Groasis Waterboxx造林技术在沙丘的造林效果
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2013年国家林业局引进国际先进林业科学技术项目“荷兰Groasis保水节水造林技术引进”(2013-4-67)


Afforestation Effects of Groasis Waterboxx on Sand Dunes
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    [目的] 为解决干旱荒漠区沙丘造林成活率低的技术难题,从荷兰Groasis引进Waterboxx保水、节水造林器及技术,并分析其应用效果。[方法] 在甘肃省民勤县流动沙丘和半固定沙丘上,用梭梭、花棒、柠条锦鸡儿、柽柳等固沙植物进行造林试验,采用直观统计观测的方法,研究Groasis Waterboxx在沙丘上造林后的风蚀、温度、保水和苗木成活率情况。[结果](1)春季用Groasis Waterboxx沙丘造林技术,流动沙丘风蚀情况比半固定沙丘严重2.0~6.0倍,造林效果差;从沙丘迎风面不同部位的风蚀情况来看,流动沙丘和半固定沙丘总体均表现为:顶部 > 中部 > 底部;(2)Groasis Waterboxx沙丘造林技术在高温季节能有效降低苗木根际土壤地温近50%,保护苗木免受高温灼伤,促进苗木生长;低温季节还能有效保持根际表面地温在5 ℃左右,防止苗木遭受低温冻害;(3)Groasis Waterboxx沙丘造林技术能使苗木周边0-40 cm表土层含水量长期保持在6%~12%,保证苗木成活期的水分持续供给;(4)Groasis Waterboxx沙丘造林技术能显著提高苗木成活率30%~60%。[结论] Groasis Waterboxx沙丘造林技术在半固定沙丘造林效果优于流动沙丘,能够显著提高苗木成活率。

    Abstract:

    [Objective] Groasis Waterboxx and technology from Holland were introduced to solve the problem of sand dunes afforestation, and the technology application were analyzed. [Methods] Desert plants such as Haloxylon ammodendron, Hedysarum scoparium, Caragana korshinskii, Tamarix chinensis and other sand-fixing plants were used in Groasis Waterboxx afforestation on the mobile and semi-fixed dunes. Wind erosion was observed after the waterboxx plantation, and the ground temperature, seedling survival rate, dry weight, soil water-moisture content were measured. [Results] In the case of spring afforestation on dunes with Groasis Waterboxx, the wind erosion degree of mobile dunes was 2.0~6.0 times of the one of semi-fixed dune. Afforestation on mobile dunes was not as good as the one on semi-fixed dunes. Either for the mobile dunes or the semi-fixed dunes, the wind erosion degree on windward sides exhibited a normal rank at dune positions as: the top > the middle > bottom. (2) In terms of temperature effect, we observed that, in high temperature season, Groasis Waterboxx effectively reduced nearly 50% of soil temperature in the seedlings rhizosphere comparing with the one on bare ground. It can protect seedlings from high temperature burn; whereas in low temperature season, it maintained the rhizosphere surface ground temperature at about 5 ℃, can prevent seedling from low temperature freezing injury. (3) Using Groasis Waterboxx afforestation on sand dunes, moisture content of 0-40 cm topsoil was maintained to be a relative stable level of 6%~12%, ensuring the seedlings a constant supply of soil water. (4) In the end, afforestation using Groasis Waterboxx on dunes significantly improved the seedlings survival rate by 30%~60%, which may provide new idea and pattern to those difficult site conditions for afforestation. [Conclusion] Groasis Waterboxx afforestation is more applicable on semi-fixed dunes than on moving dunes. It can significantly increase the survival rate of seedlings.

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严子柱,满多清,姚泽,唐卫东,张芝萍,李菁菁. Groasis Waterboxx造林技术在沙丘的造林效果[J].水土保持通报,2017,37(2):222-227

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  • 收稿日期:2016-06-28
  • 最后修改日期:2016-09-06
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  • 在线发布日期: 2017-05-10
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