关键词: 旱林作业, 集流, 深栽, 效益

Abstract: Big hole and deep planting method is worth spreading in arid and sandy zone. Big hole can improve site index and site environment. Deep planting is favorable for large root system forming. These will heighten the water transportation and wind prevention ability of plant. (2) Some integrated retaining and perserving soil moisture measures of water, container nursering and appling water absorbent are suitable for afforestation on barren mountain area of semi arid and arid zone. Tree species should be xerophyte such as Platycladus orientalis and Tamaricaceae L etc.. For reducing ineffective water evaporation and percolation, drip irrigation at roots zone should be adopted to improve and perfect the dry afforestation technology.

Key words: Dry afforestation, Flow concentration, Deep planting, Effect