| 农药单甲脒盐酸盐在棉田生态系统中的残留及持久性研究 |
| 摘要点击 733 全文点击 889 投稿时间：1994-05-10 |
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| 中文关键词 农药 单甲脒 残留 持久性 棉田生态系统 |
| 英文关键词 pesticide N'-(2,4-dimethylphenyl)-N-methylformamidine hydrochloride residue persistence cotton field |
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| 中文摘要 |
| 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。 |
| 英文摘要 |
| 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. |
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