湖北农业科学2026，Vol.65Issue(2)：36-41,6.DOI:10.14088/j.cnki.issn0439-8114.2026.02.006
添加生物炭和聚丙烯酰胺对红壤持水特性和宽叶雀稗抗旱特性的影响
Effects of biochar and polyacrylamide addition on the water retention characteristics of red soil and the drought resistance characteristics of Paspalum wettsteinii
摘要
Abstract
In order to construct a set of technical system that could effectively improve the structure of red soil and improve the effi-ciency of vegetation restoration,the effects of biochar(2.0％)and polyacrylamide(PAM,0.5％)addition on soil structure,physiolo-gy and growth of Paspalum wettsteinii were studied in red soil of southern China.The results showed that,compared with the control without soil conditioner(CK),the saturated hydraulic conductivity of soil treated with PAM increased by 18.4％,while that of the mixed treatment of PAM and biochar decreased by 42.4％.Single application of PAM or biochar could not increase the capillary water retention capacity and field water retention capacity of red soil.The mixed application of PAM and biochar significantly increased the capillary water retention capacity,field water retention capacity and capillary porosity of red soil.Under drought conditions,compared with CK,the mixed application of PAM and biochar significantly reduced the malondialdehyde content in the leaves of Paspalum wett-steinii,and significantly increased the water content in the leaves and the plant height of Paspalum wettsteinii.In summary,the addi-tion of 2.0％biochar and 0.5％PAM showed the best effect in improving the structure of red soil and promoting the growth of Paspalum wettsteinii.关键词
红壤/干旱胁迫/土壤改良剂/生物炭/聚丙烯酰胺/持水特性/生理特性/宽叶雀稗(Paspalum wettsteinii Hackel)/抗旱特性Key words
red soil/drought stress/soil conditioner/biochar/polyacrylamide/water retention characteristics/physiological charac-teristics/Paspalum wettsteinii Hackel/drought resistance characteristics分类
农业科技引用本文复制引用
姚为方,戴皓升,华雪莹,徐鹏,余靖..添加生物炭和聚丙烯酰胺对红壤持水特性和宽叶雀稗抗旱特性的影响[J].湖北农业科学,2026,65(2):36-41,6.基金项目
国网安徽省电力有限公司科技项目(B3120524000X) （B3120524000X）
