Controlled-release fertilizer containing multi-humus and preparation method thereof

Abstract

The present invention relates to a controlled-release fertilizer containing multi-humus, which consists of a coating and a fertilizer core. The fertilizer core is formed by mixing urea containing urease inhibitors with humus, wherein the urease inhibitor, the urea and the humus are mixed in ratio of 15-30:100-150:20-45 in parts by weight. The weight of the coating is 7% of that of the core. The controlled-release fertilizer is capable of improving the fertilizer efficiency, alleviating crop diseases, improving the agricultural product quality and increasing both production and income. The controlled-release fertilizer changes the traditional fertilizing mode so that most crops only need to be fertilized once, and thereby reducing the fertilizing amount and frequency, and saving cost, time and labor.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a controlled-release fertilizer containing humus and other nutrient elements and a preparation method thereof. Background technique [0002] my country is a large agricultural country. Due to the long-term and large-scale use of traditional chemical fertilizers, the demand for a single nutrient in the soil is constantly increasing, which not only increases the amount of fertilizer applied, but also increases the cost of agricultural production. It also destroys the soil structure and reduces the quality of agricultural products. . In addition, the effective utilization rate of traditional chemical fertilizer nutrients is low, and long-term use will not only cause a large loss of fertilizer nutrients. What's more serious is that the long-term large-scale application of traditional chemical fertilizers has led to increased nitrate content in groundwater, eutrophication of lake water, and increasingl...

AI Technical Summary

Problems solved by technology

[0002] my country is a large agricultural country. Due to the long-term and large-scale use of traditional chemical fertilizers, the demand for a single nutrient in the soil is constantly increasing, which not only increases the amount of fertilizer applied, but also increases the cost of agricultural production. It also destroys the soil structure and reduces the quality of agricultural products.

In addition, the effective utilization rate of traditional chemical fertilizer nutrients is low, and long-term use will not only cause a large loss of fertilizer nutrients

What is more serious is that the long-term large-scale application of traditional chemical fertilizers has led to increased nitrate content in groundwater, eutrophication of lake water, and increasingly serious atmospheric greenhouse effects.