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中国生猪耗粮系数时空演变特征
刘晓宇
1
,
2
(
), 辛良杰
1
(
)
Spatial and temporal variations of grain consumption coefficient of pig in China
LIU Xiao-yu
1
,
2
(
), XIN Liang-jie
1
(
)
图2.
不同饲养规模生猪精饲料费用占比
Fig. 2.
Percentages of concentrate feed costs of different scales