Effects of Modified Cellulose Polymer Sand-Fixing Material on Emergence Rate and Seedling Growth of Herbaceous Plants

Yuan Jinke; Chen Jie

doi:10.13961/j.cnki.stbctb.2020.03.039

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Effects of Modified Cellulose Polymer Sand-Fixing Material on Emergence Rate and Seedling Growth of Herbaceous Plants

- Effects of Modified Cellulose Polymer Sand-Fixing Material on Emergence Rate and Seedling Growth of Herbaceous Plants
- Bulletin of Soiland Water Conservation Vol. 40, Issue 3, Pages: 268-273(2020)
- 作者机构：
  
  成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川,成都,610059
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2020.03.039
  CLC： Q945.3;S157
- Published：2020
- 稿件说明：
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Yuan Jinke, Chen Jie. Effects of Modified Cellulose Polymer Sand-Fixing Material on Emergence Rate and Seedling Growth of Herbaceous Plants[J]. Bulletin of Soiland Water Conservation, 2020, 40(3): 268-273.
DOI：

Yuan Jinke, Chen Jie. Effects of Modified Cellulose Polymer Sand-Fixing Material on Emergence Rate and Seedling Growth of Herbaceous Plants[J]. Bulletin of Soiland Water Conservation, 2020, 40(3): 268-273. DOI： 10.13961/j.cnki.stbctb.2020.03.039.

摘要

[目的] 研究新型固沙材料与5种典型草本植物的相容性影响，为九寨沟景区震后生态恢复重建提供理论依据。[方法] 基于改性纤维素类新型固沙材料和典型草本植物，利用基质吸力分析、植被模拟分析和相关统计等方法，探讨不同配比方式的固沙材料与草本植物的相容性机理。[结果] 固沙材料基质吸力最终稳定在80 kPa左右，可以给植物根系生长提供稳定的供水环境；灯笼草和唐松草在两种配比的固沙材料中均有出苗，说明这两种植物与固沙材料相容性良好，从出苗率分布看，唐松草 > 灯笼草 > 金线草、茜草、夏枯草，其中唐松草出苗率达到30%；1：3液固质量比的固沙材料含水率更高，植物株苗存活时间更长；种子出苗区域均位于固沙材料孔隙较大的位置。[结论] 新型固沙材料基质吸力最终在80 kPa以内，1：2配比固沙材料的唐松草出苗率为30%，灯笼草平均根径达到2 mm，同时具有一定孔隙的固沙材料更适宜植物幼苗生长。

Abstract

[Objective] The compatibility impacts of new sand-fixing materials on five typical herbaceous plants were studied to provide a theoretical basis for the ecological restoration and reconstruction of the Jiuzhaigou scenic area after an earthquake.[Methods] Based on the new sand-fixing materials of modified cellulose and typical herbaceous plants

matric suction analysis

vegetation simulation analysis

and relevant statistics were used to study the compatibility mechanism between sand-fixing materials of different proportions and herbaceous plants.[Results] The matrix suction of the sand-fixing material was stabilized at approximately 80 kPa

which could provide a stable water supply environment for plant root growth. Physalis alkekengi and Thalictrum aquilegifolium had germinated in two kinds of sand-fixing material

indicating that these two plants had good compatibility with the sand-fixing materials. From the distribution of the germination rate

T. aquilegifolium > P. alkekengi > Rubia membranacea

Rubia cordifolia

Prunella vulgaris

the germination rate of T. aquilegifolium reached 30%. A 1:3 liquid-solid mass ratio of sand-fixing material had a higher water content

and plant seedlings survived longer. The germination area of the seeds was at a position where the pores of the sand-fixing material were large.[Conclusion] The final matric suction of new sand-fixing material was within 80 kPa

the emergence rate of T. aquilegifolium with a 1:2 ratio of sand-fixing material was 30%

the average root diameter of P. alkekengi was 2 mm

and the sand-fixing materials with a certain porosity were more suitable for the growth of plant seedlings.

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