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在７５０ 倍的井冈霉素药液中加入０ ．０１ ％ 、０ ．０２ ％ 和０ ．０４ ％ 浓度的表面活性剂ＡＰＳＡ８０ 后，其表面张力降低了３２ ．８７ ％ ～５３ ．６６ ％ 、药液液滴在水稻的叶表面和叶背面的接触角分别降低了２５ ．２６ ％ ～５１ ．９８ ％ 和３６ ．８８ ％ ～４７ ．３４ ％ ，在叶鞘上降低２２ ．３８ ％ ～３７ ．１８ ％ ；药液在叶片上的沉积量提高约１ ．６ 倍； 盆栽试验结果表明，ＡＰＳＡ８０ 能够提高井冈霉素药液抗雨水冲刷能力； 田间药效试验结果显示，ＡＰＳＡ８０ 能够提高井冈霉素防治纹枯病的效果和延长其持效期。药后１４ ｄ ，加入０ ．０２ ％ 和０ ．０４ ％ ＡＰＳＡ８０ 的处理防效明显高于单用；药后２１ ｄ ，加入０ ．０４ ％ 的，防效仍保持８６ ．５８ ％ （９６ 年） 和９０ ．９３ ％ （９７ 年） ，极明显高于单用
At 750 times the validamycin solution was added 0. 01%, 0. 02% and 0. 04% concentration of surfactant APSA 80, the surface tension decreased by 32. 87% ~ 53. 66%. The contact angle of liquid droplets on leaf surface and back of rice leaf decreased by 25%. 26% ~ 51. 98% and 36. 88% ~ 47. 34% lower on leaf sheaths. 38% ~ 37. 18%; liquid deposits on the leaves increased by about 1. 6 times. The results of pot experiment showed that APSA80 could improve the anti-rain water scouring ability of validamycin. The field efficacy test showed that APSA80 could enhance the effect of Jinggangmycin against sheath blight and prolong its persistence period . After 14 d, add 0. 02% and 0. 04% APSA 80 treatment control effect was significantly higher than single; 21 d after drug, add 0. 04%, anti-effect remains at 86. 58% (96 years) and 90%. 93% (97 years), very significantly higher than single use