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为了探讨盐碱地区咸水灌溉对造林的影响,以便有效利用水资源,提高造林绿化水平,笔者采用咸水直灌和轮灌2种技术,用不同矿化度咸水(0、2、5、8、12、15 g/L)对9种造林绿化树种进行灌溉试验,研究不同灌溉条件下各树种的表型特征。结果表明:在不影响树种生长的情况下,绒毛白蜡、刺槐和紫穗槐造林绿化可用12 g/L咸水轮灌,盐柳和竹柳可用8 g/L咸水轮灌,中国白蜡、小叶白蜡、杜梨和沙枣可用5 g/L咸水轮灌。根据各树种成活情况初步确定:盐柳、竹柳和中国白蜡不适宜咸水直灌,其他6种树种适宜咸水直灌,耐受能力依次为:沙枣(15 g/L)>杜梨(12 g/L)>绒毛白蜡(8 g/L)>紫穗槐、小叶白蜡、刺槐(5 g/L)。
In order to discuss the influence of saltwater irrigation on afforestation in saline-alkali region in order to effectively use water resources and improve the afforestation level, the authors adopted two technologies, salt water straight irrigation and rotary irrigation, with different salinities (0, 2, 5, 8, 12 and 15 g / L) were used for irrigation experiments on nine afforestation tree species to study the phenotypic characteristics of each species under different irrigation conditions. The results showed that 12 g / L saltwater irrigation could be used for afforestation of villus alder, Robinia pseudoacacia and Amorpha fruticosa without affecting the growth of tree species. Leaflet white wax, pears and dates can use 5 g / L saline irrigation. According to the survival of each species, it was initially determined that Salix, Tamarix and Chinese Wax were not suitable for direct irrigation with salt water, while the other six species were suitable for direct irrigation with saline water. (12 g / L)> fluff white wax (8 g / L)> Amorpha fruticosa, leaflet white wax, black locust (5 g / L).