生物菌肥对土壤生态环境改良效果

Effect of Biological Fertilizer on Improving Soil Ecological Environment

以黄瓜、甜椒和茄子为试材,通过高温闷棚与施用生物菌肥处理,研究土壤微生物种群数量变化,比较分析施用生物菌肥后不同作物产量及品质的变化,探讨土壤改良的效果成因及生物菌肥对作物的产量和品质影响。结果表明:土壤通过高温闷棚处理,有害微生物菌落数量降低,有助于减小因土壤带菌引起的土传病害发病机率。土壤施用生物菌肥后,有益菌在作物生长中后期对土壤微生物菌落结构进行了有效调整,明显提高了根际土壤细菌和放线菌数量,同时降低了真菌数量,有效防止土壤真菌的形成,缓解了土壤连作障碍,达到土壤生态改良目的,并提高了果实产量,改善了果实品质。与未施肥相比,施用生物菌肥后,黄瓜、甜椒和茄子的后期产量分别提高了7.68%、5.54%、0.59%。施用生物菌肥还提高了果实维生素C、可溶性糖、可溶性蛋白质含量以及果实糖酸比,降低了硝酸盐含量。

Taking cucumber, eggplant and pepper as test materials, through high-temperature sealing treatment technology and application of biological fertilizer, the changes of microbial populations in soil was studied the changes of different crop yield and quality by adding biological fertilizer was compared and analysized, the causes of the effect on soil improvement and effects of biological fertilizer on crop yield and quality were explored. The results showed that the number of harmful microorganisms decreased in the soil by high-temperature sealing treatment, which helped to reduce the incidence of soil borne disease caused by soil borne disease. Taking the initiative to add biological fertilizer in soil, which contain beneficial bacterium could effectively adjust the structure of colony in crop growth later period, the number of bacteria and actinomycetes in rhizosphere soil was significantly increased,and the number of fungi was decreased,it could effectively prevent the formation of fungal soil,alleviate the continuous cropping obstacles, reach the goal of soil ecological improvement, and improve the yield of the fruit, and improve the quality of the fruit. The final production of cucumber, pepper and eggplant increased by 7.68%, 5. 54% and 0.59% respectively. At the same time, application of biological fertilizer also increased the contents of vitamin C, soluble sugar, soluble protein and sugar acid ratio of fruit, and reduced the content of nitrate.