飞虱属小型害虫,繁殖很快,大量集中在稻丛下部,或刺吸汁液或产卵器刺破叶鞘、叶片,使水稻丧失水分,生长迟滞,变黄变矮,甚至基部变黑腐烂,整株倒伏或枯死,造成“冒穿”“、黄塘”、“塌圈”等危害状。在一些地区,水稻秧田期是灰飞虱迁入和传毒的高峰 Planthopper is a small pest, reproduce quickly, a large number of concentrated in the lower part of the rice plex, or sucking juice or ovipositor puncture leaf sheath, leaves, the rice loss of water, growth retardation, yellowing becomes shorter, or even black at the base of decay, The whole plant lodging or dead, resulting in “wearing ”, “yellow pond ”, “collapse circle ” and other hazards. In some areas, rice seedling stage is the peak of the migration and transmission of SBPH