ABT生根粉在固沙造林中的应用

在河西沙漠绿洲边缘风沙危害重点区,为了提高流动沙丘的造林成活率,以达到防治风沙危害、保护和恢复绿洲边缘植被以及改善生态环境的目的,研究选用沙生植物沙拐枣、花棒、梭梭一年生苗木,分别采用ABT生根粉50mg/kg、100mg/kg、150mg/kg、200mg/kg和500mg/kg不同浓度水平进行处理,以不处理的作为对照(CK),在流动沙丘进行造林对比试验,结果得出3种沙生植物经ABT生根粉处理的树种造林成活率明显高于各自不处理的成活率。其中沙拐枣和花棒两种树种经ABT生根粉150mg/kg浓度处理林成活率最高分别达到了98.462%和81.429%。并且经ABT生根粉处理的造林树种与未处理对照造林树种相比有明显地增加根系数量及对高生长有显著影响作用。梭梭用ABT生根粉处理的造林试验,经调查数据分析显示200mg/kg浓度处理成活率高于其它水平处理及未处理的对照。

A Research on ABT Root-inducing Powder Application in Sand Fixing Afforestation

The experiment was done in pivotal area harmed by sand and wind in brink of Hexi desert oasis in order to protect and resume vegetation in the area and improve environment. The different density solutions of 50mg/kg, 100mg/kg, 150mg/kg, 200 mg/kg of ABT Root-inducing Powder and contrast ones were applied in the sand fixing afforestation to Calligonum sp., Hedysarum scopariun Fish. Et May and Haloxylon ammodenron May Bunge in shifting sand area. It shows that the all plants surviving ratios with ABT Root-inducing Powder solution seedlings are improved obviously comparing with the contrast ones. Particularly, the surviving ratios of Calligonum sp.and Hedysarum scopariun Fish. Et May reach to 98.462% and 81.429% by the ABT solution of 150 mg/kg, and it also has a positive function to the plant height growth, biomass accumulation and root system. However, the surviving ratio of Haloxylon ammodenron May Bunge in the solution of 200 mg/kg is more obvious than those of other density ones and contrast ones.