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土壤石油污染对9个玉米(Zea mays L.)品种种子萌发及幼苗生长的影响
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引用本文:罗 巧,段 磊,赵显林,杨 婷,李亚鑫,贾汉忠,周建利.土壤石油污染对9个玉米(Zea mays L.)品种种子萌发及幼苗生长的影响[J].西北农业学报,2021,(12):1777~1786
DOI:10.7606/j.issn.1004-1389.2021.12.003
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作者单位
罗 巧,段 磊,赵显林,杨 婷,李亚鑫,贾汉忠,周建利 (1.长江大学 农学院湖北荆州 4340252.西北农林科技大学 资源环境学院,陕西杨凌 712100) 
基金项目:国家重点研发计划(2019YFC1804101)。
中文摘要:为了解土壤石油污染对不同品种玉米种子萌发及生长的影响,通过人工模拟原油污染土壤,研究4个浓度梯度(0、50、100、150 g/kg)的土壤石油污染下9个玉米品种(5个饲料玉米品种和4个甜玉米品种)的种子萌发和幼苗生长的响应特征。结果表明:随着土壤石油污染浓度的递增,9个玉米品种的种子萌发指标(发芽率和发芽指数)和幼苗生长指标(苗高、根长、地上部生物量和根质量)均呈现显著下降的趋势;在各种浓度的土壤石油污染胁迫下,饲料玉米的耐受性均强于甜玉米;在土壤石油污染浓度为50 g/kg条件下,'先优666'品种的种子萌发性状和幼苗生长性状在9个玉米品种中均最优,而'中科11'品种则在土壤石油污染浓度为100 g/kg和150 g/kg条件下其种子萌发性状和幼苗生长性状均最优。综合分析,'先优666'和'中科11'玉米品种分别具有修复低浓度和中高浓度石油污染土壤的潜力。
中文关键词:玉米  石油污染  土壤  种子萌发
 
Effect of Soil Petroleum Pollution on Seed Germination and Seedling Growth of Nine Maize Cultivars(Zea mays L.)
Abstract:To understand the effect of soil oil contamination on the germination and growth of different maize cultivars, soil contaminated by crude oil was artificially simulated to investigate the response characteristics of seed germination and seedling growth of 9 maize cultivars (5 forage maize cultivars and 4 sweet maize cultivars) at four concentrations (0, 50, 100 and 150 g/kg) .The results indicated that the seed germination index and seedling growth index (seedling height, root length, aboveground biomass and root mass) decreased significantly under the treatment of different pollution concentrations. Meanwhile, forage maize showed stronger tolerance to the oil contamination compared with sweet maize. Optimal seed germination rate and seedling growth of 'Xianyou 666' were observed with the oil concentration of 50 g/kg, and 'Zhongke 11' was observed with the oil concentration of 100 and 150 g/kg. Therefore, 'Xianyou 666' and 'Zhongke 11' have the potential to remediate low concentration and medium high concentration oil contaminated soils, respectively.
keywords:Maize  Oil pollution  Soil  Seed germination
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