Phenolic resin foam medium block for cuttage

Abstract

The invention discloses a phenolic resin foam medium block for cuttage. A specific activating agent is added in a phenolic resin matrix and is physically foamed by a foaming agent to form a loose cross-linking structure; then the loose cross-linking structure is cured to form a microporous foam body with a certain strength under the action of a curing agent; and finally the foam body is cut into a medium block for cuttage. The medium block is provided with microporous holes and is light in weight, low in price and high in planting percentage during cuttage for planting seedlings; due to the blocky characteristic, the phenolic resin is extremely firm, cultured seedlings are especially suitable for long-distance transportation, and thus the possibility that the root system is damaged is reduced; the damage to the root system hardly occurs when the cultured seedlings cut by the medium block are transplanted; the root system is strong in vitality and stress resistance, so that the recovering stage after the plants are transferred into basins is greatly shortened; and the plants are grown to be consistent after the seedlings cut by the medium block are transferred into the basins or transplanted and the rate of the finished products is high.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation, and relates to a cutting medium, in particular to a phenolic resin foam medium block for cutting. Background technique [0002] Plant cuttings use a wide range of media. Commonly used inorganic media include vermiculite, perlite, rock wool, sand, slag, and ceramsite, while organic media include peat, bark, wood chips, shavings, coke chaff, and rice husk. [0003] Vermiculite has a bulk density of 0.07 to 0.12 g / cm3 and a pH value of 7 to 9. It is light in body and has a high cation exchange capacity. It has a particularly strong ability to retain water and fertilizer. It does not need to be disinfected when used, but it does not contain any nutrients. Long-term use, it is easy to break, the pores become smaller, and the ventilation and drainage properties become poor; the perlite has a bulk density of 0.08 to 0.18 g / cm3, a pH value of 7 to 7.5, easy drainage, good permeability, stable p...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the defects of various existing cutting media, the present invention provides a medium block more suitable for cutting, which is made of phenolic resin foam

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