摘要
通过对在盐碱土和污染土上种植皇竹草试验的监测,探讨其在退化土壤改良上的应用效果.试验结果表明,皇竹草能直接种植于盐碱土中,并能显著降低盐碱土的pH值,可溶性盐以及Na的含量亦显著下降达25%左右.经客土后,皇竹草能在污染土中正常生长,其对重金属微量元素Zn、Mn、Fe、Cu等有较好的吸附效果.退化土壤改良试验还显示,皇竹草能明显改善其土壤肥力,并获得可观的生物产量.因而,皇竹草可作为退化土壤改良的优良植物种类,具有广阔的应用前景.
This article studies the effects of planting Napier grass（Pennisetum Hydridum）with the purpose of improving the degraded soil,such as saline-alkaline soil and heavy metal contaminated soil.The results show that the Napier grass can direct growth on the saline-alkaline soil normally.And the pH in soil decreases significantly after planting Napier grass,which also reduces the total salt content and the sodium content to 25%.Napier grass grows well on the heavy metal contaminated soil after covering with normal soil.In addition,the heavy metal microelement contents of Zn,Mn,Fe,Cu,etc.declines significantly after planting Napier grass.However,the content of organic matter increases.Addition to this,much more biomass could obtain after improving the degraded soil with Napier grass.So it is suggested that Napier grass（Pennisetum Hydridum） be a kind of excellent species for improving the degraded soil and application widely.
出处
《韶关学院学报》
2012年第2期44-47,共4页
Journal of Shaoguan University
基金
韶关市海粤农业发展有限公司专项基金资助项目(315-315042)
关键词
皇竹草
退化土壤
盐碱土
重金属污染土
Pennisetum hydridum
degraded soil
saline-alkaline soil
heavy metal contaminated soil
