【摘要】 根据生产上甘蔗收获期蔗叶处理方法的不同,通过田间试验,测定了蔗叶焚烧和蔗叶粉碎还田对当年宿根蔗的甘蔗螟虫发生的影响。结果表明:在苗期,甘蔗螟虫以二点螟为主;在甘蔗生长中后期,条螟、黄螟和二点螟混合发生为害,但条螟种群数量最大。与蔗叶焚烧处理相比,蔗叶粉碎还田处理中,螟害导致的螟害株率相当,分别为94.17%和91.39%,但枯心率和螟害节率均显著降低,分别为43.86%、12.29%和17.23%、13.57%,表明蔗叶粉碎还田有利于减轻甘蔗螟虫为害。更多还原

【Abstract】 Considering of the different methods of treating sugarcane leaves in harvesting, the impact of the sugarcane leaf burning or trash returning on sugarcane borer in 1st ratoon cane was investigated based on a field comparison experiment. The results showed that Chilo infuscatellus Snellen was as the main sugarcane borer at sugarcane seedling stage; while Chilo sacchariphagus Bojer was the majority at the stage of maturation thought three cane borers including C. sacchariphagus, Argyroploce schistaceana Snellen and C. infuscatellus were mixed occurrence. Comparison between the treatment of leaf crushing and returning to field and with leaf burning, the damaged stalk rates were not significantly different(94.17% and 91.39%, respectively), but both the damaged internode rates(17.23% and 13.57%, respectively) and dead heart seedling rates(43.86% and 12.29%,respectively) were significantly low. The results indicated that leaf crushing and returning to field was beneficial to sugarcane borer control.更多还原