Key factors influencing wheat grain zinc and manganese concentration in areas with different soil available phosphorus

被引：4

作者：

Liu, Chenrui ^{[1
]}

Wang, Haolin ^{[1
]}

Ma, Yue ^{[1
]}

Guan, Peiyi ^{[1
]}

Sun, Qing ^{[1
]}

Wang, Ziming ^{[1
]}

Wang, Zilin ^{[1
]}

Wang, Zhaohui ^{[1
,2
]}

Shi, Mei ^{[1
,2
]}

机构：

[1] Northwest A&F Univ, Coll Nat Resources & Environm, Key Lab Plant Nutr & Agrienvironm Northwest China, Minist Agr, Yangling 712100, Shaanxi, Peoples R China

[2] Northwest A&F Univ, State Key Lab Crop Stress Resistance & High Effici, Yangling 712100, Shaanxi, Peoples R China

来源：

FIELD CROPS RESEARCH | 2024年 / 317卷

基金：

中国国家自然科学基金;

关键词：

Micro-element; Nutrient regulation; Cereal crops; Biofortification; Heavy metal; WINTER-WHEAT; HUMAN HEALTH; ACCUMULATION; NUTRITION; YIELD;

D O I：

10.1016/j.fcr.2024.109558

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Context or problem Zinc (Zn) deficiency and manganese (Mn) excess in wheat grains caused by high soil phosphorus (P) (>15 mg kg(-1)) in alkaline soil have been widely reported. How to identify the key factors influencing wheat grain Zn and Mn concentration in the areas with different soil available P (SAP) levels and meanwhile achieve high-Zn and low-Mn in grains needs to be resolved. Objectives In the present research, we collected soil and plant samples from 273 fields of alkaline soils (pH 7.5-9.4) in northern China for two years to analyze the comprehensive influences of soil P (4.6-58.1 mg kg(-1)) and other soil physico-chemical properties on the content of Zn and Mn in wheat grains. Results Results and the structural equation model demonstrated that low soil available phosphorus (SAP), high soil NO3--N (SNN), and DTPA-Zn were beneficial for improving the grain Zn concentration; low SAP, high SNN, and lower DTPA-Mn were beneficial for decreasing grain Mn concentration. Samples of wheat grain Zn concentration > 40 mg kg(-1) were found in the fields with SAP < 15 mg kg(-1). The increase of SNN could significantly increase grain Zn when SAP < 15 mg kg(-1) or > 30 mg kg(-1); when SAP at 15-30 mg kg(-1), only regulating SNN content did not increase grain Zn, grain Zn was significantly and positively correlated with soil DTPA-Zn. To decrease wheat grain Mn to lower than 48.7 mg kg(-1) (the recommended safe threshold), SAP should be lower than 30 mg kg(-1). Conclusion In conclusion, this research clarified the key soil factors influencing wheat grain Zn and Mn concentration in areas with different SAP levels, and by optimizing the application of N and P fertilizer and improving exogenous Zn application, high grain Zn while maintaining low Mn levels can be achieved with different SAP levels. Implications The findings of this study provide theoretical and technical support for guiding wheat production with high yield and high quality.

引用

页数：10

共 43 条

[1]

[Anonymous], 1996, Trace elements in human nutrition and health

[2]

Archer Eric, 2023, CRAN

[3] THE EFFECTS OF PHOSPHATE ON ZINC SORPTION BY A SOIL [J].