山西农业科学2025，Vol.53Issue(4)：64-72,9.DOI:10.26942/j.cnki.issn.1002-2481.2025.04.08
光碳核肥对土壤养分及青稞硒吸收转运的影响
Effects of Photocarbon Core Fertilizer on Soil Nutrients and Selenium Absorption and Transport of Highland Barley
摘要
Abstract
In order to solve the adverse effects of application of traditional chemical fertilizers on the environment and the low efficiency of selenium absorption in crops,in this study,6 application rates of photocarbon core fertilizer(0(CK),600(G1),750(G2),900(G3),1 050(G4),and 1 200(G5)kg/ha)were set in the experiment,the ability of a new organic fertilizer,photocarbon core fertilizer,to improve the nutrients of naturally selenium-rich soil and enhance the absorption and transport of selenium in highland barley was evaluated without the addition of exogenous selenium,so as to provide a theoretical basis for the efficient use of natural selenium-rich resources to produce green and safe selenium-rich agricultural products.The results showed that application of appropriate photocarbon core fertilizer could increase the contents of soil organic matter,total nitrogen,total phosphorus,total potassium,and available nutrients,the soil integrated fertility index(IFI)under G3 treatment reached the highest value of 1.88,and there was no significant difference in soil pH among all treatments.Application of photocarbon core fertilizer could significantly increase the contents of total selenium and available selenium in soil,and promote the activation of selenium in soil.Organic matter and alkali-hydrolyzed nitrogen were extremely significantly positively correlated with available selenium content.Application of photocarbon core fertilizer could increase the selenium content of highland barley organs,the content was in the order of root>leaf>stem>grain,the proportion of organic selenium in grain increased to 67.9%.The bioconcentration factor(BCF)value of selenium in all organs was in the order of root>leaf>stem>grain,and the leaf/stem value of TF was greater than 1,indicating that selenium was more easily transferred from stem to leaf,but there was no significant difference among the treatments,revealing that photocarbon core fertilizer had no significant effect on the transfer of selenium from leaf to grain.In conclusion,the best effect was achieved when the basal application rate of photocarbon core fertilizer was 900 kg/ha(G3),which could be used as a cultivation management measure in naturally selenium-rich soil.关键词
光碳核肥/综合肥力指数/有机硒占比/青稞/富集系数Key words
photocarbon core fertilizer/integrated fertility index/proportion of organic selenium/highland barley/concen-tration factor分类
农业科技引用本文复制引用
苏宁,谢惠春,蒋礼玲,乔枫,郑万财,李娟,王蓉,耿贵工..光碳核肥对土壤养分及青稞硒吸收转运的影响[J].山西农业科学,2025,53(4):64-72,9.基金项目
青海"昆仑英才·高端创新创业人才"计划特色人才项目(QHCH-2022-027) （QHCH-2022-027）
青海省中央引导地方科技发展资金(2024ZY020) （2024ZY020）
