Effects of Combined Application of Oyster Soil Conditioner and Compound Microbial Agent on Flue-cured Tobacco Yield and Soil Quality Improvement
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摘要: 为探究土壤改良剂配施复合微生物菌剂对烤烟产量及土壤质量的影响.采用单因素随机区组试验设计设置4个处理:单施复合微生物菌剂、复合微生物菌剂+牡蛎类土壤调理剂300 kg/hm2、复合微生物菌剂+牡蛎类土壤调理剂600 kg/hm2、复合微生物菌剂+牡蛎类土壤调理剂1 200 kg/hm2.结果表明,复合微生物菌剂配施牡蛎类土壤调理剂能够促进烟株发育,株高、有效叶片数、平均叶面积和叶面积系数显著增加;且能有效改善植烟土壤质量,土壤pH值与有机质含量显著增加,碱解氮、有效磷与速效钾的利用率提高,酸性磷酸酶、脲酶、蔗糖酶和过氧化氢酶活性显著提升.此外,复合微生物菌剂配施牡蛎类土壤调理剂,对田间镰刀菌根腐病发生具有一定的调控作用,其中配施调理剂600 kg/hm2和1 200 kg/hm2最终防治效果分别达到了39.36%和42.73%;对经济效益进行分析,复合微生物菌剂配施土壤调理剂600 kg/hm2与1 200 kg/hm2后的烤烟产值最高达到48 634.68元/hm2与48 553.54元/hm2,显著高于对照.由此可见,复合微生物菌剂配施牡蛎类土壤调理剂能够有效改良土壤,降低镰刀菌根腐病发生率,增加烤烟种植收益,在今后的根茎病害绿色防控中具有良好的应用前景.Abstract: In order to investigate the effect of combined application of the soil conditioner and compound microbial agent on the yield and soil quality of flue-cured tobacco, single-factor randomized block experiments were conducted. Four treatments were set as follows: single application of compound microbial agent, 300 kg/hm2 of compound microbial agent and oyster soil conditioner, 600 kg/hm2 of compound microbial agent and oyster soil conditioner, and 1, 200 kg/hm2 of compound microbial agent and oyster soil conditioner. The results show that the combined application of oyster soil conditioner and compound microbial agent can effectively promote the development of tobacco plant, as the plant height, effective leaf number, average leaf area and leaf area coefficient increased significantly. In addition, it can effectively improve the quality of tobacco-planting soil with significant increase in soil pH and organic matter content, utilization rate of alkali hydrolyzable nitrogen, available phosphorus and rapidly available potassium, and activities of acid phosphatase, urease, sucrase and catalase. In addition, the combined application of compound microbial agent and oyster soil conditioner can moderate the incidence of Fusarium root rot in the field to a certain extent. Among them, the final control effect of 600 kg/hm2 and 1, 200 kg/hm2 of combined conditioner reached 39.36% and 42.73%, respectively. In terms of economic benefits, the production value of flue-cured tobacco reached 48, 634.68 yuan/hm2 and 48, 553.54 yuan/hm2, respectively, after the application of 600 kg/hm2 and 1, 200 kg/hm2 of combined soil conditioner, which is significantly higher than that of the control group. Overall, the combined application of compound microbial agent and oyster soil conditioner can effectively improve the soil quality, reduce the incidence of Fusarium root rot, and increase the yield of flue-cured tobacco. Therefore, it has a good application prospects in the green prevention and control of root diseases in the future.
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Key words:
- oyster soil conditioner /
- bactericide /
- tobacco yield /
- soil enzyme activity .
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