中国农业大学学报2024，Vol.29Issue(6)：187-196,10.DOI:10.11841/j.issn.1007-4333.2024.06.19
液态农用酵素及其不同组分对原生和农田土壤的改良效果
Improvement effects of liquid agricultural Jiaosu and its different components on native and arable soils
摘要
Abstract
In order to explore the improvement effects of liquid agricultural Jiaosu and its different components on native soil and arable soil,liquid agricultural Jiaosu were separated by centrifugation and the supernatant and enzyme bacterial solution were obtained.Using soil indoor cultivation method,sterile water(CK)as the control,native soil and arable soi were treated with the supernatant of Jiaosu(T1),microorganism solution of Jiaosu(T2)and liquid agricultural Jiaosu(T3),respectively.The improvement effects of the different treatments on the two soils were evaluated in terms of soil aggregates,enzyme activities,physical and chemical properties and microorganisms.The results showed that:1)Compared with CK,sucrase activity of negative soil was significantly increased by 501.67％and 2 173.5％(P＜0.05)on day 14 under T1 and T3 treatments,and the sucrase activity of arable soil was significantly increased by 896.5％and 1484.49％on day 21,respectively(P＜0.05).2)The pH of native soil under T1 treatment and arable soil under T3 treatment increased from 6.75 and 6.8(day 0)to 7.49 and 6.94(day 28),respectively.Compared with CK,the conductivity of arable soil under T3 treatments was significantly increased by 10.13％(P＜0.05)on day 21,and the conductivity of negative soil under T3 treatment was significantly increased by 29.68％(P＜0.05)on day 28.3)Compared to CK,the actinomycetes of negative soil and bacteria of arable soil under T2 treatment significantly increased by 415.71％and 1 137.84％,respectively(P＜0.05).The actinomycetes of arable soil under T1 treatment significantly increased by 81.69％(P＜0.05),and the number of fungi in the native soil under T3 treatment significantly increased by 44.44％(P＜0.05).4)Compared with CK,the number of aggregates more than 2 mm grain size in the native soil significantly increased by 35.25％,39.80％and 35.77％under T1,T2,and T3 treatment,respectively(P＜0.05).The number of fungi in the arable soil under T1 treatment ranged 0.3 to 1 mm particle-size aggregates increased significantly by 77.65％(P＜0.05).The average mass diameter of soil aggregates MWD and geometric mean diameter of soil GMD of native soil under T2 treatment increased significantly by 17.38％and 22.55％,respectively(P＜0.05).5)The supernatant of liquid agricultural Jiaosu played an important role in the native soil and arable soil.6)The conductivity was significantly and positively correlated with soil urease(P＜0.05)and soil sucrase activity(P＜0.001),and pH was significantly and positively correlated with MWD and GMD(P＜0.001).In conclusion,liquid agricultural enzymes can rapidly activate native and arable soils and improve soil enzyme activity and agglomerate stability,and its supernatant plays a major role.关键词
农用酵素/土壤酶活/土壤团聚体/土壤改良Key words
agricultural Jiaosu/soil enzyme activity/soil aggregates/soil improvement分类
农业科技引用本文复制引用
符明清,范鹤龄,张丽,李昌珍,张荣萍..液态农用酵素及其不同组分对原生和农田土壤的改良效果[J].中国农业大学学报,2024,29(6):187-196,10.基金项目
海南省自然科学基金项目(323RC419) （323RC419）
