多菌灵与微生物有机肥复合对连作平邑甜茶幼苗及土壤的影响

为探索多菌灵与微生物有机肥对苹果连作障碍的缓解效果,以连作土盆栽平邑甜茶幼苗为试材,研究了多菌灵、微生物有机肥对平邑甜茶幼苗生长和土壤环境的影响。结果表明:与连作土对照相比,多菌灵和微生物有机肥复合施用可提高根系呼吸速率,促进根系生长,提高幼苗生物量,其中株高提高了38%,呼吸速率提高了36%;细菌/真菌值达到连作土对照的19.07倍;改变了土壤真菌群落结构,其中复合处理具有较高的优势度指数与较低的多样性、均匀度、丰富度指数;微生物有机肥、多菌灵与微生物有机肥复合施用对土壤酶有显著促进作用。因此,多菌灵与微生物有机肥复合施用可以更好地缓解苹果连作障碍。

Effects of Carbendazim and Bio-organic Fertilizer on Malus hupehensis Seedlings and Soil Under Replant Condition

This experiment was conducted to explore the effect of carbendazim and bio-organic fertilizer on the apple replant disease. The Malus hupehensis Rehd. seedlings were planted in pots with apple replant soil. The effect of carbendazim combined with bio-organic fertilizer on Malus hupehensis Rehd. seedlings growth，and soil enviroment were studied. Compared with replant soil control，carbendazim，bio-organic fertilizer combined ap plication could improve root respiration rate，promote the growth of root system，improve the biomass of seedlings. The plant height and root respiration rate were increased 38% and 36% respectively. The bacterial/fungal ratios reached 19.07 times of control group of  apple replanted soil，so that it became the maximum number among the three groups. The soil fungi community structure was changed，the combined application treatment had higher simpson index and lower shannon index，pielou index and margalef index；bio-organic fertilizer，carbendazim and bio-organic fertilizer combined application had significant effects on the soil enzymes. Therefore，carbendazim and bio-organic fertilizer combined application had the better effect on apple replant disease remission.