APSA-80对草甘膦增效机制及药效研究

STUDIES ON THE EFFECTS OF GLYPHOSATE AND ADMIXTURE WITH APSA-80 AGAINST WEEDS

在草甘膦（ｇｌｙｐｈｏｓａｔｅ）药液中加入φ为０１％或０２％的ＡＰＳＡ－８０后，表面张力降低了６１５６％和６４８６％；在８种窄叶杂草和９种阔叶杂草叶子上接触角明显降低；药后２０～３０ｄ，防效在８４８５％～９６５６％，单用仅４４３３％～５２３３％，药后４０ｄ时的杂草干物质积累量被抑制在８３８５％以上，抑制率比单用提高了２２２７％～５４１１％结果还表明：ＡＰＳＡ－８０具有延长草甘膦持效期、加快杀草速率以及扩大杀草谱等的作用但在草甘膦药液中加入φ为０１％或０２％的ＡＰＳＡ－８０。

The surface tension of glyphosate solution reduced 61.56% and 64.86% respectively, when added with APSA-80.And the contact angles of solution on leaves of eight slender leaf weeds and nine broad leaf weeds were decreased. Results of field trials indicated that the effects of the admixtures against weeds were 84.85%～96.56% while glyphosate alone was 44.33%～52.33% in 20 to 30 days after treatment. On the 40th day, the inhibitory rates of weeds were over 83.85%, increased by 22.27%～54 11% compared with glyphosate alone. Results also showed that APSA-80 could prolong the effectiveness duration and increase the effect and quicken action of glyphosate against various weeds. The physical properties of the solution and effects on weeds were not significantly different when glyphosate solution mixed with APSA-80 at rates of 0.1% and 0.2%.