大豆/玉米带状复种下添加不同微生物菌剂对土壤生态环境及产量的影响OA

In order to explore the effects of adding different microbial agents on soil ecological environment and yield under soybean/maize strip intercropping,soybean variety'Jidou 12'and corn variety'MC121'were used as materials,and 6 fertilization treatments were set including conventional fertilization(CF),adding Bacillus bactericide(BAC),bio-phosphate potassium fertilizer(BPA),complex microbial agent(CMA),soil remediation agent(SRM),ARC microbial inoculant(ARC).The soil physicochemical indexes and the microbial diversity and population structure under different treatments were analyzed.And the yields of soybean and maize under different treatments were determined.The results showed that,compared with CF treatment,the available phosphorus content in soil of BAC treatment was significantly increased by 27.20%,the available potassium content of BPA treatment was significantly increased by 53.33%,and the organic matter content of CMA treatment was significantly increased by 16.67%,the total nitrogen content of ARC treatment was significantly increased by 19.67%,and the Chao index,Ace index and Sobs index of ARC treatment were the highest with 4 252.52,4 369.57 and 3 422.00,respectively.The yields of soybean and corn of microbial agent treatments increased by 6.90%～32.73%and 1.24%～14.58%compared with CF treatment.To sum up,compared with conventional fertilization,the adding of microbial inoculants including Bacillus inoculants,biophosphatic and potassium fertilizers,composite microbial inoculants,soil remediation inoculants and ARC microbial inoculants could affect the soil physicochemical properties,improve the richness and diversity of soil bacteria,and increase yields of soybean and corn.According to the comprehensive effect of soil physicochemical properties,microbial abundance and crop yield,BPA fertilization treatment had the best effect.