4种灌木流动和半流动沙地造林技术研究

Afforestation Techniques of Four Shrub Species in Shifting and Semi-immobile Sandyland

从不同立地条件类型、造林时间、造林密度、不同苗木规格等方面进行了造林试验研究,结果表明:在流动沙丘,半固定沙丘上营造固沙林,锦鸡儿、黄柳、胡枝子、紫穗槐4种灌木虽然都是旱生植物,但其耐旱程度有所不同,锦鸡儿适应的立地条件类型为3m以下的沙丘;紫穗槐、胡枝子在沙区适应的立地条件是1m以下的沙丘、缓起伏的沙地和丘间低平地;黄柳栽植在高3m以上的流沙上、中部表现良好。

Under different site types,afforestation experiments of four shrubs were conducted by adopting different afforestation time,planting density and different seedling specifications.Result shows that sand-fixation forest were constructed on shifting dunes and semifixed dunes.Although Caragana korshinskii,Salix gordejevii,Lespedeza bicolor,Amorpha fruticosa are all xerophyte,their drought tolerant degree is different.Caragana sinica adapts to the type of dune below 3m.The site condition of Amorpha fruticosa,Lespedeza bicoloris under 1min sand area,slow ups and downs of the dunes flat ground among dunes;Salix gordejevii planted in the upper and middle of shifting sand with the height being 3mperformed optimal.