摘要
采用盆栽试验,模拟Pb和Zn(1000mg·kg-1)胁迫条件下,不同猪粪施用量对小花南芥和中华山蓼生长、生理和Pb、Zn累积特征的影响。结果表明:施用猪粪对土壤pH值的影响不明显,土壤CEC有增加的趋势。土壤中铁锰氧化物结合态没有显著的变化,小花南芥土壤水溶态和可交换态、有机物结合态显著增加。中华山蓼土壤中水溶态和可交换态没有显著的变化,而有机物结合态显著增加。Pb和Zn胁迫下,施用猪粪促进植物根的生长、生物量、叶绿素含量和相对电导率的增加(Pb胁迫下施用猪粪对中华山蓼生物量影响不显著除外)。施用猪粪导致小花南芥中Pb、Zn的含量、累积量、富集系数和转移系数增加,特别是猪粪14g·kg-1处理小花南芥中Pb、Zn的含量和累积量最高。施用猪粪导致中华山蓼中Pb含量和累积量增加,Zn含量和累积量下降,富集系数和转移系数则没有显著的变化。因此,施用猪粪能促进小花南芥和中华山蓼的生长和生理代谢,增加Pb、Zn在小花南芥、Pb在中华山蓼中的含量和累积量,适宜的施用量为猪粪14g·kg-1。
Pot experiments were conducted in order to understand the effects of pig manure application on growth,physiology and accumulation of Pb and Zn in Arabis alpinal var.parviflora Franch and Oxyria sinensis Hemsl with Pb（1000 mg·kg-1）and Zn（1000 mg·kg-1）stresses.The results showed that soil pH value did not vary significantly and CEC increased with increase in pig manure application.Water soluble and exchangeable Pb and Zn increased in soil of A.alpinal and kept stable in soil of O.sinensis.Fe-Mn oxide bound Pb and Zn did not vary significantly.Organic bound Pb and Zn increased significantly with increase in pig manure application.The root length,biomass,leave chlorophyll contents and membrane permeability increased under Pb and Zn stresses with increase in pig manure application,except for biomass of O.sinensis under Pb stress.Contents,accumulation rate,bioaccumulation factor and transfer factor of Pb and Zn in A.alpinal increased with increase in pig manure application,especially contents and accumulation rate reached maximum with pig manure 14 g·kg-1 application.Contents and accumulation rate of Pb in O.sinensis increased and those of Zn decreased with increase in pig manure application.Bioaccumulation factor and transfer factor of Pb and Zn in O.sinensis did not vary significantly.The results indicate that growth and physiology of A.alpinal and O.sinensis could be improved,companying with Pb and Zn contents in A.alpinal and Pb content in O.sinensis increasing with pig manure application under Pb and Zn stresses.The optimal rate of pig manure application was 14 g·kg-1.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2013年第3期508-516,共9页
Journal of Agro-Environment Science
基金
国家自然科学-云南联合基金(U1202236)
国家自然科学基金(41261096)
关键词
PB
ZN
猪粪
小花南芥
中华山蓼
Pb
Zn
Arabis alpinal var.parviflora Franch
Oxyria sinensis Hemsl
pig manure
