科尔沁沙地西部樟子松抗旱造林试验

Experiment on Drought-resistant Afforestation with Pinus sylvestris var. mongolica Litv. in West of Keerqin Sandy Land

为了提高科尔沁沙地西部樟子松造林成活率和保存率 ,在翁牛特旗玉田皋乡进行了一系列樟子松抗旱造林试验。结果表明 :用 3～ 5年生容器苗 ,采取局部块状整地 ,坐水打浆栽植 ,施用 ABT生根粉、保水剂 ,覆盖地膜 ,培越冬防护土等系列抗旱造林技术措施 ,幼树根系主要分布土层 ( 1 5～ 5 0 cm )土壤含水量比对照提高2 5 %～ 60 % ,成活率和保存率达 85 %以上 ,比对照提高 1 5 %～ 30 %。

In order to increase the afforestation survival rate and preserved rate of Pinus sylvestris var. mongolica Litv. in west of Keerqin Sandy land, a series of tests have been done in Yutian'gao County, Wengniute Banner. The results show: after adopting a series of droughtresistant afforestation technology measures such as using container seedlings of 3 ~ 5 years, partial ground making in blocks, planting by watering, using ABT rootpromoting powder and waterprotected agent, covering film, banking up for overwintering, the moisture content of soil in main distributing layer (15 ~ 50cm) of root system of young trees has raised 25% ~ 60% than CK, the survival rate and preserved rate have been over 85% with raising 15% ~ 30% than CK.