从约翰迪尔产品看美国保护性耕作技术现状

Status of Conservation Tillage in America and John Deere’s Equipments

介绍了美国保护性耕作的概念、保护性耕作设备及耕作模式特点,分析了切茬碎土类、深松除草整地类、条状少耕类和联合作业机型(复式作业)4种类型的JohnDeere公司保护性耕作机具和免耕播种机的主要功能及特点。同时,总结了免耕播种机3种结构形式的开沟、播种、覆土、镇压和防堵塞等构成组件的关键设计技术,以及对发展我国保护性耕作技术的启示。

In review of the conservation tillage definition, equipments and tillage systems in America, the features of the planters and conservation tillage equipments were introduced. The conservation tillage equipments include Cultivator, Min-Till Ripper, Disk, and Mulch Ripper. There are three kinds of no-till planter subassembly styles on furrow opener, seeding, residue anti-blockage etc, which are the key design technique of the no-till planter. It will give some references for successfully adopting conservationtillage systems in china.