不同抗旱措施在干旱半干旱地区公路绿化中的应用研究

干旱半干旱地区公路绿化时,幼树成活期间的水分供应很难满足,因而造成植树成活率低,见效慢。采用地膜、保水剂、生根粉几种抗旱措施,对馒头柳的土壤含水量、生长情况、叶绿素含量及成活率进行了比较试验。结果表明,这些措施均有一定的抗旱作用,其中保水剂效果最佳,其次为地膜,最后是生根粉。因此可以认为在干旱地区公路绿化,土壤含水量较低时,抗旱措施能保持幼树的稳定生长,提高公路绿化率。从经济角度考虑,树盘覆盖地膜成本低,是干旱地区公路绿化的最佳供水途径。

Study on the Application of the Method of Drought Resistance in the Highway Afforestation

In arid and semi-arid area,the low survivor ratio and the effect of afforestation were common in afforesting the highway.The method: coverage of plastic film,water-retaining agent,root inducing powder to Hankow willow was used in the experiment that aimed to increase water content of soil,chlorophyll content of leaf,to promote the survivor ratio.The result showed that: compared with control,the influence of these methods was significant efficiency.Among these methods,the effect of root inducing powder was good one and the water-retaining agent was the best.These methods all could improve the survivor ratio,maintain normal growing of the plant,and from economic angles,the plastic film cultivation technique was an optimum water supply way for afforesting the highway.