A preliminary study on the parameters for rock loosening by scarifiers 松士机松碎矿岩参数的初步探讨
2.
The methods involve soil fertility management as well as reduced tillage . tilling is breaking up and turning the soil to prepare the ground for planting 这些方法包括管理土壤肥力和减少耕作。耕作就是将土壤松碎并翻转，为种植做好准备。
3.
The methods involve soil fertility management as well as reduced tillage . tilling is breaking up and turning the soil to prepare the ground for planting 这些方法包括土壤肥力管理和少耕作法。耕作就是松碎土壤并翻作，为种植做好土壤准备。
