中国农业大学学报2024，Vol.29Issue(8)：86-94,9.DOI:10.11841/j.issn.1007-4333.2024.08.07
不同浓度沼液及施用方式对小白菜生长效果的影响
Effects of different concentrations and application methods of liquid digestate on the growth of Chinese cabbage
摘要
Abstract
Aiming at the difficulty in liquid digestate treatment in current biogas plants and the problem of excessive application of chemical fertilizers in modern agriculture,this study pretreated liquid digestate with different dilution proportions by microbial inoculants to obtain liquid fertilizers with different concentrations of liquid digestate explored.The effects of different concentrations of liquid digestate and its application methods(leaf spraying and watering)on the growth indexes,photosynthetic indexes and quality indexes of potted cabbage were explored.The results showed that:Low concentration of liquid digestate promoted the growth and development of Chinese cabbage by foliar spraying,and applying liquid digestate with a dilution of 15 to 20 times was the best.High concentration liquid digestate significantly improved the growth and quality indexes of Chinese cabbage,and the effect was better than that of chemical fertilizer treatment group.The optimal application plan was diluted by 1.5 times.Under the same nitrogen level,the effect of high concentration liquid digestate for irrigation on the growth and quality of Chinese cabbage was better than that of low concentration liquid digestate for foliar spraying.High concentration liquid digestate had the potential to replace chemical fertilizer,while low concentration liquid digestate could be used as a topdressing method to supplement nutrients.In conclusion,using liquid digestate pretreated by microbial agents as liquid fertilizer to cultivate Chinese cabbage can not only significantly improve its growth quality,but also reduce the application of chemical fertilizer.It has important practical significance for increasing crop income and protecting environment.关键词
沼液/施用方式/小白菜/生长指标/光合指标/品质指标Key words
liquid digestate/applying method/Chinese cabbage/growth index/photosynthetic index/quality index分类
农业科技引用本文复制引用
娄雨,李艳,姜灵伟,李明新,王琦璋,马继涛,林聪,段娜..不同浓度沼液及施用方式对小白菜生长效果的影响[J].中国农业大学学报,2024,29(8):86-94,9.基金项目
国家自然科学基金国际(地区)合作与交流项目(52261145701) （地区）
国家自然科学基金项目(51861125103) （51861125103）
