black streaked dwarf virus of rice

例句：

1. 1. The black streakeddwarf virus of rice is amajor threat to the rice crop.
   水稻黑条矮缩病毒是水稻作物的主要威胁。
2. 2. The disease can be transmitted by insectsand can cause significant yield losses in ricefields.
   这种病可以通过昆虫传播，并在稻田中造成显著的产量损失。
3. 3. Researchers are working on developing new treatments tocombat this virus, which has been apersistent problem for rice farmers.
   研究人员正在研究开发新的治疗手段来对抗这种病毒，这一直是水稻农民的一个持续问题。