肥料是作物生产各项物资投入占比例最大的一项,增产效益也最为明显。肥料的使用对于保持和提高地力,提高农产品质量,保障国家粮食安全,缓解和消除环境压力等方面都具有重要作用。但是,肥料的不科学管理和使用则会引起农业生产效益、农产品品质和环境质量的下降。因此,养分资源 Fertilizer is the largest proportion of investment in the production of various kinds of crop production, yield increase is also the most obvious. The use of fertilizers plays an important role in maintaining and improving fertility, improving the quality of agricultural products, ensuring national food security, and alleviating and eliminating environmental pressures. However, the unscientific management and use of fertilizers will lead to the decline of agricultural production efficiency, agricultural product quality and environmental quality. Therefore, nutrient resources