【三江平原低产土壤与改良】赵德林黑龙江科学技术.pdf

【三江平原低产土壤与改良】赵德林黑龙江科学技术.pdf

三江平原低产土壤与改良 赵德林著三江平 原农田景观 摄于黑 龙江省宝清 县万金山乡 Viewofbog-landinShanjiangPlain.Dongsheng Countryside,Baoqing County,Viewof farmlandinShanjiangPlain.Wanjinshan Countryside,Baoqing County,Heilongjiang Province.Heilongjiang Province.在白浆土上应 用的浅翻深松犁 摄于黑龙江省 宝清县八五三农场 ShallowPloughand SubsoilPloughusinginplanosolState Farm.Baoqing County,Heilongjiang Pro- Effectonsubdrainageofmoleploughunderplowpanin Changan Countryside,Fujin County,Heilongjiang Pro Claymeadowsoils vince.黑朽土上犁底 鼠洞的排涝效果 摄于黑龙江省 富锦县长安乡 vince.