Urea resin foam particle matrix and processing method thereof

Abstract

A urea resin foam particle matrix is prepared by evenly mixing, by weight, 20-50% of urea resin foam particles and 40-60% of nutrition particles. A main raw material of the nutrition particles is one or more of straw, sawdust, turf, distillers' grains, agaric residues, sludge, rice husks and biogas residues. The invention further discloses a processing method of the urea resin foam particle matrix. The processing method comprises the steps that the nutrition particles are prepared; the nutrition particles are put into a discharging hopper, and the discharging speed is set; urea resin foam is prepared; matrix particles are prepared; the urea resin foam particles wrapped with the nutrition particles fall into a collecting bin in a variable weight mode, and the finished product is obtained. A large quantity of holes exist between the urea resin foam particles, so that water retention, breathing, rooting and sprouting are facilitated, and meanwhile the using amount of the urea resin foam is reduced; the urea resin foam sticks a layer of nutrition particles through the stickness of the urea resin foam in the solidifying process, and thus the nutrition particles can be evenly distributed on the peripheries of the urea resin foam particles.

Description

Technical field: [0001] The invention relates to the technical field of seedling-raising substrate processing, in particular to a urea-formaldehyde resin foam particle substrate and a processing method thereof. Background technique: [0002] Soilless culture (soilless culture) refers to the cultivation of horticultural crops without natural soil but with a substrate or only with a substrate when raising seedlings. They are called seedlings or cultivation substrates respectively. After planting, they are irrigated with nutrient solution, which can save land. Cultivation can artificially create a good rhizosphere environment, effectively prevent soil continuous cropping diseases and physiological obstacles caused by soil salt accumulation, fully meet the needs of crops for mineral nutrition, water, gas and other environmental conditions, and the basic materials for cultivation can be recycled. , so it has the characteristics of water saving, fertilizer saving, labor saving, hi...

AI Technical Summary

Problems solved by technology

Because the lower layer of this matrix is ​​plate-shaped, the consumption of urea-formaldehyde resin foam is high, the small porosity is abundant, and the large porosity is insufficient, so it is not ideal for crop root respiration. In addition, a thicker peat / straw / bacteria chaff should be covered on the upper layer. However, the seedlings are rooted on the urea-formaldehyde resin foam board, and the second and third seedlings cannot be divided. The secondary main root and the main fine root system are seriously damaged during transplanting, and nutrients are not easy to reach the roots, or absorb when transplanting and dividing seedlings. Functionality is broken and less than ideal

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