水稻黑条矮缩病发生发展规律研究

Study on Occurrence and Developing Law of Rice Black Streaked Dwarf

[目的]探索水稻黑条矮缩病的发生发展规律。[方法]采用感病品种,秧田期不用药防治病毒传播媒介,大田期考查各处理的发病情况。[结果]水稻黑条矮缩病病毒的感染是在秧田期,但在秧田期不表现症状,大田发病率与秧苗素质的高低呈现反相关;无纺布覆盖可以避免秧苗被灰飞虱接触危害,秧苗带毒率低,能较好地控制发病率。[结论]研究结果为生产中采取有效的防治水稻黑条矮缩病措施提供了参考。

[Objective]The aim was to ex- plore occurrence and developing law of rice black streaked dwarf. [Method] Us- ing susceptible, the occurrence of differ- ent treatments in the field period were in- vestigated, without medication anti-virus media in seedling period. [Result] Rice black streaked dwarf virus infection was in the seedling stage, but did not show symptoms in the seedling stage. Daejeon morbidity and quality of seedlings showed the level of anti-correlation. Coverage with nonwoven could avoid Laodelphgax striatellus exposure hazard seedlings, so could control morbidity bet- ter. [Conclusion] The results provided references for taking effective control of rice black streaked dwarf in the produc- tion.