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甘肃省农机部门自2000年起开展了保护性耕作推广应用,经过10多年的不断探索和努力,截至2011年,甘肃省已建立国家级示范县14个,省级示范县8个,保护性耕作示范面积达10万hm2,初步形成了保护性耕作模式和机具应用体系,为保护性耕作健康持续发展提供了有利的技术支撑。1技术模式(1)河西及沿黄灌区。区域内水资源紧缺,干旱少雨,地表、地下水资源严重不足,高扬程灌区水资源开发利用难度大,灌溉水利用率在50%以下,水粮生产率只有0.85kg/m3。通过应用免耕覆盖播种、少耕覆盖播种、秸秆覆盖垄播沟灌种植以及留茬留膜覆盖抑蒸种植等技术,
Since 2000, the agricultural machinery department of Gansu has carried out the promotion and application of conservation tillage. After 10 years of continuous exploration and efforts, as of 2011, Gansu Province has established 14 state-level demonstration counties, 8 provincial-level demonstration counties and conservation tillage Demonstration area of 100,000 hm2, the initial formation of a conservation tillage model and machine application system for the sustainable development of conservation tillage provides a favorable technical support. 1 Technical mode (1) Hexi and along the Yellow Irrigation District. In the region, there is a shortage of water resources, aridity and lack of rainfall, serious shortage of surface water and groundwater resources, and the development and utilization of water resources in high-lift irrigation areas is difficult. The utilization rate of irrigation water is below 50% and the water and grain production rate is only 0.85kg / m3. Through the application of no-tillage sowing, planting less tillage sowing, furrow planting mulching with straw mulch and stubble mulching with film-mulching and other techniques,