不同盐胁迫水平下生物炭用量对金盏花作物土壤养分有效性、土壤酶活性和植物生长的影响

IF 1.8 4区农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY

Crop & Pasture Science Pub Date : 2022-07-30 DOI:10.1071/CP21542

R. Premalatha, P. Malarvizhi, E. Parameswari

{"title":"不同盐胁迫水平下生物炭用量对金盏花作物土壤养分有效性、土壤酶活性和植物生长的影响","authors":"R. Premalatha, P. Malarvizhi, E. Parameswari","doi":"10.1071/CP21542","DOIUrl":null,"url":null,"abstract":"ABSTRACT Context. Biochar application not only remediates soils contaminated by heavy metals but also improves soil fertility and plant growth in salt-affected soils. Aims. The aim of the study was to investigate the effects of water source salinity and biochar on soil properties and growth of a marigold (Tagetes erecta) crop. Methods. This pot study used a factorial completely randomised design with four levels of salinity of the water source (0.04, 2.01, 3.32 and 5.16 dS m−1) and five biochar doses (0, 2.5, 5.0, 7.5 and 10 t ha−1). Salinity treatments contained different proportions of treated tannery effluent, and biochar was derived from water hyacinth (Eichhornia crassipes). Soil physico-chemical properties, nutrient contents and enzyme activities, and plant biomass, were measured during crop growth and post-harvest. Key results. Water salinity level and biochar dose both had significant effects on soil properties. Higher salinity of water and biochar dose increased soil pH, whereas electrical conductivity decreased with biochar application in soils receiving higher salinity water. Soil organic carbon and available nutrients were significantly affected by salinity level and biochar dose. Irrespective of salinity level, biochar application at 10 t ha−1 increased soil organic carbon and available nitrogen, phosphorus and potassium by 40.5%, 23.1%, 15.2% and 30.5% in post-harvest soils. Enzyme activities and plant growth were significantly reduced at higher salt levels, whereas application of biochar improved these parameters. Conclusions. The results indicate that application of biochar at 10 t ha−1 significantly promotes nutrient availability and enzyme activities in soils with various levels of salinity. Biochar application enables plant growth primarily by trapping the soluble salts on the pore space available in its surface. Implications. Biochar application may help to mitigate nutrient deficiency and crop failure under salt-stress conditions.","PeriodicalId":51237,"journal":{"name":"Crop & Pasture Science","volume":null,"pages":null},"PeriodicalIF":1.8000,"publicationDate":"2022-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":"{\"title\":\"Effect of biochar doses under various levels of salt stress on soil nutrient availability, soil enzyme activities and plant growth in a marigold crop\",\"authors\":\"R. Premalatha, P. Malarvizhi, E. Parameswari\",\"doi\":\"10.1071/CP21542\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"ABSTRACT Context. Biochar application not only remediates soils contaminated by heavy metals but also improves soil fertility and plant growth in salt-affected soils. Aims. The aim of the study was to investigate the effects of water source salinity and biochar on soil properties and growth of a marigold (Tagetes erecta) crop. Methods. This pot study used a factorial completely randomised design with four levels of salinity of the water source (0.04, 2.01, 3.32 and 5.16 dS m−1) and five biochar doses (0, 2.5, 5.0, 7.5 and 10 t ha−1). Salinity treatments contained different proportions of treated tannery effluent, and biochar was derived from water hyacinth (Eichhornia crassipes). Soil physico-chemical properties, nutrient contents and enzyme activities, and plant biomass, were measured during crop growth and post-harvest. Key results. Water salinity level and biochar dose both had significant effects on soil properties. Higher salinity of water and biochar dose increased soil pH, whereas electrical conductivity decreased with biochar application in soils receiving higher salinity water. Soil organic carbon and available nutrients were significantly affected by salinity level and biochar dose. Irrespective of salinity level, biochar application at 10 t ha−1 increased soil organic carbon and available nitrogen, phosphorus and potassium by 40.5%, 23.1%, 15.2% and 30.5% in post-harvest soils. Enzyme activities and plant growth were significantly reduced at higher salt levels, whereas application of biochar improved these parameters. Conclusions. The results indicate that application of biochar at 10 t ha−1 significantly promotes nutrient availability and enzyme activities in soils with various levels of salinity. Biochar application enables plant growth primarily by trapping the soluble salts on the pore space available in its surface. Implications. Biochar application may help to mitigate nutrient deficiency and crop failure under salt-stress conditions.\",\"PeriodicalId\":51237,\"journal\":{\"name\":\"Crop & Pasture Science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2022-07-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"6\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Crop & Pasture Science\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.1071/CP21542\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"AGRICULTURE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crop & Pasture Science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1071/CP21542","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRICULTURE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 6

摘要

摘要上下文。施用生物炭不仅可以修复受重金属污染的土壤，还可以改善受盐影响土壤的土壤肥力和植物生长。目标。本研究的目的是研究水源盐度和生物炭对万寿菊作物土壤性质和生长的影响。方法。这项盆栽研究使用了一项因子完全随机设计，包括四个水源盐度水平（0.04、2.01、3.32和5.16 dS m−1）和五个生物炭剂量（0、2.5、5.0、7.5和10 t ha−1）。盐度处理含有不同比例的制革废水，生物炭来源于凤眼莲。在作物生长和收获后测量了土壤的物理化学性质、养分含量和酶活性以及植物生物量。关键成果。盐度和生物炭用量对土壤性质均有显著影响。较高盐度的水和生物炭剂量增加了土壤pH，而在接受较高盐度水的土壤中，随着生物炭的施用，电导率降低。盐度和生物炭用量对土壤有机碳和有效养分有显著影响。无论盐度水平如何，在收获后土壤中，施用10 t ha−1生物炭可使土壤有机碳和有效氮、磷和钾分别增加40.5%、23.1%、15.2%和30.5%。在高盐水平下，酶活性和植物生长显著降低，而施用生物炭改善了这些参数。结论。结果表明，在不同盐度水平的土壤中，施用10 t ha−1的生物炭显著提高了养分的有效性和酶活性。生物炭的应用主要通过将可溶性盐捕获在其表面可用的孔隙空间上来实现植物生长。含义。施用生物炭可能有助于缓解盐胁迫条件下的营养缺乏和作物歉收。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Effect of biochar doses under various levels of salt stress on soil nutrient availability, soil enzyme activities and plant growth in a marigold crop

ABSTRACT Context. Biochar application not only remediates soils contaminated by heavy metals but also improves soil fertility and plant growth in salt-affected soils. Aims. The aim of the study was to investigate the effects of water source salinity and biochar on soil properties and growth of a marigold (Tagetes erecta) crop. Methods. This pot study used a factorial completely randomised design with four levels of salinity of the water source (0.04, 2.01, 3.32 and 5.16 dS m−1) and five biochar doses (0, 2.5, 5.0, 7.5 and 10 t ha−1). Salinity treatments contained different proportions of treated tannery effluent, and biochar was derived from water hyacinth (Eichhornia crassipes). Soil physico-chemical properties, nutrient contents and enzyme activities, and plant biomass, were measured during crop growth and post-harvest. Key results. Water salinity level and biochar dose both had significant effects on soil properties. Higher salinity of water and biochar dose increased soil pH, whereas electrical conductivity decreased with biochar application in soils receiving higher salinity water. Soil organic carbon and available nutrients were significantly affected by salinity level and biochar dose. Irrespective of salinity level, biochar application at 10 t ha−1 increased soil organic carbon and available nitrogen, phosphorus and potassium by 40.5%, 23.1%, 15.2% and 30.5% in post-harvest soils. Enzyme activities and plant growth were significantly reduced at higher salt levels, whereas application of biochar improved these parameters. Conclusions. The results indicate that application of biochar at 10 t ha−1 significantly promotes nutrient availability and enzyme activities in soils with various levels of salinity. Biochar application enables plant growth primarily by trapping the soluble salts on the pore space available in its surface. Implications. Biochar application may help to mitigate nutrient deficiency and crop failure under salt-stress conditions.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Crop & Pasture Science AGRICULTURE, MULTIDISCIPLINARY-

CiteScore

4.20

自引率

15.80%

发文量

111

审稿时长

3 months

期刊介绍： Crop and Pasture Science (formerly known as Australian Journal of Agricultural Research) is an international journal publishing outcomes of strategic research in crop and pasture sciences and the sustainability of farming systems. The primary focus is broad-scale cereals, grain legumes, oilseeds and pastures. Articles are encouraged that advance understanding in plant-based agricultural systems through the use of well-defined and original aims designed to test a hypothesis, innovative and rigorous experimental design, and strong interpretation. The journal embraces experimental approaches from molecular level to whole systems, and the research must present novel findings and progress the science of agriculture. Crop and Pasture Science is read by agricultural scientists and plant biologists, industry, administrators, policy-makers, and others with an interest in the challenges and opportunities facing world agricultural production. Crop and Pasture Science is published with the endorsement of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian Academy of Science.