白于山区生态环境脆弱，立地条件差，植被稀疏。为丰富白于山区物种多样性，改善生态环境，本研究通过将三种针叶树在白于山区进行造林试验，采用保水剂、覆膜等措施，筛选出适合三种针叶树的抗旱造林技术。结果表明:(1)樟子松(Pinus sylvestris var mongolica)、彰武松(Pinus densiflora var。zhangwuensis)和班克松(Pinus banksiana)在横山区和靖边县均能存活，存活率均在48％以上;(2)在横山区和靖边县使用保水剂2的班克松处理存活率最高，分别达68。89％和73。33％;(3)三种针叶树在靖边县存活情况均优于横山区;(4)在横山区，使用保水措施覆膜和保水剂2的樟子松生长情况显著优于CK和保水剂1处理，使用覆膜处理的彰武松显著优于其他处理，使用保水剂2的班克松生长最好;(5)在靖边县使用保水措施覆膜和保水剂2的樟子松和彰武松生长情况较优，班克松使用覆膜处理生长情况最优。三种树种均适合在白于山区栽植，且班克松适合使用保水剂2，樟子松和彰武松可选择使用保水剂2或覆膜措施。
Afforestation Techniques of three Kinds of Conifers for Water Conservation in Baiyu Mountainous Area
The ecological environment in Baiyu Mountain Area is fragile,with poor site conditions and sparse vegetation.In order to enrich the species diversity of Baiyu Mountain and improve the local ec-ological quality,three kinds of conifers were tested in the Baiyu mountain area,and the water-retai-ning agent and film coating were applied together and a set of water-preserving afforestation technol-ogy suitable for three kinds of conifers.The results showed that Pinus sylvestris var mongolica,Pi-nus densiflora var.zhangwuensis and Pinus banksiana could survive in Hengshan district and Jingbi-an county,with survival rates of more than 48％;(2)In Hengshan district and Jingbian County,the survival rate of P.banksiana treated with water-retaining agent 2 was the highest,reaching 68.89％and 73.33％,respectively;(3)The survival of the three conifers in Jingbian county was better than that in Hengshan district;(4)In Hengshan district,the growth of P.sylvestris var mongolica trea-ted with water-retaining measures and water-retaining agent 2 was significantly better than that treated with CK and water-retaining agent 1,the growth of P.densiflora var.zhangwuensis trea-ted with film mulching was significantly better than other treatments,and the growth of P.banksiana treated with water-retaining agent 2 was the best;(5)The growth of P.sylvestris var.mongolica and Pinus densiflora var.zhangwuensis in Jingbian county,where water-retention measures inclu-ding mulching film and water-retaining agent 2 were used,was relatively superior.For P.banksi-ana,the application of mulching film resulted in the best growth.All three tree species are suitable for planting in the Baiyu Mountains,and P.banksiana is particularly suited to the use of water-re-taining agent 2.P.sylvestris var.mongolica and Pinus densiflora var.zhangwuensis can optionally use either water-retaining agent 2 or mulching measures.
万方数据
维普
