Conservation tillage is mainly based on mechanized operations, adopting less tillage or no-tillage methods, reducing tillage as long as seed germination can be ensured, covering the surface with crop straws and residues, and mainly using pesticides to control weeds and diseases and pests. A farming technique. 46. ​​What is the main content of conservation tillage?
1 no-tillage sowing fertilizer technology.
2 straw residue and topsoil processing technology.
3 weeds and pest control technology.
4 deep loose technology.