Raw material pretreatment method for straw-based seedling raising pot, product and production method of seedling raising pot

Abstract

The invention discloses a raw material pretreatment method for a straw-based seedling raising pot, a product and a production method of the seedling raising pot. The raw material pretreatment method comprises the following steps: straw materials are dried, subjected to impurity removal and crushed; water accounting for 1.5-6 times by mass of the straw materials is added for wetting; cooking or steam explosion or combined treatment of cooking and steam explosion is performed; cooling is performed; drying and crushing are performed. With adoption of the method, the usability of the straw-based seedling raising pot can be improved, the dosage of an adhesive can be used, and the production cost can be reduced.

Description

technical field [0001] The invention relates to the utilization of agricultural and forestry biomass and degradable bio-based materials, in particular to a method for preparing straw-based seedling pots and a method for pretreatment of raw materials. Background technique [0002] my country's grain output has exceeded one trillion catties for three consecutive years, the flower production area has reached 147,500 hectares, 810 million potted plants, and 1.8 billion ornamental seedlings. There is a huge demand for seedling pots. At present, most of the seedlings are planted in plastic seedling pots. When the seedlings grow to the point where they need to be transplanted, they must be taken out and then planted in the soil. This process causes damage to the root system of potted plants, which is not conducive to the growth of potted plants. Pots are not actually recyclable. Bio-based materials refer to a new class of materials manufactured by biological, chemical and physical...

AI Technical Summary

Problems solved by technology

[0006] The "Alkaline Ozone Pretreatment Method for Straw" disclosed in Chinese Patent Publication No. CN101121175A uses lime water and ozone to treat straw so that it can be biodegraded faster and thoroughly; The pretreatment method of rice straw" uses high-concentration NaOH to carry out alkali treatment and bleaching on rice straw to obtain white straw cellulose, but this method consumes a lot of chemical reagents, the yield is low, the cost of pretreatment is high, and requires Equipment resistant to high concentrations of NaOH

On the one hand, the above pretreatment method removes lignin, which leads to a large amount of adhesive required for the preparation of seedling pots by dry hot pressing, which makes it difficult to effectively reduce the production cost of straw-based seedling pots; The decrease in toughness and strength will also affect the performance of the formed straw-based seedling pot products, such as brittle and fragile, which is not conducive to transportation, etc.

Therefore, the straw pretreatment technology used in other fields cannot be used for the pretreatment of seedling pot raw material straw

[0008] To sum up, in the prior art of the above degradable bio-based seedling containers, either the raw materials are not effectively pretreated (only crushed), and the plasticity of the seedling pots is not increased from the perspective of raw materials, so that a large amount of glue is required. The plasticity can be improved by using additives; or the pretreatment method is complex and time-consuming, resulting in poor performance of the nursery pot or high production costs