其垂直分布幼虫主要集中在离土表6厘米内，土茧95 %以上分布在离土表3厘米内，幼虫结茧有向上爬习性。

The vertical distribution shows larvae are mainly distributed within 6 cm below the soil surface, and 95 percent of the cocoons crowd within 3 cm below the surface.

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倒土、回填、挖坑、修坡、找平、压实、装车、爬托盘等。 在校期间让每位学员学会以上项目。

After training, you can master the skills of soil dumping, backfill, digging, grading, leveling, compacting, loading and crowding.

youdao

倒土、回填、挖坑、修坡、找平、压实、装车、爬托盘等。 在校期间让每位学员学会以上项目。

After training, you can master the skills of soil dumping, backfill, digging, grading, leveling, compacting, loading and crowding.

youdao