摘要
【目的】为了明确辣椒秸秆生物炭对黄壤的改良效果。【方法】以小白菜和黄壤作为研究对象,采用盆栽试验,通过测定土壤pH值、有机质、有效氮磷钾含量、小白菜生物量、可溶性糖含量、Vc含量、硝酸盐含量和氮磷钾含量等指标,探究添加不同比例的辣椒秸秆生物炭对黄壤化学特性和小白菜生长的影响。【结果】与对照相比,添加0.5%、2.5%以及5%辣椒秸秆生物炭处理组土壤pH值分别增加了0.17、0.77和0.62个单位,有机质含量分别增加了8.43%、183.52%和378.35%,有效磷及有效钾含量也呈增加趋势。在辣椒秸秆生物炭3个用量条件下(0.5%、2.5%和5%),小白菜地上部鲜重较对照分别增加了127.20%、290.38%和286.82%。此外,添加辣椒秸秆生物炭后,小白菜地上部磷钾含量分别增加了51.02%~216.33%和13.36%~38.58%,可溶性糖含量分别增加了2.72~3.69个百分点,Vc含量较对照显著提高了58.60%~131.72%,而硝酸盐含量降低了7.36%~18.02%。【结果】辣椒秸秆生物炭的添加改善了黄壤的化学特性,促进了小白菜对养分的吸收,提升了小白菜的生物量和品质,在本试验范围内以2.5%添加比例效果最优。
【Objective】This study aims to clarify the improvement effect of pepper straw biochar on yellow soil.【Method】With Chinese cabbage and yellow soil as research objects,this study adopted pot experiment to explore the effects of adding different proportions of biochar from chili straw on the chemical characteristics of yellow soil and the growth of Chinese cabbage by measuring soil pH value,organic matter,available nitrogen,phosphorus and potassium content,aboveground biomass,Vc content and nitrogen,phosphorus and potassium content. 【Result】Compared with the control,the soil p H value of the treatments with 0.5%,2.5% and 5% chili straw biochar increased by 0.17,0.77 and 0.62 units respectively,the organic matter content increased by 8.43%,183.52% and 378.35% respectively,and the available phosphorus and potassium content also increased. The fresh weight of Chinese cabbage increased by 127.20%,290.38% and 286.82%,respectively. In addition,the content of phosphorus and potassium in the shoot of Chinese cabbage increased by 51.02%-216.33% and 13.36%-38.58%,the soluble sugar content increased by 2.72-3.69 percentage points,Vc content in the shoot of Chinese cabbage increased by 58.60%-131.72%,while nitrate content decreased by 7.36%-18.02% compared with the control,respectively.【Conclusion】The addition of chili straw biochar improved the chemical characteristics of yellow soil,promoted the absorption of nutrients by Chinese cabbage,and improved the biomass and quality of Chinese cabbage. The best effect was achieved with the addition ratio of 2.5% in the range of this experiment.
作者
罗洋
张桂玲
王芳
向仰州
任军
LUO Yang;ZHANG Guiling;WANG Fang;XIANG Yangzhou;REN Jun(School of Geography and Resources,Guizhou Education University,Guiyang 550018,China;School of Chemistry and Materials Science,Guizhou Education University,Guiyang 550018,China;College of Horticulture and Landscape,Tianjin Agricultural University,Tianjin 300384,China)
出处
《四川农业大学学报》
CSCD
北大核心
2022年第6期847-852,共6页
Journal of Sichuan Agricultural University
基金
国家自然科学基金项目(41563007)
贵州省科学技术基金资助项目(黔科合基础[2019]1247号)
贵州师范学院2020年度校级科学研究基金博士项目(2020BS002)。
关键词
辣椒秸秆
小白菜
黄壤
生物炭
chili straw
Chinese cabbage
yellow soil
biochar
