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| 菌粉、草木灰对Cu2+胁迫下牧草幼苗生长的影响 |
| Effects of Fungus Powder and Plant Ash on the Growth of Pasture Seedlings under Cu2+ Stress |
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| DOI： |
| 中文关键词: Cu2+污染 牧草 菌粉 草木灰 土壤修复 |
| 英文关键词: Cu2+ pollution Pasture Fungus powder Plant ash Soil remediation |
| 基金项目:国家自然科学基金资助项目(41271244)；四川省教育厅基金资助项目(18ZB0576)；四川省科技厅基金资助项目(2018JY0224) |
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| 摘要点击次数: 662 |
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| 中文摘要: |
| 采用盆栽实验探究菌粉和草木灰添加对Cu2+胁迫土样上牧草幼苗发芽率、株高、地上部和根系生物量等特征的影响，并分析各生长指标间的相关性。结果显示：当Cu2+超过200 mg/L时，菌粉和草木灰的添加促进苏丹草的发芽而对黑麦草发芽影响不大，两种牧草的幼苗株高均随生长时间的增加而增加，增长速度整体表现为生长初期(前5天)大于后期(后5天)。菌粉添加不利于苏丹草和黑麦草的生物量的增加，而菌粉+草木灰添加可促进两种牧草生物量的增加。两种牧草的各生理指标之间均保持中度以上正相关关系，添加菌粉和草木灰有利于牧草幼苗在Cu2+污染土样上生长 |
| 英文摘要: |
| The effects of fungus powder and plant ash on the germination rate, plant height, above ground and root biomass of pasture seedling under Cu2+stress were studied by pot experiment, and the correlations between each growth index were analyzed. The results showed that when the concentration of Cu2+ exceeded 200 mg/L, fungus powder and plant ash had significant effects on the germination of Sudangrass, but little effect on Ryegrass. The plant height of Sudangrass and Ryegrass seedling was increased with the growth time, and the growth rate at the early growth stage (the previous 5 d) was greater than that at the late stage (the last 5 d).Fungus powder did not make the biomass of Sudangrass or Ryegrass increase, while Fungus powder plus plant ash did. The physiological indexes of the two pastures maintained a moderate or above positive correlation. The addition of fungus powder and plant ash in Cu2+ contaminated soil was beneficial to the growth of pasture seedlings. |
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