Preparation method of straw pulp mulch film

Abstract

The invention provides a preparation method of a straw pulp mulch film. The preparation method comprises the following steps that crop straws or herbages as raw materials are crushed and are then added with an agricultural water-retention agent, a thickening agent and a corresponding fertilizer according to an appropriate ratio to form turbid liquid-type straw pulp mulch film slurry comprising uniformly distributed slurry particles and having excellent rheological properties; and the turbid liquid-type straw pulp mulch film slurry is sprayed to coat the surface of soil thereby forming the straw pulp mulch film having effects of water retention and moisture conservation of soil. After decomposition, the straw pulp mulch film can improve soil fertility. In a validity period of the straw pulp mulch film, compared with the normally farmed farmland, a farmland adopted the straw pulp mulch film has an average soil water content improved by more than 2%. The straw pulp mulch film prepared from raw materials of crop straws has a material cost of about 300Yuan / ha, wherein the material cost is far less than a plastic mulch film material cost of 2800Yuan / ha. Under the conditions of good water-retention effects and wide raw material sources, use of the straw pulp mulch film has obvious superiority in cost and environmental protection. The preparation method is simple and operation is convenient.

Description

technical field [0001] The invention relates to a preparation method of straw pulp mulch film. Background technique [0002] For decades, plastic mulch has been one of the main agricultural water conservation measures, which has driven the transformation of agricultural production methods and the rapid development of agricultural productivity. However, with the extension of the application life of the mulch film, its potential hazards in the past have gradually emerged. Due to its non-degradability, the plastic mulch film is not easy to degrade, so that the remaining mulch film fragments in the field deteriorate the physical and chemical properties of the soil, and at the same time pollute the groundwater and the surrounding environment, which brings a series of social and environmental problems; Factors such as rising costs and limiting the application range of plastic mulch have made the contradiction between the application of plastic mulch and sustainable development in...

AI Technical Summary

Problems solved by technology

Although straw pulp mulch has a good development prospect, there are still some problems: ① On the basic premise of ensuring its environmental protection and degradability, how to select raw materials and related additives so that the straw pulp mulch has a considerable dry and wet strength, and how to make the grass Grass mulch film can achieve good moisture retention and prolong its use time; ② How to clarify its use characteristics and technical application scope according to the performance of different types of straw pulp mulch film; ③ The promotion and use of straw pulp mulch film depends to a large extent on the cost of use , how to simplify the production process and use method, reduce the cost of use, and make it easy to promote and use on the basis of ensuring its use performance