| 引用本文: | 吕英泽,赵宏亮,颜培轩,等.人工集雨条件下贺兰山蒙古扁桃
土壤水分和生长的动态变化[J].灌溉排水学报,2023,42(S1):47-52. |
| LYU Yingze,ZHAO Hongliang,YAN Peixuan,et al.人工集雨条件下贺兰山蒙古扁桃
土壤水分和生长的动态变化[J].灌溉排水学报,2023,42(S1):47-52. |
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| 摘要: |
| 【目的】提高贺兰山低山区有限降水利用效率。【方法】以贺兰山低山区蒙古扁桃种群为研究对象，设置覆膜微地形（A2）、覆盖枯落物（A3）以及覆膜微地形＋覆盖枯落物（A4）3种人工集雨处理，以无人工处理为对照（A1），研究不同人工集雨方式处理下贺兰山低山区蒙古扁桃根区土壤水分以及蒙古扁桃生长的动态变化。【结果】①不同集雨技术下蒙古扁桃土壤水分最高的是覆膜微地形+覆盖枯落物处理（A4），其次是覆膜微地形处理（A2），A4、A2处理平均土壤含水率分别为11.91%和10.64%，较A1处理平均土壤含水率分别增加3.77%和2.5%；②集雨处理能够提高蒙古扁桃新梢生长量，A4处理的新梢生长量最大，A2处理次之，A3处理第三，且较A1处理的新梢生长量均有较大提高；集雨处理对蒙古扁桃叶片叶绿素量的提升表现为A4处理>A2处理>A3处理，且均高于A1处理；③集雨处理，主要是A4处理和A2处理下植物叶面积、新梢生长量与土壤含水率显著相关；④集雨技术通过调节土壤水分状况来促进蒙古扁桃灌丛的生长发育，提高叶片中叶绿素量，从而提高蒙古扁桃抵御干旱的能力。【结论】“覆膜微地形＋覆盖枯落物”和“覆膜微地形”的集雨技术有助于贺兰山低山区蒙古扁桃灌丛植被恢复；人工集雨处理能够改善土壤环境同时促进蒙古扁桃灌丛生长，有利于贺兰山低山区生态系统的重建和植被恢复的可持续发展。 |
| 关键词: 贺兰山低山区；蒙古扁桃；集雨；土壤水分 |
| DOI：10.13522/j.cnki.ggps.2022675 |
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| Soil Moisture and Growth Dynamics of Prunus Mongolica in the Helan Mountain under Artificial Rain-collecting |
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LYU Yingze, ZHAO Hongliang, YAN Peixuan, ZHANG Haiying,
LI Jia, LI Jingyao, SHAO Leilei, WANG Fang, NI Xilu
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1. School of Agriculture, Ningxia University, Yinchuan 750021, China; 2. Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, School of Ecology and Environment, Ningxia University,
Yinchuan 750021, China; 3. Ningxia Helan Mountain Forest Ecosystem Research Station, State Forestry Administration,
Yinchuan 750021, China; 4. School of Geographical Science and Planning, Ningxia University, Yinchuan 750021, China
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| Abstract: |
| 【Objective】To improve the utilization efficiency of limited precipitation in the low elevation area of Helan Mountain. 【Method】Taking the population of prunus mongolica in low elevation area of Helan Mountain as the research object, we set up three artificial rain-collecting treatments, namely, film mulching-microtopography (A2), litter mulching (A3), and film mulching-microtopography+mulching litter(A4), and none artificial treatment as the control (A1), and investigated the dynamics of the soil moisture in the rooting area of prunus mongolica and the growth of prunus mongolica in the low mountainous area of Helan Mountain with different artificial rain-collecting treatments. 【Result】① The highest soil moisture in Mongolian lentil under different rain-collecting treatments was A4 treatment, followed by A2 treatment, with an average soil moisture of 11.91% and 10.64%, respectively, which was an increase of 3.77% and 2.5%, respectively, compared to the average soil moisture of the A1 treatment; ② Rain-collecting treatment could improve the growth of shoots of prunus mongolica, and the growth of shoots in A4 treatment was the largest, and followed by A2, A3 treatment, and the growth of new shoots of prunus mongolica was greatly improved compared with that of A1 treatment; the enhancement of chlorophyll amount of prunus mongolica leaves by rain-collecting treatment was shown in the following way: A4 treatment > A2 treatment > A3 treatment, and all of them were higher than that of A1 treatment; ③ Plant leaf area and new growth were significantly corrected with soil moisture under rain-collecting treatments, mainly the A4 and A2 treatment; ④Rain-collecting technology promotes the growth and development of prunus mongolica thickets by regulating soil moisture and increasing the amount of chlorophyll in the leaves, thereby increasing the ability of prunus mongolica to withstand drought. 【Conclusion】The rain-collecting treatment of A4 and A2 can help to restore the vegetation of prunus mongolica in low elevation area of Helan Mountain; artificial rain-collecting treatments can improve the soil environment and promote the growth of prunus mongolica at the same time, which is conducive to the reconstruction of the ecosystems of low elevation area of Helan Mountain and the sustainable development of the recovery of the vegetation. |
| Key words: low elevation area of Helan mountain; prunus mongolica; rain-collecting; water content |
