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我县位于贵州省东南部,海拔最低348米,最高1,626米,年平均气温16.8℃,年降雨量1217.5毫米。多数稻田分布在海拔400—1,000米的塝坡、山弯及沟冲地区,多为带状梯田和山弯梯田,有利于稻秆蝇 Chlorops oryzae Matsum-ura的发生和为害。从1972年发现该虫为害以来,近年其为害渐见加重。据调查,1980年第二代发生面积已占水稻面积的20—22％,每亩损失粮食5％以上。1981年发生面积增至为27—32％。成灾面积占发生面积的43—50％,重灾蚯块每亩损失粮食一般达25—30％,最高可达40％以上。因此,该虫已成为我县七十年
My county is located in southeastern Guizhou Province, the lowest 348 meters above sea level, the highest 1,626 meters, the annual average temperature of 16.8 ℃, the annual rainfall of 1217.5 mm. Most of the paddy fields are located in the slopes of 400-1000 meters above sea level in the slope slopes, mountain bend and ditch Chong area, mostly striped terraces and mountain terraces, which is conducive to the occurrence and damage of the Chlorops oryzae Matsum-ura. Since it was discovered that the insect was devastating in 1972, its harm has gradually increased in recent years. According to the survey, the area of the second generation occurred in 1980 accounted for 20-22% of the total paddy area, losing more than 5% of grain per mu. Occurred in 1981 area increased to 27-32%. Disaster area accounted for 43-50% of the area occurred, heavy losses of earth per mu loss of food generally up to 25-30%, up to 40% or more. Therefore, the worm has become my county for seventy years