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土壤特性对渠道护坡植草生长状况的影响
马志林1,2, 张丽娅3, 杨秋贵1,2, 李虎星1,2, 陈芳4
1.河南省水利科学研究院, 河南 郑州 450003;2.河南省水利工程安全技术重点实验室, 河南 郑州 450003;3.华北水利水电大学, 河南 郑州 450002;4.河南科光工程建设监理有限公司, 河南 郑州 450003
摘要:
[目的] 研究土壤理化性质的变化对渠坡植草生长的影响,为南水北调中线工程植草护坡及标准化管理提供科学依据。[方法] 以南水北调中线河南省新郑段渠坡为例,分析4个不同盖度典型植草护坡样方不同层次土壤理化性质及变化特征。[结果] ①秋季土壤水分比较适宜,浅层水分含量平均为16.56%,深层水分含量平均为16.91%,同一样方垂直剖面差异不大,不同样方浅层差异较明显。②土壤pH值平均在8.5左右,整体呈强碱性;平均容重在1.37左右,浅层小于深层。③有机质含量浅层平均为0.34%,深层平均为0.31%,不同盖度样方差异明显(p<0.05);全氮、全磷含量缺乏,全钾含量相对较高。[结论] 不同植草护坡盖度和生长状况渠坡土壤特征具有明显差异,但均属较差水平。渠坡植草生长状况除土壤自身特性外,还与草坪建植措施、长期极端干旱及不合理修剪等日常管护措施有较大关系。
关键词:  渠坡植草  生长状况  土壤特性  南水北调中线工程
DOI:10.13961/j.cnki.stbctb.2019.05.015
分类号:S158.3
基金项目:河南省科技攻关计划项目“水利工程渠道边坡植被退化与修复示范研究”(172102110116)
Effects of Soil Characteristics on Grass Growth of Channel Slope Protection
Ma Zhilin1,2, Zhang Liya3, Yang Qiugui1,2, Li Huxing1,2, Chen Fang4
1.He'nan Water Conservancy Science Academy, Zhengzhou, He'nan 450003, China;2.He'nan Key Laboratory of Hydraulic Engineering Security Technology, Zhengzhou, He'nan 450003, China;3.North China University of Water Resources and Electric Power, Zhengzhou, He'nan 450002, China;4.He'nan Keguang Engineering Construction Supervision Co. Ltd, Zhengzhou, He'nan 450003, China
Abstract:
[Objective] The effects of various soil physical and chemical properties on plant growth on canal slopes were studied in order to provide a scientific basis for grassland slope protection and standardized management of the central route of the south-to-north water transfer project.[Methods] The physical and chemical properties and change characteristics at different levels of the typical grass slopes of four different coverages were analyzed by taking the slope of the Xinzheng section of the central route of the south-to-north water transfer project as an example.[Results] ① The soil moisture in autumn was more suitable, with an average moisture content of 16.56% in the shallow layer and 16.91% in the deep layer; the vertical profile difference within the same sample plot was not significant, and the shallow layer difference of the different quadrat was obvious. ② The soil pH value was about 8.5 on average, and the soil was strongly alkaline. The average soil bulk density was about 1.37, and the soil bulk density in the shallow layers was lower than that in the deeper layers. ③ The average content of organic matter was 0.34%, and the average depth was 0.31%, which differed significantly (p<0.05) depending on coverage in the quadrat. The soil was found to be deficient in total nitrogen and phosphorus, and the total potassium content was relatively high.[Conclusion] There were obvious differences in soil characteristics, between different vegetation and degrees of grass slope protection, but all soil types were found to be of poor quality. Besides soil characteristics, the factors that affect the plant growth on canal slopes was also related to daily management and protection measures, such as lawn planting measures, the effects of long periods of extreme drought, and improper pruning.
Key words:  channel slope planting grass protection  vegetation growth status  soil characteristics  the south-to-north water transfer project