Slow release/controlled release fertilizer for regulating and controlling crop nutrition all the time and preparation method thereof

Abstract

The invention relates to a slow release / controlled release fertilizer for regulating and controlling crop nutrition all the time and preparation method thereof, wherein the fertilizer comprises a framework integument and exterior film using three proportions of nitrogen, phosphor and potassium as the core, and different integument material, integument processes and different emancipation systems are employed, the fertilizer also comprises a releasing bundle layer for controlling the fertilizer, addition agent, binding agent with adhesive action, amendment agent, solubilizing agent and active agent.

Description

technical field

[0001] The invention relates to a slow-release / controlled-release fertilizer for fully regulating crop nutrition, and to a preparation method of the slow-release / controlled-release fertilizer for fully regulating crop nutrition. Background technique

[0002] China is the country that consumes the most chemical fertilizers in the world. In 1999, the total consumption of chemical fertilizers was 41.2458 million tons (converted to pure), and according to the survey of 782 field test sites in the country by the Nanjing Soil Institute of the Chinese Academy of Sciences, the fertilizer utilization rate in my country is 28-41%. The lowest is only 16-22%, and fertilizer is the grain of crops. According to the statistics of the United Nations Food and Agriculture Organization (FAO), chemical fertilizers contribute 40% to food production. China can feed 22% of the world's population with 7% of the world's arable land It should be said that half of the population is due t...