Effects of Salt-isolation Materials on Soil Water and Salt Movement and Tree Growth of Saline Soil in a Coastal Region

WANG Linlin; LI Suyan; SUN Xiangyang; ZHANG Tao; FU Ying

doi:10.13961/j.cnki.stbctb.2015.04.028

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Effects of Salt-isolation Materials on Soil Water and Salt Movement and Tree Growth of Saline Soil in a Coastal Region

- Effects of Salt-isolation Materials on Soil Water and Salt Movement and Tree Growth of Saline Soil in a Coastal Region
- Bulletin of Soiland Water Conservation Vol. 35, Issue 4, Pages: 141-147(2015)
- 作者机构：
  
  1. 北京林业大学林学院,北京,100083
  2. 北京农学院研究生处,北京,102206
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.04.028
  CLC：
- Published：2015
- 稿件说明：
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WANG Linlin, LI Suyan, SUN Xiangyang, et al. Effects of Salt-isolation Materials on Soil Water and Salt Movement and Tree Growth of Saline Soil in a Coastal Region[J]. Bulletin of Soiland Water Conservation, 2015, 35(4): 141-147.
DOI：

WANG Linlin, LI Suyan, SUN Xiangyang, et al. Effects of Salt-isolation Materials on Soil Water and Salt Movement and Tree Growth of Saline Soil in a Coastal Region[J]. Bulletin of Soiland Water Conservation, 2015, 35(4): 141-147. DOI： 10.13961/j.cnki.stbctb.2015.04.028.

摘要

[目的

]

揭示不同隔盐材料对滨海盐渍土水盐动态和树木生长的影响

为滨海地区盐渍土改良和沿海防护林营造等林业工程提供理论依据。[方法

]

采用单因素方差分析及多重比较方法

于2010-2013年在天津滨海重度盐碱地区的大田试验中

开展了沸石、陶粒、蛭石和河沙4种隔盐材料对盐渍土0-80 cm土层水盐动态及4个树种(刺槐、国槐、香花槐和红叶臭椿)生长影响的研究。[结果

]

(1) 在树穴底部和侧壁铺设隔盐层可以明显降低土壤含盐量并显著增加土壤含水量。沸石处理(FS)能显著降低0-80 cm土体内盐分含量

控抑盐效果明显优于其他处理。陶粒处理(TL)在40-80 cm土层有显著的降盐效果

但其控盐效果比沸石差。蛭石处理(ZS)仅在40-60 cm土体内显著降低土壤含盐量。河沙处理(HS)中

0-80 cm土体内盐分含量虽低于对照

但与对照之间无显著差异

降盐效果最差; (2) 铺设隔盐层可显著降低土壤盐分离子含量

其中对Na

和SO

这3种滨海盐碱地主要盐分离子的去除效果排序为:FS > TL > ZS > HS; (3) 隔盐层材料能有效改善树种根区土壤物理性质

提高各树种成活率和保存率

并能明显促进植物生长

其中沸石效果最佳。[结论

]

可将沸石作为滨海地区4个树种造林时隔盐材料的最优选择。

Abstract

[Objective] Assessing the effects of salt-isolation materials on soil water and salt movements in saline soil and on the growth of forestation four species(Robinia pseudoacacia

Sophora japonica

Robinia pseudoacacia cv. Idaho

Ailanthus altissima) in the coastal regions of Tianjin City. [Methods] We used four salt-isolation materials to restrict the water and salt movements in the saline soil: zeolite(FS)

ceramsite(TL)

vermiculite(ZS) and river sand(HS). The research was conducted from 2010 to 2013 at the Coastal Salt-tolerant Plant Science and Technology Park

Dagang

Tianjin City. One-way ANOVA and multiple comparison were used in the data analysis. [Results] (1) Salt-isolation interlayers could significantly reduce soil salt content and increase soil water content of tree planting site. FS treatment performed better than other treatments in reducing salt content and had the lowest salt content. The significant effect of TL treatment on salt content was only observed in the 40-80 cm soil layer

and it performed worse than FS. Relative to the control

ZS had no significant effects on salt content in the 0-40 cm and 60-80 cm layers. HS treatment also had no significant effects on salt content for the investigated soil profile. (2) Salt-isolation materials could significantly reduce soil salt content. FS performed best in reducing the major three salt ions of Na+

Cl- and SO42-

followed by TL

ZS and HS. (3) Salt-isolation materials could also effectively improve soil physical structure of the planting sites

increase tree planting survival rate and preserving rate

and enhance tree growth. On these points

FS was the best performer among the four salt-isolation materials. [Conclusion] Selecting FS as the salt-isolation materials is the best option in controlling soil water and salt movement and improving tree growth in coastal regions.

关键词

Keywords

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