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以生防放线菌Snea253菌株发酵液为主,配合其它微生物菌株制备生物种衣剂对大豆种子进行包衣处理,于播种后30～35 d计数大豆根外胞囊数量、土壤中胞囊数量和根内线虫数量,研究了Snea253生物种衣剂对大豆胞囊线虫的防治效果。结果表明:生物种衣剂A(复配菌株Snea253+Sneb207+元素组合+助剂)在康平和大庆试验基点对大豆根和土壤中胞囊线虫的抑制率显著高于空白对照和商品种衣剂对照,生物种衣剂B(复配菌株Snea253+Sneb482+Snef1024+元素组合+助剂)和生物种衣剂C(Snea253+元素组合+助剂)与商品种衣剂效果相当。从大豆植株的长势和测产的结果可知,生物种衣剂既可促进大豆的生长发育,还可有效抑制线虫繁殖,尤其生物种衣剂A促生、增产和控制胞囊线虫的效果显著。
Snea253 strains of biocontrol actinomycete fermentation broth-based, with other strains of microorganisms to prepare biological seed coating agent of soybean seed coating, 30 to 35 days after sowing count soybean outer cysts, the number of cysts in soil And the number of nematodes in the root, the control effect of Snea253 biological seed coating agent on soybean cyst nematode was studied. The results showed that the inhibition rate of biological seed dressing A (compound strain Snea253 + Sneb207 + element combination + additive) on cyst nematode in soybean root and soil was significantly higher than that of blank control and commercial seed coating control , Biological seed coating B (compound strain Snea253 + Sneb482 + Snef1024 + element combination + additive) and biological seed coating C (Snea253 + element combination + additive) are similar to the commercial seed coating agent. From the growth of soybean plants and the test results show that the biological seed coating can not only promote the growth and development of soybeans, but also effectively inhibit the growth of nematodes, especially biological seed coating A promote growth, yield and control of cyst nematode effect is remarkable.