A.山地土 B.黃土 C.白漿土 D.黑土
A.103 B.104 C.105 D.106
A.寶清農(nóng)場(chǎng) B.友誼農(nóng)場(chǎng) C.建三江農(nóng)場(chǎng) D.通北農(nóng)場(chǎng)