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5 秸秆类饲料中砷含量分布（风干基础）

Table 5 Distribution of As contents in straw 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) 玉米秸 Corn straw 30 83 0 154.70±22.08A 甘薯藤 Sweet potato vine 12 21 0 559.34±24.84B 稻秸 Rice straw 28 84 27.4 3025.2±252.62C 小麦秸 Wheat straw 24 57 0 435.80±23.53D P值P value <0.0001 总体平均值Total average 1239.0