吉林农业大学学报2024，Vol.46Issue(5)：860-868,9.DOI:10.13327/j.jjlau.2021.1781
水热炭源改良剂对盐碱地牧草生长及根际土壤酶活性的影响
Effects of Hydrothermal Carbon Amendment on Forage Growth and Rhizosphere Soil Enzyme Activities in Saline-alkali Soil
摘要
Abstract
A hydrothermal carbon source amendment aimed to plant grass to improve soda saline-alkali soil was developed in this study.Its effects on the growth of Medicago sativa and Leymus chi-nensis and the enzyme activity of rhizosphere soil were studied by biological pot experiment.The re-sults showed that the emergence rate of the two forages increased first and then decreased with the in-crease of amendment applying amount,and reached the highest at the application rate of 20 g/kg.Compared to the control treatment,the emergence rate of Medicago sativa increased by 66.34%and 24.53%,and Leymus chinensis increased by 39.35%and 17.39%,respectively.With the increase of the application amount,the dry weight of aboveground and underground parts of the two crops also in-creased first and then decreased.At 20 g/kg,the dry weight of aboveground parts of the two crops of Medicago sativa increased by 178.41%and 37.03%,and the dry weight of root increased by 249.34%and 56.74%,respectively.The aboveground dry weight of Leymus chinensis increased by 70.07%and 29.35%,and the dry weight of root increased by 104.58%and 23.36%,respectively.Meanwhile,the contents of catalase,alkaline phosphatase,urease and protease in rhizosphere soil also reached the highest value,which were increased by 5.12%,48.49%,31.64%and 19.43%for Medicago sativa,and 4.16%,53.80%,23.34%and 11.03%for Leymus chinensis,respectively.In a word,planting grass is one of the reasonable methods to improve soda saline-alkali soil.This soil amendment can promote the growth of grass roots and increase their biomass at the application amount of 20 g/kg.关键词
苏打盐碱土/水热炭/改良剂/牧草/酶活性Key words
soda saline-alkali soil/hydrochar/amendment/forage/enzyme activity分类
农业科技引用本文复制引用
赵晟晨,杨靖民,周清华,张义,刘悦,杨玉玲,刘金华,常海波..水热炭源改良剂对盐碱地牧草生长及根际土壤酶活性的影响[J].吉林农业大学学报,2024,46(5):860-868,9.基金项目
吉林省科技发展计划项目(20200201011JC),吉林省教育厅科学研究项目(JJKH20210340KJ) （20200201011JC）
