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黄骅市地处渤海沿岸,属滨海盐渍潮土。近些年来干旱少雨,年降雨量不足300毫米,是正常年份的一半,土壤盐碱程度越来越重,恶劣的立地条件严重影响了造林成活率。利用盐碱地造林,由于土壤积盐过多,使树木的根系吸收水分、养分非常困难,形成生理干旱,造成树木萎蔫甚至死亡。同时,盐碱的腐蚀,能使树木细胞组织受到破坏,新陈代谢功能被抑制,过多的盐分,使土壤结构不良,肥力减低,严重影响树木的正常生长和发育。作者经过多年的生产实践,摸索出了提高盐碱地上造林成活率的几种方法,现简介如下:
Huanghua is located along the coast of Bohai, a coastal saline soil. In recent years, arid and rainy, annual rainfall of less than 300 mm, is half of the normal year, the degree of soil salinity more and more heavy, poor site conditions seriously affected the survival rate of afforestation. The use of saline-alkali afforestation, as soil salt accumulation too much, so that the roots of trees absorb moisture, nutrients is very difficult to form a physiological drought, resulting in wilting trees and even death. At the same time, salt and alkali corrosion, can make tree tissue damaged, metabolic function is inhibited, too much salt, so that soil structure is poor, fertility, seriously affecting the normal growth and development of trees. After many years of production practice, the author explored several ways to improve the survival rate of saline-alkali plantation on the ground, and is summarized as follows: