摘要
采用生物培养试验,测定了棕壤条件下,美国铜基杀菌剂Kocide2000(KCD)、波尔多液营养保护剂(BNPP)和硫酸铜(CS)3种铜制剂对作物(小麦、番茄、油菜)种子发芽、根茎伸长和发芽种子质量抑制的生态毒性效应。结果表明,铜制剂对3种作物种子根的伸长抑制率均明显大于对种子发芽、茎伸长和发芽种子质量的抑制率。统计分析表明,铜制剂施用浓度与植物发芽指数的相关系数最高,其次是根伸长抑制率。可以植物发芽指数、根伸长为指标研究铜制剂污染毒性与植物响应的剂量及效应关系。不同植物对铜制剂污染物的毒性响应具有明显差异,3种植物对铜制剂的敏感顺序为油菜>番茄>小麦,油菜可用作铜制剂污染土壤毒理诊断的指示植物。此外,由于铜制剂自身性质的不同,作物对其毒性响应不同,尤以对CS最敏感,BNPP和KCD次之。因此,在评价粉剂型铜制剂对环境的影响时,应充分考虑其自身的特点。
A biological incubation experiment was conducted to testify the inhibition effect of three copper-based pesticides Kocide 2000 （KCD）, Bordeaux nutrition protective powder（BNPP） and Bordeaux mixture （BDM） on rates of seed germination, root and stem elonga- tion, and quality of sprouting seed for three plants （wheat, tomato and cole ） in brown soil. Results indicated that the inhibition effect on rates of three pesticides on root elongation of plant were greatest, compared to that on seed germination, stem elongation and quality of sprouting seed. Statistical analyses showed that correlation coefficient between rate of copper-based pesticides and seed germination index was the greatest, followed by inhibition rate of root elongation. Thus, plant germination iridex and root elongation could possibly be used as indices to investigate the relationship between pesticide toxicity and plant response. Plant varieties responded to copper toxicity varied significantly. The sensitivity of to copper-based pesticides was cole〉tomato〉wheat; therefore, cole could be used as indicative plant to diagnose the toxicity of copper-based pesticide on soil quality. Furthermore, plants responded differently to three copper-based pesticides due to its own characteristics, plants being more sensitive to CS than to BNPP and KCD. Thus, the characteristics of copper-based pesticides should be taken into full consideration to appraise its impact on environment.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2009年第10期2010-2016,共7页
Journal of Agro-Environment Science
基金
山东农科院创新基金(2007ycx023-01)
国家"948"项目(201054)
教育部"高等学校骨干教师资助计划"[教技司(2000)65号]
关键词
铜制剂
作物种子
发芽
根茎伸长
生态毒性
copper-based pesticide
plant seed
germination
root and stem elongation
eco-toxicity
