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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (18): 238-245.doi: 10.11924/j.issn.1000-6850.2012-1140

• 植物保护 农药 • 上一篇    下一篇

Sr18生防制剂的杀线虫谱研究

李平 田阳 高丙利 孙建华   

  • 收稿日期:2012-03-27 修回日期:2012-04-16 出版日期:2012-06-25 发布日期:2012-06-25
  • 基金资助:

    国家自然科学基金资助项目

The Nematicidal Spectrum of Bio-nematicides from Filamentous Fungus Sr18

  • Received:2012-03-27 Revised:2012-04-16 Online:2012-06-25 Published:2012-06-25

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摘要：

为检测Sr18生防制剂的杀线虫谱。本实验通过室内法测定了Sr18的4种不同调配制剂S01-S04对南方根结线虫、大豆孢囊线虫和松材线虫的作用效果。结果表明：4种生防调配制剂对南方根结线虫的致死效果最强，稀释至8倍的校正死亡率均达到100%；对大豆孢囊线虫，生防制剂S01和S03（原始pH制剂）16倍稀释液的校正死亡率均可达到85%以上；而对松材线虫的致死率高的是S02和S04（中性pH制剂），8倍稀释液仍可达到100%。实验证实Sr18生防制剂是一种有效的广谱生物源杀线剂，在重要植物寄生线虫病害的生物防治方面具有广阔的应用前景。

关键词: 测量不确定度, 测量不确定度

Abstract:

For finding out the nematicidal spectrum of bio-nematicides from filamentous fungus Syncephalastrum racemosum (Sr18), in-vitro methods were developed to test the four different preparations of bio-nematicides, S01-S04, affecting nematode mobility of three nematodes including root knot nematode (RKN), soybean cyst nematode (SCN) and pine wood nematode (PWN). A serious of acute toxicity tests exhibited that the bio-nematicides were effective strongly to RKN, Meloidogyne incognita, and all of 8× diluted concentrations had corrected mortality of 100% differing from CK significantly; to SCN, Heterodera glycines, 16×dilution of S01 and S03 (the two nematicides with original pH) had corrected mortality of above 85%; on the contrary with SCN, S02 and S04 (the two neutral samples) had high nematicidal effects on PWN, Bursaphelenchus xylophilus, 100% corrected mortality from original concentrations to those at 8×diluted. Bio-nematicides from Sr18 shown good effects on the three species of nematodes were effective broad-spectrum biological nematicides, and would had the widespread application of several major plant-parasitic nematodes.