在塔城地区，大部分年份麦双尾蚜受自然控制因素制约而为害较轻。
In most years, the aphid was controlled under natural regulators, especially its natural enemies and no insecticide application was needed.
在塔城地区，大部分年份麦双尾蚜受自然控制因素制约而为害较轻。
In most years, the aphid was controlled under natural regulators, especially its natural enemies and no insecticide application was needed.
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