Biological targeted regulating fertilizer as well as preparation method and application thereof

The invention provides a biological targeted regulating fertilizer as well as a preparation method and application thereof, and relates to the technical field of biological fertilizers. The biological targeted regulating fertilizer is prepared from the following components in parts by mass: 26 to 78 parts of cow dung, 18 to 54 parts of sheep manure, 13 to 26 parts of bottom mud, 17 to 42 parts of water, 0.09 to 0.2 part of a microbial agent and 0.9 to 2.1 parts of hay. According to the biological targeted regulating fertilizer prepared from the components, recycling, productization and application of pollutants are realized, that is, the pollutants are changed into resources, and biological targeted regulating fertilizer products are produced and applied to grassland remediation to improve grassland soil nutrients, so that the grass yield of grassland is increased, and the vegetation coverage of the grassland is increased. After the problems of substandard lake water quality, difficulty ...