我国畜禽饲料资源中微量元素铜含量分布的调查

王丽赛,张丽阳,邵玉新,马雪莲,王良治,邢冠中,杨柳,李素芬,吕林,廖秀冬,罗绪刚

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

WANG LiSai,ZHANG LiYang,SHAO YuXin,MA XueLian,WANG LiangZhi,XING GuanZhong,YANG Liu,LI SuFen,LÜ Lin,LIAO XiuDong,LUO XuGang

表6 秸秆类饲料中铜含量分布（风干基础）

Table 6 Distribution of Cu contents in straw ingredients (air-dry basis)

样品名称 Name of samples 省(市、区)数 No. of provinces (municipalities, regions) 样品数 No. of samples 铜含量Cu contents (mg·kg-1) 平均值±标准差 Mean ± standard deviation 中位数 Median 众数 Mode 玉米秸秆 Corn straw 30 84 8.93±2.90b 8.37 9.55 小麦秸秆 Wheat straw 24 57 3.80±1.47c 3.63 5.48 稻秸 Rice straw 29 84 3.38±1.87c 2.98 4.32 甘薯藤 Sweet potato vine 12 21 13.89±3.79a 13.54 - P值 P-value ＜0.001 总平均值 Total average 7.50