Study on selenium fertilizer mitigation of nutritional inhibition in Medicago sativa induced by high-concentration polyethylene nanoplastics
ZHENG Xinmiao
ZHU Wenyan
GUO Zirui
LI Jie
FAN Wenna
SUN Ping
Abstract：The study aimed to investigate the optimal concentration of selenium fertilizer for alleviating polyethylene nanoplastics(PE-NPs)induced nutritional inhibition in alfalfa(Medicago sativa).Alfalfa seeds were randomly divided into six groups,with three replicates per group and 15 plants per replicate.The control group(group CK)did not add PE-NPs.The experimental groups added 1％PE-NPs to the soil and applied selenium fertilizers of 0(group S0),0.4(group S04),0.8(group S0.8),1.2(group S12),and 1.6 mg/kg(group S16),respectively.The results showed that compared with the group CK,the aboveground biomass,net photosynthetic rate,the content of chlorophyll a,chlorophyll b,dry matter,crude ash,crude protein,and crude fat in group S0 were significantly reduced(P＜0.05).Compared with the group S0,the net photosynthetic rate in group S0.4 was significantly increased(P＜0.05).The group S0.8 achieved the highest membership function value,indicating optimal comprehensive performance.The study demonstrates that soil application of 0.8 mg/kg selenium fertilizers can significantly alleviate the physiological inhibition caused by PE-NPs,and improve the nutritional quality of alfalfa.
Keywords：polyethylene nanoplasticsMedicago sativaseleniumnutritional composition
Publication Date：2025-08-28
Online Publishing Date：2025-10-28(First online date of this platform, not the publication date of the document)
Pages：6( 104-109 )