江西农业学报2026，Vol.38Issue(8)：63-71,9.DOI:10.19386/j.cnki.jxnyxb.2026.08.009
养分专家系统在江西双季稻的应用效果验证
Application and Verification of Nutrient Expert System on Double-cropping Rice in Jiangxi Province
摘要
Abstract
To address the issues of unstable crop yields,low fertilizer utilization efficiency,and environmental pollution caused by blind fertilization in double-cropping rice cultivation,a nutrient expert system based on yield response and agronomic efficiency was employed to conduct a 3-year multi-site field verification experiment across five counties in Jiangxi Province from 2023 to 2025.Four treatments were arranged including local farmers'conventional fertilization practice(FP),soil testing-based formula fertilization(ST),rice nutrient expert system recommended fertilization(NE),and NE with 20%of chemical nitrogen replaced by organic fertilizer(NE20%M).The results showed that compared with FP,NE reduced N,P2O5 and K2O application rates by 15.0%,50.0%and 52.5%on average,raised corresponding fertilizer use efficiency by 15.4,10.8 and 49.5 percentage points,and increased grain yield by 3.2%and net profit by 3010 CNY per hectare.Compared with ST,NE decreased N,P2O5 and K2O inputs by 7.0%,37.8%and 44.7%,improved fertilizer use efficiency by 8.2,8.5 and 43.7 percentage points,slightly decreased grain yield by 2.3%,while lifting net profit by 374 CNY per hectare.Despite higher fertilizer costs under NE20%M,its net profit was 5946 CNY per hectare higher than that of sole NE.NE significantly elevated the contents of protein and free amino acids in rice grain,whereas its effects on amylose and reducing sugar were cultivar-dependent,with further improved grain quality under organic manure amendment.In conclusion,NE-based fertilization achieves fertilizer reduction,stable yield,improved grain quality and economic benefit,which is suitable for popularization in double-cropping rice regions of Jiangxi Province.关键词
养分专家系统/双季稻/养分利用率/经济效益/稻米品质Key words
Nutrient expert system/Double-cropping rice/Nutrient utilization efficiency/Economic benefit/Rice quality分类
农业科技引用本文复制引用
李秀秀,彭春瑞,胡娟,梁喜欢,陈金,陈先茂,谢江,关贤交,邱才飞,钱银飞..养分专家系统在江西双季稻的应用效果验证[J].江西农业学报,2026,38(8):63-71,9.基金项目
国家农业科技项目(20221805) （20221805）
国家重点研发计划项目(2024YFD1900105). （2024YFD1900105）
