{"title":"堆肥中的可溶性盐及其对土壤和植物的影响","authors":"M. Gondek, D. Weindorf, C. Thiel, G. Kleinheinz","doi":"10.1080/1065657x.2020.1772906","DOIUrl":null,"url":null,"abstract":"Abstract The chemical, physical, and biological conditions of soil and growing media can be substantively improved by the addition of compost. Compost contains many plant essential nutrients (e.g. N, P, and K) and can also be a source of organic matter. However, concerns persist over composts with a high concentration of soluble salts and their effects on soil fertility, plant growth, and yields. Soluble salts refer to soluble ions such as Ca2+, K+, Mg2+, and Na+ in compost and are measured indirectly and cumulatively through electrical conductivity (EC). Specifically, compost salinity is commonly measured using a method referred to as EC5 whereas soils are measured using an ECe. The use of a variety of non-standardized methodologies often make interpreting results between studies difficult. A compost with an EC5 >5 dS m−1 could be the result of high concentrations of Na+ or other ions, which can be detrimental to plants due to their ability to accumulate in plant tissue and interfere with root uptake of water. Thus, reducing soluble salts, specifically Na+ and Cl− in composts is of high importance. Other soluble salts present in compost (e.g. K+ and Ca2+) are mineral nutrients required for plant growth and can aid in reducing soil sodicity. In appropriate proportions, quality compost with a high EC5 mixed with soil or media can enhance plant growth and yields. Composts with a high EC5 are adept at aiding in soil remediation by facilitating soil particle flocculation, helping leach Na+ deeper into the soil profile and raising soil cation exchange capacity in support of increased soil fertility. Labeling composts and developing appropriate application methods could allay concerns associated with composts where EC5 > 5 dS m−1and promote compost use and sustainable farming practices.","PeriodicalId":10714,"journal":{"name":"Compost Science & Utilization","volume":null,"pages":null},"PeriodicalIF":2.0000,"publicationDate":"2020-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/1065657x.2020.1772906","citationCount":"63","resultStr":"{\"title\":\"Soluble Salts in Compost and Their Effects on Soil and Plants: A Review\",\"authors\":\"M. Gondek, D. Weindorf, C. Thiel, G. Kleinheinz\",\"doi\":\"10.1080/1065657x.2020.1772906\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract The chemical, physical, and biological conditions of soil and growing media can be substantively improved by the addition of compost. Compost contains many plant essential nutrients (e.g. N, P, and K) and can also be a source of organic matter. However, concerns persist over composts with a high concentration of soluble salts and their effects on soil fertility, plant growth, and yields. Soluble salts refer to soluble ions such as Ca2+, K+, Mg2+, and Na+ in compost and are measured indirectly and cumulatively through electrical conductivity (EC). Specifically, compost salinity is commonly measured using a method referred to as EC5 whereas soils are measured using an ECe. The use of a variety of non-standardized methodologies often make interpreting results between studies difficult. A compost with an EC5 >5 dS m−1 could be the result of high concentrations of Na+ or other ions, which can be detrimental to plants due to their ability to accumulate in plant tissue and interfere with root uptake of water. Thus, reducing soluble salts, specifically Na+ and Cl− in composts is of high importance. Other soluble salts present in compost (e.g. K+ and Ca2+) are mineral nutrients required for plant growth and can aid in reducing soil sodicity. In appropriate proportions, quality compost with a high EC5 mixed with soil or media can enhance plant growth and yields. Composts with a high EC5 are adept at aiding in soil remediation by facilitating soil particle flocculation, helping leach Na+ deeper into the soil profile and raising soil cation exchange capacity in support of increased soil fertility. Labeling composts and developing appropriate application methods could allay concerns associated with composts where EC5 > 5 dS m−1and promote compost use and sustainable farming practices.\",\"PeriodicalId\":10714,\"journal\":{\"name\":\"Compost Science & Utilization\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2020-04-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1080/1065657x.2020.1772906\",\"citationCount\":\"63\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Compost Science & Utilization\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.1080/1065657x.2020.1772906\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Compost Science & Utilization","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1080/1065657x.2020.1772906","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ECOLOGY","Score":null,"Total":0}
Soluble Salts in Compost and Their Effects on Soil and Plants: A Review
Abstract The chemical, physical, and biological conditions of soil and growing media can be substantively improved by the addition of compost. Compost contains many plant essential nutrients (e.g. N, P, and K) and can also be a source of organic matter. However, concerns persist over composts with a high concentration of soluble salts and their effects on soil fertility, plant growth, and yields. Soluble salts refer to soluble ions such as Ca2+, K+, Mg2+, and Na+ in compost and are measured indirectly and cumulatively through electrical conductivity (EC). Specifically, compost salinity is commonly measured using a method referred to as EC5 whereas soils are measured using an ECe. The use of a variety of non-standardized methodologies often make interpreting results between studies difficult. A compost with an EC5 >5 dS m−1 could be the result of high concentrations of Na+ or other ions, which can be detrimental to plants due to their ability to accumulate in plant tissue and interfere with root uptake of water. Thus, reducing soluble salts, specifically Na+ and Cl− in composts is of high importance. Other soluble salts present in compost (e.g. K+ and Ca2+) are mineral nutrients required for plant growth and can aid in reducing soil sodicity. In appropriate proportions, quality compost with a high EC5 mixed with soil or media can enhance plant growth and yields. Composts with a high EC5 are adept at aiding in soil remediation by facilitating soil particle flocculation, helping leach Na+ deeper into the soil profile and raising soil cation exchange capacity in support of increased soil fertility. Labeling composts and developing appropriate application methods could allay concerns associated with composts where EC5 > 5 dS m−1and promote compost use and sustainable farming practices.
期刊介绍:
4 issues per year
Compost Science & Utilization is currently abstracted/indexed in: CABI Agriculture & Environment Abstracts, CSA Biotechnology and Environmental Engineering Abstracts, EBSCOhost Abstracts, Elsevier Compendex and GEOBASE Abstracts, PubMed, ProQuest Science Abstracts, and Thomson Reuters Biological Abstracts and Science Citation Index