟是以杀蛾为主),仍以杀除幼螟为主。通过近两年来的实践,效果
Since the year of 1978, due to the reform of rice cultivation system, the rapid popularization of hybrid rice and the popularization of multi-tiller and strong-seedling technology, the stem borer has gradually become the main population in the rice borer damage area in our province. In the past, the prevention and control of the stem borer was mainly caused by the first generation of Honda. As a result of large area for prevention and control, labor costs and charges could not be achieved economically and effectively. According to the occurrence of Chilo suppressalis, our province proposed in early 1981 to Honda rice borer dominated by the strategy for the control of rice stems (in the past mention the control of rice seedling is moth-based), still kill young barnacles Mainly. Through nearly two years of practice, the effect