Humic acid-cheated long-acting slow release organic fertilizer and preparation method thereof

Abstract

The invention discloses a humic acid-chelated long-acting slow release organic fertilizer and a preparation method thereof. The organic fertilizer is prepared from, by weight, n-hexane, an epoxidation modifier, tea seed dregs, soybean dregs, apricot kernel residues, limestone grains, barley malt, rice husks, bagasse, dried cow dung, straw mushroom waste residues, brown sugar residues, lotus pond mud, humic acid powder, rare earth elements and a proper amount of water. Domestic wastes are embedded and retted and are used o prepare the organic fertilizer, material residues, rich in incompletely-extracted plant oil, in the above raw materials are ground and are finely extracted with an organic solvent, the obtained extract can be used for coating the organic fertilizer after being modified in order to make the granular organic fertilizer well shaped and have a very good slow release effect, and the added humic acid and rare earth elements are also retted to cheate parts of trace elements in order to improve the quality of the organic fertilizer.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a humic acid chelation type long-acting slow-release organic fertilizer and a preparation method thereof. Background technique [0002] Nowadays, many organic fertilizers are directly used for the release of crops. Organic fertilizers are generally powders. The reason is that the fermentation is relatively thorough and the particle size is small. The advantage of this is that it is convenient to apply, and the fertilizer can be directly applied to the fertilization point. And small particles of organic matter are easily absorbed by crops. However, this approach inevitably brings some disadvantages. On the one hand, due to the small particle size of organic fertilizers, for the soil that is too soft, the gaps in the soil are large, and the fertilizer can easily penetrate deep into the soil, exceeding the absorption area of ​​the crop root system. range, and if the...

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Problems solved by technology

However, this approach inevitably brings some disadvantages. On the one hand, due to the small particle size of organic fertilizers, for the soil that is too soft, the gaps in the soil are large, and the fertilizer can easily penetrate deep into the soil, exceeding the absorption area of ​​the crop root system. range, and if the soil is too hardened, organic fertilizers are not conducive to infiltration into the soil, and the function of root system absorption is out of the question. The most important thing is that the fertilizer stays on the upper surface of the soil for a long time, once it is watered or it rains The effect of weather and water flow is likely to wash away the organic fertilizer, causing a large amount of loss, and the effect is even worse. It is difficult to control the proper soil looseness between soft and hardened soil.