水分是作物生长发育的主要生态因素,土壤是农业生产的基本资料和作物生长的重要环境条件。合理的土壤耕作则是求得土壤水分、养分、空气、温度相协调,并使各种因素朝着有利于作物生长方面发展的重要途径。北方旱作农业区降水不足,水土流失严重是农业生产的两个主要障碍。如何保持水土,最大限度地提高水的利用率,是旱作农业必须解决的首要问题。本文拟从保墒蓄水、减少水土流失、改良土壤耕性的角度,结合自己的生产实践,谈谈免耕节能措施的必要性与可能性。 北方旱作农业区主要指秦岭～淮河以北的半干 Water is the main ecological factor of crop growth and development. Soil is the basic data of agricultural production and the important environmental conditions of crop growth. Reasonable soil cultivation is to find the soil moisture, nutrients, air, temperature and coordination, and make a variety of factors in favor of crop growth in the development of an important way. In northern dry farming areas, insufficient rainfall and severe water and soil loss are two major obstacles to agricultural production. How to maintain soil and water and maximize water utilization is the most important issue that must be solved in dry farming. In this paper, we will discuss the necessity and possibility of no-tillage energy saving measures from the perspectives of keeping water at soil moisture, reducing soil and water loss and improving soil tillage. North dry farming mainly refers to the semi-dry Qinling ~ Huaihe north