植物营养与肥料学报2026，Vol.32Issue(1)：37-49,13.DOI:10.11674/zwyf.2025105
冬种紫云英配合减施40%氮肥实现我国南方稻区水稻稳产和糙米营养品质提升
Milk vetch combined with 40%nitrogen fertilizer reduction maintains rice yield and improves nutritional quality of brow rice in south China
摘要
Abstract
[Objectives]The application of milk vetch(Astragalus sinicus L.)combined with reduced nitrogen fertilizer is an effective measure to ensure stable and increased yield of rice.This study investigated the effects of milk vetch combined with a 40%reduction of chemical N fertilizer on grain yield,brown rice amino acid content and composition across different rice-producing regions.[Methods]Field experiments were established in Anhui,Henan,Jiangxi and Hunan provinces;those in Henan and Hunan began in 2008,whereas Anhui and Jiangxi started in 2017 and 2016,respectively.Cropping systems were milk vetch-single rice or milk vetch-early rice-late rice.All sites included five treatments:winter fallow without fertilization(CK);winter fallow with 100%chemical N(F100);milk vetch without fertilization(MV);milk vetch combined with 60%chemical N(MF60);milk vetch combined with 100%chemical N(MF100).Grain yield,protein concentration,total amino acid content,essential amino acidc ontent,and non-essential amino acid content in brown rice were determined in 2020.[Results]There was no significant difference in rice yield and grain protein content among MF60,MF100 and F100.Compared with F100,the total amino acid content of brown rice under MF100,MF60 and MV treatments increased by 32.8%,62.6%and 35.7%,respectively,and the essential amino acid content of MF60 treatment increased by 30.7%.Among the essential amino acids,the content of isoleucine and phenylalanine in MF60 treatment increased by 290.6%and 37.1%respectively compared with F100 treatment,and the content of phenylalanine in MV treatment increased by 45.1%compared with F100 treatment.Among the non-essential amino acids,the contents of proline,cysteine and tyrosine in MF60 treatment increased by 309.3%,80.1%and 279.5%respectively compared with F100 treatment,and the contents of histidine,proline and cysteine in MV treatment increased significantly by 139.7%,180.5%and 103.1%compared with F100 treatment.Among the sampling sites,the green manure treatment in Anhui Province had the most significant increase in the amino acid content of brown rice.The total amino acid content and the essential amino acid content of brown rice under MF60 increased by 190.8%and 108.5%,respectively,compared with F100 treatment.Correlation analysis showed significant positive relationships between grain yield and protein content,and between total amino acid content and the essential amino acid content in brown rice.[Conclusions]Milk vetch-rice rotation combined with 40%reduction in nitrogen fertilizer can maintain rice yield and improve the nutritional quality of brown rice,especially increase the amino acid content,demonstrating an important measure to improve the quality and efficiency of rice in southern China.关键词
紫云英-水稻轮作/氮肥减施/稻谷产量/籽粒蛋白质/糙米氨基酸组分Key words
milk vetch-rice rotation/nitrogen fertilizer reduction/rice yield/grain protein/amino acid composition of brown rice引用本文复制引用
葛环宇,张愉乐,常单娜,武际,吕玉虎,徐昌旭,聂军,高嵩涓,曹卫东..冬种紫云英配合减施40%氮肥实现我国南方稻区水稻稳产和糙米营养品质提升[J].植物营养与肥料学报,2026,32(1):37-49,13.基金项目
国家重点研发计划项目(2021YFD1700200) （2021YFD1700200）
国家绿肥产业技术体系(CARS-22) （CARS-22）
国家自然科学基金项目(32472842). （32472842）
