排灌机械工程学报2026，Vol.44Issue(2)：182-189,8.DOI:10.3969/j.issn.1674-8530.24.0200
膜炭共作对控灌稻田土壤水热和无机氮分布及产量的影响
Effects of mulching and biochar co-cultivation on soil hydrothermal and inorganic nitrogen distribution and yield in controlled-irrigation paddy fields
摘要
Abstract
In order to explore the impact mechanisms of mulching and biochar on soil hydrothermal and inorganic distribution,as well as yield in controlled irrigation paddy fields,four treatments were set up:no mulching and no biochar application(CK),film mulching(CF),application of 2.5 t/hm2 biochar(CB),and combined film mulching with application of 2.5 t/hm2 biochar(CBF).The spatio-temporal variation trends of soil hydrothermal,inorganic nitrogen,crop yield,and their components in different soil layers of paddy fields under mulching and biochar conditions were analyzed.The correla-tion characteristics of soil hydrothermal,inorganic nitrogen,and yield under the combined application of mulching and biochar co-cultivation conditions were quantified.The results demonstrate that,com-pared with the control(CK),different mulching and biochar treatments significantly enhance soil moisture content,ammonium nitrogen,and nitrate nitrogen levels.The CBF treatment shows the most pronounced improvement,with increases of 7.2%-22.3%in soil moisture,8.9%-27.8%in ammonium nitrogen,and 11.0%-22.1%in nitrate nitrogen.The combined treatment of mulching and biochar application(CF and CBF)can increase soil temperature,while the single application of 2.5 t/hm2 biochar has no significant effect on increasing soil temperature.Rice yield significantly correlates positively with soil water content,soil ammonium nitrogen,and nitrate nitrogen content(P＜0.05).The CBF treatment achieves maximum economic benefits with 26.8%yield increase and 15.1%net in-come enhancement.Comprehensive evaluation reveals that the combined film mulching and biochar ap-plication represents the optimal management practice for irrigation paddy fields in this study.This re-search provides theoretical references for establishing appropriate film mulching and biochar application strategies in Heilongjiang paddy fields.关键词
土壤水热/土壤无机氮/水稻产量/地膜覆盖/生物炭/控制灌溉Key words
soil hydrothermal/soil inorganic nitrogen/rice yield/film mulching/biochar/controlled irrigation分类
农业科技引用本文复制引用
王昊,刘继龙,曹晓强,李济桢,孙伟丽,王胤淇,何语凝..膜炭共作对控灌稻田土壤水热和无机氮分布及产量的影响[J].排灌机械工程学报,2026,44(2):182-189,8.基金项目
国家自然科学基金资助项目(52479036) （52479036）
农业农村部政府购买服务项目(125A0605) （125A0605）
