土壤2023，Vol.55Issue(6)：1230-1236,7.DOI:10.13758/j.cnki.tr.2023.06.009
长期连续施用生物质炭对土壤肥力、小麦产量和微生物群落结构的影响
Effects of Long-Term Successive Biochar Amendment on Soil Fertility,Wheat Production and Microbial Community Structure
摘要
Abstract
A field experiment started in 2010 was conducted to examine the effects of successive maize straw and its biochar amendment on soil fertility,wheat production and microbial community structure.There were 5 treatments:CK(no straw and no biochar),6 t/(hm2·a)maize straw(Straw),2.4 t/(hm2·a)biochar(BC1),6 t/(hm2·a)biochar(BC3),and 12 t/(hm2·a)biochar(BC5).The results showed that BC5 significantly increased wheat yields in 2021,compared with CK,wheat yields with biochars averagely increased by 15%.After 11 years of continuous addition,soil bulk density decreased from 1.06 g/cm3(CK)to 0.73 g/cm3(BC5),and total carbon increased from 14.9 g/kg(CK)to 83.8 g/kg(BC5).Soil available nitrogen,available phosphorus and available potassium increased with the application rates,following the order of BC5>BC3>BC1>Straw≥CK.No significant change was found in the diversity of bacterial communities under different treatments,while BC5 slightly increased fungal diversity.PICRUSt2 results showed that biochar addition significantly increased the abundance of C-fixation related functional genes,while decreased the abundance of C-degradation related functional genes.关键词
长期田间试验/生物质炭/土壤肥力/小麦生产/微生物群落结构Key words
Long-term field trials/Biochar/Soil fertility/Wheat production/Microbial community structure分类
农业科技引用本文复制引用
陈哲,谢祖彬,靳鹏辉,胡天龙,王慧,周蓉,张静如,刘琦,张燕辉,蔺兴武..长期连续施用生物质炭对土壤肥力、小麦产量和微生物群落结构的影响[J].土壤,2023,55(6):1230-1236,7.基金项目
国家自然科学基金项目(42177333)和江苏省农业科技自主创新资金项目(CX(20)2003)资助. （42177333）
