长三角地区稻麦轮作田机械化保护性耕作技术进展

20世纪中叶起源于美国的保护性耕作技术，发展至今已在世界5大洲许多国家应用。我国已全面部署实施北方旱农区保护性耕作技术的示范推广，而南方稻麦两熟区及双季稻区尚处于保护性耕作多样性与适应性的试验研究阶段。该文以长三角地区为重点，回顾了稻麦轮作田的传统精耕细作技术和机具的旧貌，分析了技术改革的必要性，历数近30年来的技术进步。依据实地调查观察和立项试验研究的直接经验并综合传媒资讯，分析评价目前主推技术模式和典型机具的成败得失，建议向“少动土、多覆盖”方向深入探索，农机农艺融合，加快技术和机具创新。 

Mechanization Conservational Tillage Technology Progress in Rice-Wheat Rotation Field in the Yangtze River Delta Area

Conservational tillage technology originated in the United States had been used in many countries of the five continents on the world by development from the mid-20th century to now. It had been fully demonstrated and extended conservational tillage technology in the arid area of north of China，while it was still in the stage of experiment and research about conservation tillage diversity and adaptability in the wheat-rice double cropping area and double cropping rice region of south of China.Taking Yangtze River Delta region for emphasis，traditional precision farming technology and the past of equipment were recalled in the rice-wheat rotation field，analyzed necessity for technology innovation，and recited the technological advances in the past 30 years. Based on the investigation and experiment，combined with the media information，successes and failures about the main technology models and typical equipment were analyzed and evaluated at present，and further explorations about‘less ground-breaking，multi-covering’，combination of farm machinery with agronomy，and acceleration innovation of technology and machinery were proposed.