Weak-acid slow controlled-release fertilizer

Abstract

The invention discloses a weak-acid slow controlled-release fertilizer which is prepared from the following ingredients in parts by weight: 150-200 parts of potassium chloride, 200-250 parts of monoammonium phosphate, 370-400 parts of urea, 120-160 parts of ammonium chloride, 10-20 parts of sulfuric acid, 2-8 parts of a urease inhibitor, 2-8 parts of urea formaldehyde, 20-30 parts of synthetic ammonium, 2-8 parts of a nitrification inhibitor, 1-4 parts of an ammonium stabilizer, 0.3-0.8 part of a phosphorus activator, 0.3-0.8 part of a protective agent, 0.3-0.8 part of heptahydrate, 0.3-0.8 part of water-soluble silicon and 0.8-1.5 parts of an additive. The fertilizer has the advantages as follows: the fertilizer efficiency period is long, the nutrient utilization rate is high, the physical properties are good, and the environmental pollution is reduced greatly.

Description

technical field

[0001] The invention relates to the field of chemical fertilizers, and in particular provides a weakly acidic slow-release fertilizer. Background technique

[0002] As the main source of plant nutrients and improving soil properties, fertilizer is of great significance to promote plant growth and increase the yield of food, fruits and vegetables. The current fertilizers mainly include chemical fertilizers, organic fertilizers and biological fertilizers. With the development of industrial fertilizers, people's requirements for fertilizers are also increasing, and the current fertilizers cannot meet people's requirements.

[0003] Therefore, how to improve existing fertilizers has become an urgent problem to be solved. Contents of the invention

[0004] In view of this, the purpose of the present invention is to provide a weakly acidic slow-controlled release fertilizer, characterized in that: the fertilizer is made of the following components by weight rat...