论文部分内容阅读
水稻黄萎病的虫媒传染 1.黑尾叶蝉传毒(现已知本病病原为类菌质体——译者注) (1)虫的吸毒用无毒黑尾叶蝉2～3龄若虫,先绝食约1小时,再在病稻上吸汁不同时间,调查有无吸毒。结果在病稻上吸汁1～5分钟全部虫子不传毒,10分钟30头中有1头(3％),30分钟30头中有10头(33％),1小时30头中有23头(77％),3小时以上有91～100％个体传毒。在病稻上吸汁1小时左右,几乎全部虫吸毒。其次,用同样的无毒若虫,在一天的上午和下午两次,在病稻上吸汁5分钟,连续1～5天。结果在病稻上吸汁1～4次(合计5～20分钟)的个体不传毒,吸汁6次(合计30分钟)14头中
Pest infection of Verticillium wilt 1. Black tail leafhopper poisoning (now known pathogenic bacteria for the body of the bacteria - Translator’s Note) (1) worm drug use non-toxic black tail leafhopper 2 ~ 3 Age nymphs, the first hunger strike for about 1 hour, then suck the juice in the sick rice at different times, to investigate whether there is drug abuse. As a result, all insects did not transmit the virus for 1 to 5 minutes on the diseased rice, with 1 (10%) out of 30 heads in 10 minutes, 10 heads (33%) out of 30 heads in 30 minutes, 23 heads out of 30 heads in 1 hour (77%), more than 3 hours 91 to 100% of individual poisoning. Suction juice in the sick about 1 hour, almost all insects drug use. Secondly, use the same non-toxic nymphs, in the morning and afternoon twice a day, suck the juice on the sick rice 5 minutes for 1 to 5 days. As a result, individuals sucking juice 1 to 4 times (5 to 20 minutes in total) on the diseased rice were not poisoned, and the juice was sucked 6 times (for a total of 30 minutes) in 14 heads