【摘要】 提高渭北原区农田水分（自然降水、补充灌水）利用效率是本区旱作农业技术的核心，从蓄水、保水、节水和高效用水４个技术环节组成的一及时适度深耕、合口过伏（或越冬），修筑梯田、平整土地，耕作保墒，覆盖栽培，增施有机、无机肥料、培肥地力，合理安排作物布局，选用抗／耐旱作物及优良品种，拦蓄地表水、开采地下水，实施节水灌溉等９项配套技术已在当地农业生产中发挥了显著作用。更多还原

【Abstract】 Improving water use efficiency of farmland water(including natural rain-fall water and supplementary irrigation water)in the Yuan area on Weibei Rainfed Highland is the core of rainfed agricultural technique in this region. This technical pack-age consists of 4 technical key links,i.e. water storage,water conservation,water sav-ing and high water use efficiency including 9 perfection technical measures such as sub-soiling in time and at the right time,pulverizing land for oversummering or overwinter-ing,constructing terraces ,levelling lands, tilling to preserve moisture for the top soil,mulching cultivation,increasing application of organic and inorganic fertilizers, better-ing land fertility,rational arrangement of crop patterns,selecting drought resistant tol-erant crop varieties with fine qualities ,checking and storing surface water,tapping sub-surface water resources and implementing water─saving irrigation,which has beenplaying a significant role in local agricultural production.更多还原