3种助剂对赤子爱胜蚓的急性毒性  

Acute Toxicity of Three Kinds of Pesticide Adjuvants to Earthworms(Eisenia foetida)

作　　者：李正[1] 潘波[2] 林勇[2] 姜蕾[2] 刘迎[2] 

机构地区：[1]中国农业科学院农业环境与可持续发展研究所,北京100081 [2]中国热带农业科学院环境与植物保护研究所,海南海口571101

出　　处：《生态与农村环境学报》2013年第4期519-523,共5页Journal of Ecology and Rural Environment

基　　金：科技部重大国际合作项目(2010DFB30550);中央级公益性科研院所基本科研业务费专项(1630042012010)

摘　　要：为了探究新型助剂LD-10与常用助剂NP-10、NP-4对土壤非靶标生物的影响,以赤子爱胜蚓(Eisenia fetida)为受试生物,采用自然土壤法和灭菌土壤法,研究了这3种助剂对土壤蚯蚓的急性毒性。结果表明,在自然土壤中LD-10、NP-10和NP-4对蚯蚓7 d半致死浓度w(LC50)分别为482.58、1 077.50和343.17 mg.kg-1,14 d的w(LC50)分别为438.38、984.64和316.65 mg.kg-1。在灭菌土壤中LD-10、NP-10和NP-4对蚯蚓7 d的w(LC50)分别为350.71、960.95和309.63 mg.kg-1,14 d的w(LC50)分别为320.24、745.99和274.76 mg.kg-1。在自然土壤和灭菌土壤中3种助剂对赤子爱胜蚓均为低毒,毒性由大到小依次为NP-4、LD-10和NP-10,且3者在灭菌土壤中的毒性均明显高于自然土壤。To explore impacts of a new pesticide adjuvant LD - 10 （patent license number： 200810103519. 7） and two commonly used pesticide adjuvants NP- 10 and NP- 4 on non-target organisms in soil, acute toxicities of LD- 10, NP- 10 and NP- 4 to earthworm （Eisenia fetida） in natural soil and sterilized soil were determined. Results show that in the natural soil, the 7 d w（LCs0） of LD - 10, NP - 10 and NP -4 for earthworm was 482. 58, 1 077.50 and 343.17 mg · kg^-1 , respectively, and 14 d w（LC50） 438.38 , 984. 64 and 316. 65 mg · kg^-1, respectively, and in the sterilized soil, the 7 d w（LC50） of LD - 10, NP - 10 and NP -4 for earthworm was 350. 71, 960. 95 and 309. 63 mg · kg^-1 , respectively, and 14 d w（ LC50 ） 320.24, 745.99 and 274.76 mg · kg^-1 , respectively, which shows that in both the natural and sterilized soils, the three agents are all low in toxicity to the earthworm, and follow the order of NP - 10 〈 LD - 10 〈 NP - 4 in toxicity, however, they are more toxic in the sterilized soil than in the natural soil.

关 键 词：助剂 半致死浓度(LC50) 赤子爱胜蚓 毒性 

分 类 号：X592[环境科学与工程—环境工程]