北方农田土壤有机碳对不同物料投入的响应

Response of Soil Organic Carbon to Different Materials Input in Northern Farmland

[目的]分析我国北方农田土壤有机碳和微生物量碳、氮、磷对不同物料投入的响应。[方法]利用Meta分析方法,整合了1980—2015年间不同物料投入对土壤有机碳和微生物量碳、氮、磷影响的研究结果,定量分析不同物料投入对土壤有机碳和微生物量碳、氮、磷影响程度。[结果]外源物料投入均提高土壤有机碳,但不同物料效果不一,其中施用有机肥,有机肥与化肥配施,化肥与秸秆配施效果最好。外源物料投入对微生物量碳、氮和磷提升有显著正效应,施用有机肥对微生物量碳和氮的效果最好,化肥与秸秆配施有利于微生物量磷的提升。[结论]研究可为定量研究不同物料投入对北方农田农田土壤有机碳和微生物量碳、氮和磷提供一定的科学论据。

[Objective]In order to analyze the response of soil organic carbon and microbial biomass carbon,nitrogen and phosphorus to different materials input in northern farmland of China.[Method]The effects of different materials input on soil organic carbon and microbial biomass carbon,nitrogen and phosphorus from 1980 to 2015 were analyzed by Meta-analysis method,and they were analyzed quantitatively.[Result]Exogenous material input increased soil organic carbon,but the effects of different carbon sources were different.Among them,applying organic fertilizer,organic fertilizer and chemical fertilizer,chemical fertilizer and straw had the best effect.Exogenous material input had a significant positive effect on microbial biomass carbon,nitrogen and phosphorus.Organic fertilizer had the best effect on microbial biomass carbon and nitrogen,and the combination of chemical fertilizer and straw was beneficial to microbial biomass phosphorus.[Conclusion]This study could provide some scientific evidence for quantitative study of soil organic carbon and microbial biomass carbon,nitrogen and phosphorus in northern farmland with different material inputs.