氮肥减量配施生物有机肥对设施土壤微生态及茄子产量、品质的影响OA

In order to improve the soil microecological environment and enhance the yield and quality of eggplant,this study used the Lushuai eggplant as the material and adopted soil cultivation methods.Five treatments were set up:No fer-tilization(CK),single application of bio organic fertilizer(T1),single application of chemical fertilizer(T2),nitrogen fer-tilizer reduction of 10%combined with bio organic fertilizer 1800 kg·hm-2(T3),nitrogen fertilizer reduction of 20%com-bined with bio organic fertilizer 2400 kg·hm-2(T4),to explore the effects of nitrogen fertilizer reduction combined with bio-organic fertilizer on the soil microecology and eggplant yield and quality in the facility.The results indicate that the soil alkaline nitrogen content,available phosphorus content,available potassium content,sucrase activity,urease activity,and catalase activity under T3 treatment reached their highest level at all growth stages.Compared with T2 treatment,soil microbial community diversity was higher under T3 treatment.Under T3 treatment,the spring yield,autumn yield and to-tal yield of eggplant were the highest,with 135.96,148.77,and 284.73 t·hm-2,respectively.Compared with T2 treatment,the yield were significantly increased by 16.26,8.87,and 25.13 t·hm-2,respectively.The quality of eggplant skin and the content of soluble protein,soluble sugar,and vitamin C of T3 treatment are higher,resulting in the best overall quality.Based on various indicators,T3 treatment,which involves reducing nitrogen fertilizer by 10%and applying 1800 kg·hm-2 bio-organic fertilizer,can promote the transformation and accumulation of soil nutrients,enhance soil enzyme activity,op-timize soil microbial environment,and improve eggplant yield and quality,with the best effect.