【摘要】 通过对库布齐沙漠东北缘新月型沙丘段进行沙柳造林技术试验研究,得出如下结论:①分别用浓度为100 mg/L的ABT1号生根粉溶液和水对沙柳穗条浸泡处理后,进行扦插造林,3个月后调查结果表明,造林成活率比其对照分别提高了12.4%和10.1%;穗条细根发育数量提高28.2%和23.2%,对穗条分枝数、枝条高生长和基径生长影响不显著。②设置沙柳机械沙障与未设林地年风蚀土层厚分别为23.6 cm/a和95.8cm/a,设置沙障后土层风蚀量平均减少了75.4%,固沙效果十分明显。行列式林地土壤风蚀量与行距相关,行距2 m与行距4 m相比,风蚀量约降低16.1%。③穗条栽植数量每穴2条较每穴4条,造林成活率和幼林保存率分别提高近5.0%和50.3%,该地区选择坡度5°～15°的垂直于主风向的平缓坡面中、下坡位为造林适宜地。更多还原

【Abstract】 Based on the research on afforestation technology of Salix psammophila in high and large moving dune in Kubuqi desert,the result showed,① Soaked the seedlings of Salix psammophila with ABT 1 solution and water,the afforestation survival rate could be increased by 12.4% and 10.1%,the number of roots could be increased by 28.2% and 23.2% after planting for 3 months.② Annual amount of soil erosion with sand barrier was 23.6 cm/a,and the one was 95.8 cm/a without sand barrier.The amount of soil erosion was relative to line spacing.The amount of soil erosion with line spacing at 2 m was reduced by 16.1% than the one at 4 m.③ Compared with 2 cuttings and 4 cuttings in each hole,the survival rate and preserved rate of Salix psammophila seedlings could be increased by 5.0% and 50.3% separately.In this area,the middle and lower slope with the gradient from 5° to 15° could be chosen as the suitable terrain for Salix psammophila,which was perpendicular to the main wind direction.更多还原