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【目的】获取促生的同时可抑制尖孢镰刀菌(Fusarium oxysporum)的拮抗菌并明确其防治效果。【方法】平板对峙生长法测定前期分离的19株促生菌对尖孢镰刀菌的抑制作用,温室条件下接种微生物菌剂对西葫芦根腐病的防治作用;田间条件下接种复合菌剂代替部分化肥对西葫芦生长的影响。【结果】可有效拮抗尖孢镰刀菌的菌株有9株,其中,菌株FX2的抑菌活性较好,抑制率达到66.80%。在温室盆栽中,接种微生物菌剂(LHS11+FX2)对西葫芦根腐病抑制率达到57.14%。在田间试验中,微生物菌剂配施化肥对西葫芦的生物量和根系形态影响显著,以85%化肥+复合菌剂处理效果较优,其对西葫芦成熟期的产量显著提高27.13%。【结论】复合菌剂(LHS11+FX2)对西葫芦根腐病具有较好的防治作用;85%化肥+复合菌剂对西葫芦的促生作用明显,在一定程度上节约了化肥投入成本,提高了增产效益。
【Objective】 Inhibition of Fusarium oxysporum can be inhibited and its control effect can be clarified. 【Method】 The plate growth-inhibition method was used to determine the inhibition of Fusarium oxysporum against 19 strains of growth-promoting bacteria isolated in early stage, and the control effect of microbial inocula on the root rot of squash under greenhouse conditions. Effect of Fertilizer on the Growth of Zucchini. 【Result】 Nine strains could effectively antagonize Fusarium oxysporum, of which strain FX2 had good antibacterial activity with the inhibition rate of 66.80%. In greenhouse pots, inoculation of microbial agents (LHS11 + FX2) on squash root rot inhibition rate reached 57.14%. In the field experiment, microbial fertilizer with chemical fertilizers significantly affected the biomass and root morphology of the squash, with 85% fertilizer + compound fungi treatment effect is better, which significantly increased the yield of squash maturity of 27.13%. 【Conclusion】 The compound fungicides (LHS11 + FX2) have good control effect on the squash root rot, while 85% chemical fertilizer and compound antibacterial agents have obvious promoting effect on the summer squash, which saved the cost of fertilizer investment to a certain extent and increased Increase production efficiency.