旱林作业对水分因子再分配研究

Effects of Dry Afforestation Technology on Water Reallocation

水分因子严重制约着干旱半干旱条件下林木的生长，因地制宜地采用各种造林技术，最大限度地创造集流条件，合理利用水资源，是干旱造林研究的主要课题。根据多年的试验观测与研究，对旱林作业技术措施的实践应用效果，进行了综合评价和分析研究。

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.