土壤2023，Vol.60Issue(5)：991-1000,10.DOI:10.13758/j.cnki.tr.2023.05.008
长期外源有机物料添加对川中丘陵区农田土壤养分和有机碳组分的影响
Effects of Exogenous Organic Materials on Soil Nutrients and Organic Carbon Components in Hilly Region of Central Sichuan,China
摘要
Abstract
Based on different fertilization treatments in Yanting Purple Soil Agro-Ecological Experimental Station for a long period,the effects of two forms of exogenous organic materials(pig manure composting and straw returning)on the contents of soil organic carbon,total nitrogen,total phosphorus,nitrate nitrogen and available phosphorus were explored,and soil organic carbon components were analyzed by 13C nuclear magnetic resonance spectroscopy(13C-NMR).The results showed that organic materials addition significantly increased the contents of soil organic carbon and nutrients in 0-30 cm soil,the contents of organic carbon,total nitrogen,total phosphorus,available phosphorus and nitrate nitrogen increased by 22.13%-100.15%,28.98%-84.29%,18.33%-94.17%,38.52%-152.36%and 219.45%-741.78%,respectively.The effects of pig manure compost on the contents of total phosphorus,available phosphorus and nitrate nitrogen in soil were greater than those of straw returning.Both pig manure and straw addition caused changes of soil organic carbon components of tilled soil(0-20 cm),which increased the proportions of alkoxy carbon and carboxyl carbon and decreased the proportion of alkyl carbon at 0-10 cm soil,while increased the proportion of carboxyl carbon but increased the proportion of alkyl carbon at 10-20 cm soil.In conclusion,long-term addition of organic materials can significantly improve the organic carbon pool and its stability of dry farmland in hilly areas of central Sichuan.This work could provide scientific reference for evaluation of carbon sink function.关键词
土壤有机碳/有机碳组分/土壤养分/有机物料/紫色土Key words
Soil organic carbon/Organic carbon components/Soil nutrients/Organic materials/Purple soil分类
农业科技引用本文复制引用
刘玲,崔俊芳,杨红薇,唐家良..长期外源有机物料添加对川中丘陵区农田土壤养分和有机碳组分的影响[J].土壤,2023,60(5):991-1000,10.基金项目
国家自然科学基金项目(41991334,41721001)、浙江省科技项目(2022C02046)和现代农业产业技术体系岗位项目(CARS-01)资助Supported by the National Natural Science Foundation of China(Nos.41991334 and 41721001),the Science and Technology Program of Zhejiang Province,China(No.2022C02046),and the Modern Agricultural Industry Technology System of China(No.CARS-01) （41991334,41721001）
