我国畜禽饲料资源中微量元素砷含量分布的调查研究

张铁鹰,张丽阳,刘俊丽,廖朝勇,吕林,廖秀冬,罗绪刚

A Survey on Distribution of Arsenic Contents in Feedstuffs for Livestock and Poultry in China

ZHANG TieYing,ZHANG LiYang,LIU JunLi,LIAO ChaoYong,LÜ Lin,LIAO XiuDong,LUO XuGang

表6 牧草类饲料中砷含量分布（风干基础）

Table 6 Distribution of As contents in pasture feeds (air-dry basis)

样品名 Name of samples 省（市、区）数 No. of provinces (municipalities, regions) 样品数 No. of samples 超标率 Over-limit ratio (%) 砷含量 As contents (μg·kg-1) 羊草 Leymus chinensis 7 35 0 663.12±88.42A 黑麦草 Ryegrass 16 72 0 607.38±26.90A 苜蓿 Alfalfa 25 93 0 502.29±28.42B 青贮玉米 Corn silage 23 88 0 345.84±28.00C P值P value <0.0001 总体平均值Total average 500.3