With the area expanding of the corn planting varieties of weeding in the cornfield increase year by year, chemical weed killers have played leading roles.
随着玉米播种面积的逐年扩大，玉米田杂草种类逐年增多，化学除草已占主导地位。
With the area expanding of the corn planting varieties of weeding in the cornfield increase year by year, chemical weed killers have played leading roles.
随着玉米播种面积的逐年扩大，玉米田杂草种类逐年增多，化学除草已占主导地位。
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