１９９０─１９９４年重庆市场化肥质量抽查结果分析重庆市化肥商品质检站李伟，陈智勇，张远容化肥在农业生产中占有十分重要的地位。国内外大量的资料表明，在农业增产措施中，化肥对粮食产量的贡献约占３０％－５０％。据了解，重庆市１９９４年７０万公顷耕地共施用化... 1990-1994 Analysis on spot check of fertilizer quality in Chongqing market Li Wei, Chen Zhiyong, Zhang Yuanrong Chemical fertilizer quality inspection station in Chongqing occupies a very important position in agricultural production. A large number of domestic and foreign data show that in the agricultural production measures, the contribution of chemical fertilizers to grain production accounts for about 30% -50%. It is understood that Chongqing Municipality, 700,000 hectares of arable land in 1994 were co-applied ...