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碘甲磺隆钠盐对土壤中几种生物学指标的影响
引用本文:郭正元,唐美珍,袁敏,杨仁斌,徐珍.碘甲磺隆钠盐对土壤中几种生物学指标的影响[J].农药学学报,2005,7(1):88-91.
作者姓名:郭正元  唐美珍  袁敏  杨仁斌  徐珍
作者单位:1.湖南农业大学 农业环境保护研究所,湖南 长沙 410128
基金项目:农业部下达的中法合作项目(NC20021406).
摘    要:通过模拟实验研究了除草剂碘甲磺隆钠盐对土壤中脲酶、过氧化氢酶、呼吸作用及土壤微生物生物量碳的影响。结果表明:碘甲磺隆钠盐在田间施用量(1 mg/kg)下对土壤脲酶和微生物生物量碳的影响呈现为显著的抑制-恢复过程;对土壤过氧化氢酶的影响呈现出轻微的抑制-激活-恢复过程。碘甲磺隆钠盐施用初期对土壤呼吸作用也有一定的影响,浓度愈大,对土壤呼吸强度的抑制愈强,但随着时间的推移,逐步由抑制作用转为一定程度的激发作用,到12 d后施药土壤与对照组土壤的呼吸强度基本上趋于一致。统计分析结果表明,碘甲磺隆钠盐属于低毒或无实际危害的农药。

关 键 词:碘甲磺隆钠盐    土壤    微生物生物量碳        呼吸作用
文章编号:1008-7303(2005)01-0088-04
收稿时间:7/1/2004 12:00:00 AM
修稿时间:2004年7月1日

Effects of Iodosulfuron-methyl Sodium on Several Biological Indicators in Soil
GUO Zheng-yuan,TANG Mei-zhen,YUAN Min,YANG Ren-bin and XU Zhen.Effects of Iodosulfuron-methyl Sodium on Several Biological Indicators in Soil [J].Chinese Journal of Pesticide Science,2005,7(1):88-91.
Authors:GUO Zheng-yuan  TANG Mei-zhen  YUAN Min  YANG Ren-bin and XU Zhen
Institution:1.Institute of Agro-Environmental Protection, Hunan Agricultural University, Changsha 410128, China
Abstract:The effects of iodosulfuron-methyl sodium on several biological indicators in soil were studied by stimulated methods in laboratory. The results showed that the soil urease activity and (microbial) biomass carbon were restrained significantly, and then, come consistent with CK, and the catalase activity of soil was lightly restrained at first, then stimulated and recovered as the soil treated with iodosulfuron-methyl sodium at a level of 1 mg/kg. Iodosulfuron-methyl sodium also had some effects on soil respiration, the higher concentration the greater influence during the early days. But as time goes on, the restraining of respiration turns to stimulating, and after 12 days it showed almost no difference between the respiration of soil treated by iodosulfuron-methyl sodium and CK soil. The (result) of statistical analysis showed that iodosulfuron-methyl sodium is a low toxicity or not (harmful) herbicide.
Keywords:iodosulfuron-methyl sodium  soil  microbial biomass carbon  enzyme  respiration
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