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今年我场水稻蓟马发生普遍,为害严重,虫口密度平均每穗0.4头,被害穗率10—15％。孕穗到抽穗期间受害最重,平均单穗虫数3.15头,有虫穗率82.3—96.0％。受害的稻粒,轻者现褐色斑点,重者成白色(?)粒。个别条田空白粒约占18.4％,估计每亩损失稻谷90—110斤。 针对蓟马为害重、防治面积大,我场药械少、劳力紧张的具体情况,我们试用了六六六烟剂防治,效果很好,即在全场普遍推广。
This year my field of rice thrips occurred widespread, serious damage, insect population average density of 0.4 per ear, spike rate of 10-15%. Booting to the earliest damage during heading, the average number of single earworm 3.15, with worm rate 82.3-96.0%. Injured rice grains, the light brown spots are now, the weight of white (?) Granules. Individual fields accounted for about 18.4% of blank tablets, it is estimated that 90-110 pounds of rice per acre loss. Thrips for the wounded weight control area, my field less drugstore, labor-specific conditions, we tried the six hundred sixty-six tobacco control, the effect is good, that is generally promoted in the audience.