山东干旱瘠薄山地造林新技术试验

New techniques of afforestation on the dry and barren land in the mountainous region of Shandong Province

在山东干旱瘠薄山地，应用平衡根系无纺布容器育苗、乔灌藤科学配置、鱼鳞坑整地、水平阶整地、梯田整地、灌草覆盖、保水剂和常规技术（穴状整地）8种造林技术，对9个树种的造林成活率、栽植初期新梢生长量和侧柏（Platycladus orientalis）苗造林成本进行比较分析。结果表明：应用平衡根系无纺布容器育苗等7种技术与常规技术（穴状整地，对照）相比较，9个树种的平均成活率提高2．6～12．7百分点，栽植当年平均新梢生长量增加5．9～36．3百分点，应用平衡根系无纺布容器育苗技术造林成本降低9．3百分点，其他6种技术比常规技术（穴状整地，对照）的造林成本增加6．2～158．4百分点。应用平衡根系无纺布容器育苗作为新的造林技术，在8种造林技术中，不仅造林成活率最高，在造林之初的新梢生长量亦最大，而且造林成本最低。

The survival rate, tree top growth in early days after plantation and Platycladus orientalis plantation cost of eight afforestation techniques and nine tree species on the dry and barre land of mountainous region of Shandong Province were studied. The afforestation techniques in this experiment were included using no-woven-cloth container seedling with balance-root-system, rational arrangement of tree-shrub-rattan, scale-shaped pit soil preparation, level step soil preparation, terraced field, shrub and grass covering, super absorbent polymer, and traditional afforestation techniques（hole shape soil preparation, CK）. The result showed that the seven new techniques improved the mean survive rate by 2.6%-12.7% than CK. In the first year after plantation, compared to the CK, the mean treetop growth was increased 5.9 %- 36.3 % by using the seven new techniques, the plantation cost was decreased by 9.3 % using the no-woven-cloth container with balance-root-system, while the plantation cost by using the other six techniques was increased 6.2%- 158.4%. Among the eight new techniques, the using of no-woven-cloth container seedling not only made the highest survive rate, but also made the biggest treetop growth in the early days after plantation, as well as the lowest plantation cost.