保护性耕作是采用机械化作业,利用前茬作物的秸秆和残茬覆盖地表,少耕或免耕,将耕作减少到只要能保证种子发芽即可,在直立秸秆或秸秆粉碎还田条件下直接进行播种,并主要用农药来控制杂草和病虫害的一种耕作技术。机械化深松是保护性耕作配套机械化技术主要内容之一,有两种作业形式:一种是全方位深松,可完成连片深松。深松作业后,土壤疏松,不破坏土层,在底部形成鼠道,使土壤渗透能力显著提高,同时具有抗旱保墒和防涝排碱作用。另一种是间隔深松,可形成虚实并存的土壤结构,虚部深蓄水,实部提墒供水,打破长期翻耕形成的犁底层,有利于雨水的入渗与作物根系的发育,改善了土壤的透水透气 Conservation tillage is the use of mechanized operations, the use of straw and stubble of the former crop covering the surface, less tillage or no tillage, reducing tillage as long as it can ensure the seed germination, direct straw or straw crushed to the field conditions A farming technique of sowing and mainly controlling weeds and pests with pesticides. Mechanized subsoiling is one of the main contents of the mechanization of conservation tillage. There are two types of operation: one is subsoiling in all directions, and the subsoiling can be completed. Subsoiling operation, the soil loose, does not destroy the soil, the formation of rats at the bottom of the road, so that significantly improve soil permeability, drought and soil moisture at the same time and waterlogging and alkali effect. The other is loosely spaced, can form the soil structure of the coexistence of the actual situation, the imaginary part of the deep water storage, real water supply to mention moisture, breaking the plow plow formed by long-term tillage is conducive to the infiltration of rainwater and crop root development and improvement Permeable and breathable soil