摘 要：
用节水包将贮存水在旱期根据植物的不同需水量,将贮水以点滴或微细流的方式注到植物根部,供植物直接吸收,使灌溉水不蒸发,不渗漏,水分利用率达95%。通过应用试验,集雨袋贮、节水包滴灌具有投资少、效益显著等特点,修建贮量3t的集雨池,100m2的集雨场,并配套可供1hm2果树地使用的节水包滴灌,总投资2143.5元左右,节能省工。在同等立地条件下,较地面灌增产10%～16%,节水65%～76%,提高造林成活率46%。多年的抗旱造林多模式节水试验表明,在自然立地条件差的干旱山区,集雨袋贮、节水包滴灌技术是一项简便易行,投资低,效益好的技术,便于推广。
译 名：
Study on development of the products of rain-collecting bag and their application benefits
作 者：
YANG Ronghui, WANG Yanping, ZHANG Hai, MA Yimin (College of Resource and Evironment, Northwest SciTech University of Agriculture and Forestry, Yangling, Shaanxi 712100, China)
关键词：
collecting rainfall and storing in bags; developing water-saving bag; benefit
摘 要：
By using the watersaving bag, the stored water is injected to plant roots for direct absorption in the forms of drips of miniflow based on the water requirement of plants. The dripped water is neither evaporated nor percolated, and the water use rate reaches 95%. Watersaving bag for drip irrigation is characterized by little investment and outstanding benefit. The total cost of a 3 t raincollecting pond, a 100 m2 raincollecting yard and watersaving bags for 1 hm2 of fruit trees is about 2 143.5 yuan. Under the same stand conditions, yield of drip irrigation is increased by 10%~16% compared with that of surface irrigation, water is saved by 65%~76%, and survival rate of afforestation is raised by 46%. The experiments of droughtresistant afforestation show that the technique of collecting rainfall and drip irrigation with watersaving bags is simple, lessinvested and beneficial to be extended in arid mountainous areas.
