中国农业科学2025，Vol.58Issue(5)：956-974,19.DOI:10.3864/j.issn.0578-1752.2025.05.011
我国主要麦区农户小麦籽粒硫的含量、分布及影响因素
Sulfur Concentration and Distribution in Wheat Grain Sampled from Farmers'Fields in Main Wheat Production Regions of China and Its Affecting Factors
摘要
Abstract
[Objective]It was of great significance to clarify the grain sulfur(S)concentration,its distribution in flour and bran,and relevant affecting agronomy,nutrition,soil physicochemical and fertilization factors for regulating grain S nutrition,and optimizing S management regionally over major wheat production regions of China.[Method]During the two wheat growing seasons from 2021 to 2023,445 wheat plants and soil samples were collected from typical farmers'fields in 18 major wheat production provinces(municipalities or districts)in China,to analyze the relationship of grain,flour and bran S concentrations with yield,biomass,harvest index and yield components,S accumulation and distribution in shoot,as well as soil physicochemical properties and fertilization.[Result]Grain S concentrations of farmers in main wheat production regions of China ranged from 1.00 to 2.31 g·kg-1,with an average of 1.59 g·kg-1.The flour and bran S concentration were 0.55-2.05 and 0.54-4.26 g·kg-1,respectively,with an average of 1.33 and 2.03 g·kg-1,respectively.About half of the samples were at low grain S concentration level.Sulfur concentration in wheat grain and flour from wheat-maize and dryland wheat production regions were higher than that from spring wheat and rice-wheat production regions.The bran S concentration was higher than that of flour,both increased with the grain S concentration.The increase of wheat yield and thousand kernel weight was beneficial to the improvement of grain S concentration.For each 1.0 t·hm-2 increase of yield,the grain S concentration increased by 0.01 g·kg-1;and for each 1.0 g increase of the thousand kernel weight,the grain S concentration increased by 0.003 g·kg-1.A positive correlation was found between the grain and flour S concentration and S accumulation in all wheat organs.With the increase of grain S concentration,its distribution ability to flour decreased while the distribution to bran developed.However,in the dryland wheat production region,the increase of grain S accumulation was lower than that of yield,thus the grain S concentration decreased with the yield increase.Soil pH,nitrate nitrogen(N)and phosphorus fertilizer application all showed significant effects on grain S concentration.Grain S concentration increased by 0.02,0.0004 and 0.0004 g·kg-1,respectively,with each unit increase of these three parameters.The main soil factors affecting flour S concentration were pH,ammonium N,and available iron(Fe).For each 1.0 unit increase of pH,the flour S concentration increased by 0.04 g·kg-1;while for each 1.0 mg·kg-1 increase of soil ammonium N and available Fe,the flour S concentration decreased by 0.0003 and 0.0005 g·kg-1,respectively.[Conclusion]In brief,the grain S concentrations were of great increase potentials for farmers'wheat in main wheat production regions of China.It was obviously a vital approach to regulate grain S concentration and its distribution in flour and bran,by optimizing wheat grain yield components,adjusting soil pH,coordinating the soil nitrate N,ammonium N and available Fe supply,and applying nitrogen and phosphorus fertilizers rationally together with increased S fertilizer application,for improving soil S availability and balancing wheat S uptake and yield formation to harvest high yield with optimized grain S nutrition.关键词
小麦/籽粒/面粉/麸皮/硫/土壤pH/铵态氮/硝态氮/农户麦田Key words
wheat/grain/flour/bran/sulfur/soil pH/soil ammonium N/soil nitrate N/farmers'field引用本文复制引用
佘文婷,孙蕊卿,党海燕,李文虎,张丰,田怡,徐隽峰,丁玉兰,王朝辉..我国主要麦区农户小麦籽粒硫的含量、分布及影响因素[J].中国农业科学,2025,58(5):956-974,19.基金项目
国家现代农业产业技术体系建设专项(CARS-3)、国家重点研发计划(2021YED1900700,2018YFD0200400) （CARS-3）
