华北农学报2024，Vol.39Issue(1)：120-126,7.DOI:10.7668/hbnxb.20193899
内蒙古平原灌区土壤固碳与养分吸附特征及秸秆还田调控
Characteristics of Soil Carbon Sequestration and Nutrient Adsorption and Regulation of Straw Returning in Inner Mongolia Plain Irrigation Area
摘要
Abstract
In order to provide theoretical basis for straw fertilizing high-yield field and improving saline-alkali field in the process of continuous high yield and stable yield of spring corn in Inner Mongolia plain irrigation area.This study set up a positioning test of corn straw returning to the field for 1 to 4 years(HT1-HT4),taking the straw not returning to the field as the control(CK).Soil organic carbon content,total nitrogen content,available nitrogen content,available phosphorus content,cation exchange capacity,pH value and acid-base buffer curve were measured before spring sowing and during harvest.The results showed that,the relative change rates of soil organic carbon content,total nitrogen content,available nitrogen content,available phosphorus content and cation exchange capacity were 1.34％-3.62％,0.20％-1.51％,-0.11％-0.78％,0.89％-6.36％and 0.09％-0.41％during harvest period of HT1-HT4 compared with that before spring sowing.The relative change rates of soil organic carbon content,total nitrogen content,available nitrogen content,available phosphorus content and cation exchange capacity were 1.57％,-0.02％,-0.45％,-0.15％and-0.05％in CK harvest period compared with that before spring sowing.Soil pH value of HT2,HT3 and HT4 was significantly lower than that of CK.The buffer capacity of soil to alkali was HT4＞HT3＞HT2＞HT1＞CK.In summary,with the increase of straw returning years,soil carbon sequestration capacity,fertilizer retention capacity and buffering performance in-crease,and the ability to effectively resist drastic changes in soil pH value caused by fertilizer application and other factors was enhanced,soil quality was significantly improved by straw returning to field for fertilizer cultivation and soil improvement measures.关键词
秸秆还田/土壤有机碳/土壤养分吸附/土壤阳离子交换量/土壤酸碱缓冲曲线/盐碱田Key words
Straw returning/Soil organic carbon/Soil nutrient adsorption/Soil cation exchange capacity/Soil acid-base buffer curve/Saline-alkali field分类
农业科技引用本文复制引用
于博,刘雅梦,杨哲,王佳乐,王钰艳,郭艳,马扬,任琴,穆俊祥..内蒙古平原灌区土壤固碳与养分吸附特征及秸秆还田调控[J].华北农学报,2024,39(1):120-126,7.基金项目
乌兰察布市基础研究项目(2021JC201) （2021JC201）
内蒙古自治区自然科学基金项目(2021BS03022) （2021BS03022）
集宁师范学院博士创新科研基金项目(jsbsjj2305) （jsbsjj2305）
集宁师范学院博士科研启动基金项目(jsbsjj1710) （jsbsjj1710）
大学生创新创业训练计划项目(202211427002 （）
S202211427023 （）
X20231142070034 （）
X20231142070044) （）
内蒙古自治区哲学社会学重点研究基地项目 （）
集宁师范学院生物技术研发与应用研究所项目 （）
