华中农业大学学报2025，Vol.44Issue(4)：79-87,9.DOI:10.13300/j.cnki.hnlkxb.2025.04.008
石膏配施有机物料对碱化盐土及玉米生长的影响
Effects of gypsum combined with organic materials on alkalized solonchaks and growth of maize
摘要
Abstract
The techniques of saving water,reducing alkalinity and enhancing soil fertility in heavily sa-line-alkaline areas in Ningxia were developed to solve practical problems including equal emphasis on saline and alkali in soil,shortage of freshwater resources,and difficulties in the growth of crops in arid areas.Four organic materials including organic fertilizer,maize straw,furfural residue,and biochar were selected for combination with desulfurization gypsum.The treatment without any improved materials was used as a con-trol.A series of bucket cultivation experiments were conducted in Huinong District,Ningxia to study the ef-fects of gypsum irrigation with slightly salty water droplets combined with organic materials on the proper-ties of alkaline and saline in soil and the growth of maize.The results showed that the application of gypsum increased the content of exchangeable calcium in the soil,significantly decreased the conductivity and pH in soil,with a decrease in conductivity of 28.3%-57.9%.The content of total nitrogen,alkali hydrolyzed nitro-gen,available potassium,and organic carbon in the soil was significantly decreased,but the conductivity in soil increased and the content of available phosphorus decreased in the following spring.The combination of gypsum and organic fertilizer with 0.56%furfural residue or biochar further decreased the electrical conduc-tivity in soil and increased the content of exchangeable calcium,maintaining the content of total nitrogen and available potassium in soil,significantly increasing the content of organic carbon,alkali hydrolyzed nitro-gen,and available phosphorus in soil.The addition of 0.56%furfural residue combined with gypsum and or-ganic fertilizer significantly mitigated the salinity and alkalinity in soil in the following year,while significant-ly increasing the content of organic carbon,total nitrogen,available phosphorus,and the cation exchange ca-pacity in soil to significantly increase the plant height,stem diameter of maize,ultimately increasing the bio-mass of maize.It is indicated that the economic benefit of furfural residue is better than that of biochar,there-fore,the combination of desulfurization gypsum combined with organic fertilizer and furfural residue is suit-able for improving the alkalized solonchaks soil.关键词
碱化盐土/有机肥/糠醛渣/生物炭/脱硫石膏/玉米Key words
alkalized solonchak/organic fertilizer/furfural residue/biochar/desulfurization gypsum/maize分类
农业科技引用本文复制引用
樊丽琴,沈婧丽,王旭,吴霞,陈文茜..石膏配施有机物料对碱化盐土及玉米生长的影响[J].华中农业大学学报,2025,44(4):79-87,9.基金项目
宁夏农业高质量发展和生态保护科技创新示范项目(NGSB-2021-11-03) （NGSB-2021-11-03）
宁夏回族自治区重点研发项目(2023BCF01050) （2023BCF01050）
农业基础性长期性科技工作观测监测(NAES091AE18) （NAES091AE18）
