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我省主要蔗区地处亚热带,气候温和雨量充沛,耕作制度复杂,害虫发生种类繁多,为害重。又由于蔗株高大茂密,生长期长,欲靠大量施用农药或某种单一手段进行防治,非但成本高,也难以达到长期控制害虫的目的。因此,合理的防治法应在农业技术防治的基础上,把生物防治和化学防治有机地结合使用,做到既充分发挥自然界生物因子控制害虫的作用,又在必要时用化学农药作辅助和应急手段,才能达到较为经济持久地控制害虫确保蔗糖丰收的目的。本试验根据这一要求,对蔗螟(二点螟Chilotraea infuscatellus Snellen、黄螟Argyroploce
The main sugarcane planting area in our province is located in the subtropical zone with abundant rainfall, mild climate, complicated farming system, wide variety of pests and serious damage. In addition, due to the large and dense cane plant and long growing period, it is not only high in cost but also difficult to achieve long-term control of pests because of the heavy application of pesticides or some single means of control. Therefore, a reasonable prevention and cure method should be organically combined with biological control and chemical control based on the prevention and treatment of agricultural technologies, so that not only biological insect pests can be brought into full play by natural biological factors but also supplemented and replenished by chemical pesticides when necessary Means in order to achieve a more economical and lasting control of pests to ensure sucrose bumper harvest purposes. In this experiment, according to this requirement, the sugarcane borer (Chilo suppressalis Chilotraea infuscatellus Snellen,