论文部分内容阅读
水稻黑条矮缩病（ＲＢＣＤＶ）近年来在台州市连作晚稻上回升迅速，发生严重面积达１．３万ｈｍ２。试验分析表明，导致连晚杂交稻黑条矮缩病严重流行的原因主要有３个：一是大面积的主栽品种抗性差，易感病；二是传毒媒介灰飞虱的田间带毒率高，而其迁飞危害高峰与连晚杂交稻的感病生育期相吻合；三是杂交水稻自身的栽培特点有利于黑条矮缩病的侵染。根据此病发生的规律和特点，提出了在农业防治的基础上，狠抓适期治灰防病的综合治理，可取得较为明显的成效。
Rice black-streaked dwarf (RBCDV) has rapidly rebounded in successive cropping rice in Taizhou in recent years, with a serious area of 13,000 hm2. The experimental analysis showed that there are mainly three reasons leading to the severe epidemic of black-streaked dwarf hybrid rice in late hybrid rice. The first is the large-scale cultivars with poor resistance and susceptible disease, and the second is the field poisoning of brown planthopper Rate, while the peak of migration hazard coincided with the susceptible stage of late hybrid rice. Thirdly, the cultivation characteristics of hybrid rice itself is conducive to the infection of black-streaked dwarf disease. According to the regularity and characteristics of the disease, we put forward that on the basis of agricultural prevention and control, we should pay close attention to the comprehensive treatment of disease-controlling and disease-controlling at the proper time, and obtain more obvious results.