苏南稻区二化螟上升原因及对策探讨

THE REASONS OF THE INCREASE OF RICE STALK BORER IN PADDY FIELD AND THE APPROACHES OF CONTROLLING STRATEGIES IN SOUTH JIANGSU PROVINCE

从横向和纵向两个方面分析，苏南水稻二化螟上升的主要原因是水稻品种结构调整，粗秆大穗型品种的推广。栽培方式、抗性变化等因素对螟虫的上升也起了促进作用。根据苏南实际，对水稻二化螟的防治应采取以栽培避螟为基础的综合治理措施。

With horizontal and vertical analysis, the main reason of the increase of rice stalk borer population in south Jiangsu province is by adjusting the structure of rice cultivars and extending the cultivars with thick stalk and big spike. The culture form and the change of resistance promote the increasing of the rice stalk borer. Based on the reality in the south Jiangsu province, the best control strategies on rice stalk borer are the integrated management based on restructuring cropping system to avoid the borers.