ZHANG Yong,LI Shaocai,SUN Hailong.Effects of Root Stretch Space on Nutrient Content of Plant Roll[J].Northern Horticulture,2017,41(20):115-121.[doi:10.11937/bfyy.20170761]
伸根空间对植物卷材养分含量的影响
- Title:
- Effects of Root Stretch Space on Nutrient Content of Plant Roll
- Keywords:
- roots stretch space; nutrient elements; plant roll
- 文献标志码:
- A
- 摘要:
- 伸根空间是植被生态系统植物所需养分的直接提供者。以经植被恢复3年后的坡面等的植物卷材伸根空间基质为对象,分析伸根空间对基质养分含量的影响。结果表明:养分含量均值全氮(N)12.350 g?kg-1,全磷(P)5.519 g?kg-1,全钾(K)6.329 g?kg-1,全钙(Ca)16.195 g?kg-1,全镁(Mg)7.192 g?kg-1,全铁(Fe)18.245 g?kg-1,全锰(Mn)0.250 g?kg-1,有效铜(Cu)1.927 mg?kg-1,有效锌(Zn)6.675 mg?kg-1;显著性分析表明,伸根空间对养分元素含量均具有显著性影响,有正显著影响也有负显著影响;以水泥盒(D)为对照,部分养分元素损耗速率加快,如全N、全Mn、有效Cu等,也能降低部分元素的损失速率,如全K、全Ca、全Mg、全Fe、有效Zn等。此外,对于全P,1∶0.5坡面(P2)、沙场(S)能加速P元素的损失,而其余伸根空间能够降低损失速率。根据全国第2次土壤普查养分分级标准,所有伸根空间基质K元素均表现为缺-极缺,且有效Cu在屋面(W)和渣场(Z)表现为中等,其余测定的养分元素含量均表现为稍丰/丰,证明植物卷材对于伸根空间养分保持具有积极意义。
- Abstract:
- The roots stretch spaces are the direct provider of nutrients needed for vegetation ecosystem plants.The effects of the root stretch space on the nutrient content of the substrate were analyzed.The results showed that the nutrient elements content was total nitrogen 12.350 g ? kg-1,total phosphorus 5.519 g ? kg-1,total potassium 6.329 g ? kg-1,total calcium 16.195 g ? kg-1,total magnesium 7.192 g ? kg-1,total iron 18.245 g ? kg-1,total manganese 0.250 g ? kg-1,available cuprum 1.927 mg ? kg-1,available zinc 6.675 mg ? kg-1.The significance analysis showed that there was a significant effect which the root stretch space with the nutrient content.With the cement box (D) as the control,the loss rate of some nutrient elements was accelerated,such as total nitrogen,total manganese,available cuprum,etc.,could also reduce the loss rate of some elements such as total potassium,total calcium,total magnesium,total iron,available zinc and so on.In addition,for total phosphorus,1∶0.5 slope (P2),the sand pile (S) could accelerate the loss,while the rest of the root stretch spaces could reduce the loss rate.According to the 2nd national soil survey and the criteria for grading of soil nutrient status,the potassium elements in all the root stretch spaces were shown to be deficient and extremely deficient,and the available cuprum was medium in the roof (W) and gravel field (Z),and the remaining nutrient content were shown to be slightly abundant and abundant,which showed that the plant roll had a positive significance for the nutrient retention of the root stretch spaces.
参考文献/References:
[1]郝云庆,何丙辉,李旭光.巫溪县红池坝不同植被恢复阶段土壤养分评价[J].西南农业大学学报(自然科学版),2006(1):149-153.
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备注/Memo
第一作者简介:张湧(1992-),男,硕士研究生,研究方向为植被恢复及边坡绿化与生态工程。E-mail:zhangyongstu@163.com.