扬州大学学报（农业与生命科学版）2025，Vol.46Issue(2)：126-135,10.DOI:10.16872/j.cnki.1671-4652.2025.02.016
钠基膨润土对沙地土壤物理性质及朝天椒生长的影响
Effect of sodium bentonite on the physical properties of sandy soil and growth of hot peppers
摘要
Abstract
Aiming at the problem of poor structural properties and low water holding capacity of sandy soil,this study was conducted to investigate the effect of sodium bentonite on soil properties,structure and growth of hot pepper in sandy soil,and to provide reference for improving the water-holding performance and production capacity of sandy soil.From August 2022 to March 2023,an indoor pot experiment was carried out.The experiment was set up with six treatments of the bentonite application rate:0(CK)5(A1);15(A2);25(A3);35(A4);45(A5)t·hm-2.The effects of different ap-plication rates of sodium bentonite on soil physical properties and water holding capacity and growth of hot pepper were investigated.The results showed that bentonite can improve soil properties,adjust soil structure,increase soil water-holding capacity,and at the same time promote the growth of hot pepper.Compared with the control,the application of bentonite significantly reduced the soil bulk weight and the R value of the three phases,and significantly increased the soil water holding capacity,hardness,total porosity,and the content of WR＞0.25mm.The average daily water consumption was reduced by 4.3％to 19.1％,and the total amount of irrigation water was saved by 1.5％to 16.4％.Compared with the con-trol,the number of fruits per plant and fresh weight of hot pepper were significantly increased by 233.3％to 2 566.7％and 16.7％to 72.2％,respectively.In summary,the application of sodium bentonite can improve soil properties,reduce dai-ly water consumption and save irrigation water,while promoting the growth and development of hot pepper.Combining the relevant indicators,the study concluded that 35 t·hm-2 of bentonite had the best effect on sandy soil improvement and Hot pepper growth.关键词
土壤改良/钠基膨润土/朝天椒/生长与产量Key words
soil improvement/Sodium-bentonite/hot pepper/growth and yield分类
农业科技引用本文复制引用
王本龙,周春生,李利荣,娄雨欣,刘学瑶,刘萍..钠基膨润土对沙地土壤物理性质及朝天椒生长的影响[J].扬州大学学报（农业与生命科学版）,2025,46(2):126-135,10.基金项目
国家自然科学基金联合基金资助项目(U23A2014) （U23A2014）
内蒙古自治区自然科学基金资助项目(2021MS05017、2020MS05018、2020BS03001、2022MS07008) （2021MS05017、2020MS05018、2020BS03001、2022MS07008）
内蒙古自治区直属高校基本科研业务费项目(NCYWZ22009、NCYWS23033) （NCYWZ22009、NCYWS23033）
内蒙古自治区农牧厅科研项目(202076) （202076）
研究生课程思政示范建设项目(2022YJSKCSZ03) （2022YJSKCSZ03）
