Degradable bio-based seedling raising pot, production method thereof, regulation method in degradation period and application of degradable bio-based seedling raising pot

Abstract

The invention discloses a degradable bio-based seedling raising pot, a production method thereof, a regulation method in a degradation period and an application of the degradable bio-based seedling raising pot. The degradable bio-based seedling raising pot is produced from straw powder, wheat bran and an adhesive through dry-method hot pressing after mixing. The degradable bio-based seedling raising pot can keep certain strength in a seedling raising process and is relatively complete in appearance, after seedlings and the pot are transplanted to a field simultaneously, the pot can crack and disintegrate rapidly, and plant root extension is facilitated.

Description

technical field [0001] The invention relates to the utilization of agricultural and forestry biomass and degradable bio-based materials and a manufacturing method thereof, in particular to a degradable bio-based seedling pot as well as its preparation method and application. 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 biologic...

AI Technical Summary

Problems solved by technology

This method uses polyacrylamide as a binder, which needs to be diluted with water when used, and the product needs to be dried until the moisture content is lower than 15% after demoulding, and the process is relatively cumbersome.

[0009] In a word, the existing production methods of degradable seedling pots are all insufficient, or wet pressing requires dehydration, high energy consumption, or needs to add a large amount of adhesive to increase the cost of raw materials, or directly press without adding adhesive to shape the effect Not good, or the pre-processing steps are complicated

Moreover, it is difficult for the seedling pots prepared by the prior art to simultaneously maintain uprightness in the process of crop seedling cultivation to facilitate subsequent transplanting and rapidly rot after the pot seedlings are moved to the field to facilitate the extension and development of seedling roots.

For example: the seedling pot made of a single starch-based adhesive and straw powder has a fast degradation rate, but it is easily damaged during the crop seedling raising process, and it is difficult to maintain the uprightness of the pot body, which is not conducive to the subsequent transplanting of seedlings; while a single melamine resin Seedling pots made of urea-formaldehyde resin or urea-formaldehyde resin as an adhesive and straw powder molding have a slow degradation rate and can maintain the uprightness of the pot body during the crop seedling raising process, but it is not conducive to the extension and development of the seedling root system after the pot seedlings are moved to the field.

Images