摘要
单甲脒盐酸盐属低残留非持久性农药。在棉叶中的半衰期为４．４－８．ｌｄ，在土壤中为１１．４—１２．３ｄ。分别以２５％单甲脒盐酸盐水剂的１０、５０、１００、５００、８００、１０００和１５００倍稀释液喷施７—８次，每次间隔约１５ｄ，在棉籽中检测出单甲脒最高残留为０．１７×１０－６。科学合理地施用单甲脒农药，不会对人体健康造成危害。
The Residue and persistence of pesticide N' -(2,4-Dimethylphenyl)-N-methylformamidine Hydrochloride(DMAH)in cotton field were studied in North China during 1992 and 1993.The results showed that the DMAH was a low residual and nonpersistent pesticide.The half--life values of DMAH was 4.4--8. 1 days in cotton lives and 11.4--12. 3 dsys in soil,respectevely.It was found that the residual level of the pesticide was less than 0.17×10--6 in the cotton seeds at an application rate of 10,or 50,100, 800,1000 and 1500 fold diluted 25%DMAH sollution and in an application frequency of 7 or 8 times with an interval of 15 days between every two applications.
出处
《环境科学》
CAS
CSSCI
CSCD
北大核心
1995年第1期5-7,22,共4页
Environmental Science
基金
国家自然科学基金
关键词
农药
单甲脒
残留
持久性
棉田生态系统
pesticide
N'-(2,4-dimethylphenyl)-N-methylformamidine hydrochloride
residue
persistence
cotton field.
