| 宋拉拉1，廖芳芳1，张爱民1，胡明文1，蓝 青2，邢 丹1.辣椒对黄壤和石灰土中Cd抗性研究[J].广东农业科学,2018,45(7):73-80 |
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辣椒对黄壤和石灰土中Cd抗性研究 |
| Study of Cd resistance of pepper planted inyellow soil and calcareous soil |
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| DOI：10.16768/j.issn.1004-874X.2018.07.012 |
| 中文关键词: 辣椒 土壤 生物量 生理特性 综合评价 Cd抗性 |
| 英文关键词: pepper soil biomass physiological characteristics comprehensive evaluation Cd resistance |
| 基金项目:贵州省农业攻关项目（黔科合NY[2015]3018-2）；贵州省农科院自主创新科研专项（黔农科自主创新科研专项字[2014]012号）；贵州省科技合作计划项目（黔科合LH字[2015]7076）；贵州省农业科学院青年基金（黔农科青年基金[2018]67号） |
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| 中文摘要: |
| 以贵州典型土壤（黄壤和石灰土）为盆栽供试土壤，以朝天椒8024为材料，通过模拟制备不同浓度Cd污染黄壤和石灰土，将辣椒幼苗分别种植于Cd污染的土壤中，测试不同土壤中辣椒的株高、生物量及相关生理特性。结果显示，随着土壤中Cd浓度增加，辣椒株高、根生物量、茎生物量、叶生物量均呈下降趋势，且黄壤中辣椒株高及其生物量均高于石灰土中的辣椒；MDA含量均表现出上升趋势，且同一浓度处理下，种植于黄壤中辣椒MDA含量高于石灰土中辣椒MDA含量；SOD活性均表现出先升后降的趋势，黄壤中Cd浓度在2.5 mg/kg时SOD活性达到最高值，石灰土中Cd浓度在0.5 mg/kg时SOD活性达到最高；POD活性在黄壤土中表现出上升趋势，但在石灰土中表现出下降趋势。利用隶属函数法综合评价，种植于黄壤中的辣椒对Cd抗性的评价D值大于石灰土。表明高浓度Cd抑制辣椒幼苗的生长，且种植于黄壤土中辣椒的Cd抗性高于石灰土中的辣椒。研究结果为辣椒种植和土壤改良提供了理论依据。 |
| 英文摘要: |
| In order to evaluate the Cd resistance of pepper in yellow soil and calcareous soil, this study prepared the soil which is at different pollution levels and contaminates different types of Cd, then planted the pepper 8024 seedlings in Cd contaminated soil, and tested the seedling growth and physiological characteristics of pepper in different types of Cd contaminated soil. The results showed that the plant height, root biomass, stem biomass and leaf biomass of pepper decreased with the increasing of Cd concentration in the soil, and the height and biomass of pepper in the yellow soil were higher than those in the calcareous soil. MDA content showed a rising trend, and the same concentration, MDA content of pepper planted in yellow soil was higher than that of calcareous soil. SOD activity first increased and then decreased, the concentration of Cd in yellow soil in 2.5 mg/kg SOD activity reached the highest, but the concentration of Cd in calcareous soil in 0.5 mg/kg the highest. POD activity showed an upward trend in the yellow soil, but showed a downward trend in calcareous soil. Comprehensive evaluation by subordinate function method was conducted. The resistance to Cd D value of pepper which planted in yellow soil was greater than that in calcareous soil. The results showed that the high concentration of Cd inhibited the growth of pepper seedlings, and pepper in yellow soils was higher than that of Cd resistance in calcareous soil. The results provided a theoretical basis for pepper cultivation and soil improvement. |
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