directed drilling meaning in Chinese

定向钻进
定向钻井

The type is temporarily called root - no - tillage with only the root left in soil and direct drilling ; sowing directly and placing the past plant stalk orderly over the soil is called mulch - no - tillage . they are both of the content when refers to no - tillage generally and are adapted to keep moist in or keep from soil erosion in drying land
作物收获后，作物地上部被从地表带走，地下部的根系等原位保留，直接播种的免耕方式暂时称为残茬免耕；直接播种，并将前作地上部有秩序地平铺在地表进行覆盖的免耕称为覆盖免耕。