Biodegradable algae liquid plastic film and preparation method thereof

Abstract

The invention provides a biodegradable algae liquid plastic film, which is characterized by comprising the following components in parts by weight: 100 parts of algae extract, 2-10 parts of polyacrylate alginate jelly resin, 50-70 parts of lignosulfonate, 10-20 parts of humic acid, 20-30 parts of molasses or biochemical fulvate or a mixture of molasses and biochemical fulvate at a weight ratio of 1: 2, 10-20 parts of carboxymethyl cellulose and 300-500 parts of water. In addition, the invention also provides a preparation method of the algae liquid plastic film.

Description

technical field [0001] The invention relates to an agricultural liquid mulch film, in particular to a biodegradable seaweed liquid mulch film and a preparation method thereof. Background technique [0002] Agricultural plastic film mulching technology has a history of nearly 40 years in my country. Due to the remarkable effect of film mulching cultivation on increasing production and income, plastic film mulching technology has become an important part of my country's alpine, arid, semi-arid, low-lying, saline-alkali areas, especially in my country's vast areas. It is an important measure for agricultural drought resistance, water saving and crop production increase in Northwest China and Northeast China. At present, the covered area of ​​plastic film in my country has reached 250 million mu, increasing at a rate of 10 million mu every year, and the total annual use of plastic film has exceeded 450,000 tons, ranking first in the world. [0003] The extensive use of agricultu...

AI Technical Summary

Problems solved by technology

[0003] The extensive use of agricultural plastic mulch has led to a large accumulation of soil residue and serious land pollution

With the continuation of plastic film covering time, the accumulation of residual film in the soil plow layer will lead to the destruction of soil aggregate structure, the infiltration of soil capillary water and natural water will be seriously hindered, and the soil porosity, permeability and water content will be significantly reduced, and the bulk density and The relative density increases significantly, which directly affects the soil microbial environment and soil harvest, reduces soil fertility, and leads to a serious reduction in crop production

According to the survey and measurement of the Ministry of Agriculture, in Beijing, Tianjin, Xinjiang, Heilongjiang, Shanghai, Hubei and other provinces and cities with serious plastic film pollution, in the surface soil covered continuously for 5 years, the accumulation of residual film per hectare is generally between 90-135Kg , the place with serious pollution can reach up to 270Kg, and the crop yield will be reduced by 15%-30%. In addition, the damaged ones after use can be recycled and directly burned in the field. The harmful gas produced by it will affect the air quality; Straw and feed are accidentally eaten by livestock such as cattle and sheep, leading to gastrointestinal dysfunction, small drop in body condition or death.