窄条纱网沙障和保水凝水剂对梭梭造林成效的影响

为提高干旱和半干旱地区梭梭造林成活率,同时探索降低梭梭造林成本的方法,将窄条纱网沙障、凝水剂和保水剂用于梭梭造林,运用综合评价法,分析梭梭造林成效和成本。结果表明:在流动沙地布设窄条纱网沙障后,梭梭成活率显著提高,并随设置沙障长度的增加而增加;梭梭造林适合采用40 cm窄条纱网沙障,此时梭梭成活率为对照的3.3倍,成本比对照增加19.1%。山东保水剂和青海保水剂采用湿施法效果最显著,梭梭造林适合采用青海保水剂湿施法,其成活率比山东保水剂高2.3%,成本却低4.9%。采用40 cm窄条纱网沙障和青海保水剂湿施法进行梭梭造林成效较好。

Influence of Strip Gauze Sand Barrier and Water-retaining Agent on Survival Rate of Haloxylon ammodendron

In order to improve the high survival rate and reduce the afforestation cost of Haloxylon ammodendron,Strip gauze sand barrier,water-retaining agent and water-condensing agent have been used in afforestation of H.ammodendron.The effects and costs for afforestation of H.ammodendron have been analyzed by use of the comprehensive evaluation method.The results show that after establishing strip gauze sand barrier in moving sandy land,the survival rate of H.ammodendron has significantly increased,which has increased with the increase of length of sand barrier.It is suitable to adopt 40 cm strip gauze sand barrier for afforestation of H.ammodendron,the survival rate is 3.3 times than that of CK,and the cost has increased 19.1%higher than CK.For SDBSJ and QHBSJ,the effect of wet methodology is the most significant.For afforestation of H.ammodendron,it is suitable to use wet methodlogy of QHBSJ,the survival rate is 2.3%higher than that of SDBSJ,however the cost is 4.9%lower than that of SDBSJ.