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林业科学 ›› 2012, Vol. 48 ›› Issue (10): 150-156.doi: 10.11707/j.1001-7488.20121024

• 研究简报 • 上一篇    下一篇

塔里木河下游地区不同滴灌频率下沙枣防护林成活率与生长量特征

赵新风1, 徐海量1,2, 张鹏1, 刘新华1, 洪辉3   

  1. 1. 中国科学院新疆生态与地理研究所 绿洲生态与荒漠环境重点实验室 乌鲁木齐 830011;2. 新疆生态与地理研究所阿克苏水平衡试验站 阿拉尔 843300;3. 塔里木河流域管理局 库尔勒 841000
  • 收稿日期:2011-12-15 修回日期:2012-03-15 出版日期:2012-10-25 发布日期:2012-10-25

Survival Rate and Growth Characteristics of Elaeagnus angustifolia Shelterbelts under the Different Drip Irrigation Frequency in the Lower Reaches of Tarim River

Zhao Xinfeng1, Xu Hailiang1,2, Zhang Peng1, Liu Xinhua1, Hong Hui3   

  1. 1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences Key Laboratory of Oasis Ecology and Desert Environment Urumqi 830011;2. Water Balancing Test Station of Chinese Academy of Sciences Aral 843300;3. Xinjiang Administration of Tarim River Basin Korla 841000
  • Received:2011-12-15 Revised:2012-03-15 Online:2012-10-25 Published:2012-10-25

关键词: 沙枣, 滴灌频率, 成活率, 生长量, 防风效益, 塔里木河下游

Abstract:

In this study, we investigated the impact of frequency of drip irrigation on survival and growth of shelterbelts in an extremely arid area, which would be important information in determining scientific irrigation regime of shelterbelts, and defensing stability of shelterbelt systems in arid areas. To determine an efficient irrigation frequency of drip irrigation on shelterbelt of Elaeagnus angustifolia in the extreme arid area, the present study evaluated the effect of four irrigation frequencies (irrigate one time every 5, 10, 20, and 30 days, respectively) on survival rate, basal diameter, tree height, crown, and the protective effect against wind through three years of field monitoring. The results showed: (1) The T2 treatment had significantly (P<0.05) different the survival rate from the T1 and T4 treatments, but not significantly different with the T3 treatment. (2) With T2 treatment, a tree needed irrigation of 540 L annually. In a plantation model of 1 m × 3 m, a hectare of land was planted with 2 625 trees, and the water consumption in the first four years was 378 m3. The T2 treatment achieved a good water-saving goal. (3) The T2 treatment significantly promoted tree height, basal diameter, and crown; (4) As for the wind control benefit, the T4 treatment was worst, the T2 treatment was the best, with no significant difference between T1 and T3 treatments.

Key words: Elaeagnus angustifolia, irrigation frequency, survival rate, growth, wind control benefit, the lower reaches of Tarim River

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