滨海盐碱地大果沙棘适应及耐盐碱试验

Tests on the Adaptation and Salt and Alkali Resistance of Hippoph ae rhamnoides L. in Seashore

通过对引进的15个大果沙棘新品种在山东省滨海盐碱地的生长定位观测和综合评判,研究了大果沙棘的综合适应性、造林成活率2个抗逆性因子,分析得出在滨海盐碱地大果沙棘适应性较强的品种为阿尔泰新闻、阿楚拉、辽Ⅱ。结果表明大果沙棘在含盐量0. 4%以下的滨海盐碱地造林成活率可达60%以上;含盐量超过0.7%,成活率呈下降趋势;达到0. 8%以上时,则很难成活。指出了大果沙棘在滨海盐碱地造林具有较宽的适应范围,为盐碱地生态经济树种选择和开发利用提供理论依据。

In this paper, two resistance factors, the integrated adaptation and survival ra te of afforestation for Hippophae rhamnoides L. were studied through observi ng and evaluating the growth of 15 new species of Hippophae rhamnoides L. wh ich were introduced into salt and alkali land of seashore in Shandong province. The results indicted that species from Aertaixinwen, Achula, LiaoⅡ were more ad aptive to salt and alkali land of seashore. The survival rate of Hippophae rha mnoides L. could reach over 60% when salt content was under 0.4%, and the surv ival rate showed a declining tendency when the percent of salt was over 0.7%, wh ile Hippophae rhamnoides L. was hard to survive when salt content was over 0 .8%. It proved that the adaptive range of Hippophae rhamnoides L. was very b road on salt and alkali land of seashore. This study would provide a theoretic b asis for the selection of ecological and economic species for salt and alkali la nd of seashore.