论文部分内容阅读
在我省鲁北、湖西和渤海沿岸分布着大面积盐碱地,胶东沿海岸,小清河流域亦有零星分布,总面积达1600多万亩,多为氯化物盐土,硫酸盐次之,重碳酸盐和碳酸盐含量极少。其中渤海沿岸约400万亩,呈大片集中分布,盐碱化程度较高,绝大部分地区林木稀少或是尚未开垦的盐碱荒地。几十年来,这些地区采取挖沟排盐、修筑条台田、蓄淡压碱、淡水洗盐、生物改良等综合措施治理,林业建设也获得一定的发展。但是,盐碱地造林技术尚未普及,不少地方仍栽不活树,针对此情况,再来谈谈盐碱地造林技术措施,供参考。
A large area of saline-alkali land is distributed in the Lubei, Huxi and Bohai coasts in our province. There are sporadic distributions along the coast of Jiaodong and Xiaoqinghe watershed with a total area of more than 16 million mu, mostly chloride salts, sulphate followed by bicarbonate Salt and carbonate content is minimal. Among them, about 4 million mu of the coast of the Bohai Sea are concentrated in large areas, with a high degree of salinization. Most of the areas are sparsely populated or have not been reclaimed. In these decades, forestry construction has also achieved certain development through such comprehensive measures as digging ditches and salt drainage, building paddy fields, storing light alkali, washing salt with fresh water, and improving biological systems. However, afforestation technology of saline-alkali land has not yet spread, many places still planted no living trees, in view of this situation, then talk about the technical measures of afforestation in saline-alkali land for reference.