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si chuan zi gong shi nong yong hua fei tou ru dui liang shi cheng ben shou yi de ying xiang
Author(s): 
Pages: 7-8+12
Year: Issue:  9
Journal: China Price

Keyword:  成本收益农用化肥粮食生产化肥价格自贡市粮食收益化肥投入粮食产量粮食价格价格上涨;
Abstract: 四川自贡市农用化肥投入对粮食成本收益的影响廖良成,徐仁远粮食生产的发展,与化肥、农药、农膜、杂交良种等农业生产资料的使用和推广密切相关,在诸多生产要素中,化肥特别是氮肥的投人又占有十分显著的地位。近些年来,特别是随着化肥使用日益增加,对粮食生产的影响...
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