保护性耕作在全国已经实施了5年时间,辽宁省从1999年已经开始示范。全省除了15个国家级示范县以外,还有21个省级示范县,共有36个县(市)开展了示范推广工作。实践证明这项技术在北方广大的旱作地区有广泛的适用性和巨大的推广潜力。当前要加快技术的普及、应用步伐,要重点在示范 Conservation tillage has been implemented throughout the country for five years, and Liaoning Province has started demonstrations since 1999. In addition to the 15 state-level demonstration counties in the province, there are 21 demonstration counties in the province and a total of 36 counties (cities) carried out demonstration and extension work. Practice has proved that this technology has a wide range of applicability and huge promotion potential in the vast dry farming areas in the north. At present, we must speed up the popularization of technology and the pace of application and focus on demonstration