A kind of fertilizer-increasing and water-retaining liquid mulch film and its preparation method

A technology of liquid mulch and fertilizer, applied in fertilization devices, fertilizer mixtures, plant protection covers, etc., can solve problems such as poor film performance, and achieve the effects of reducing bulk density, improving utilization, and preventing damage
CN104804141BInactive Publication Date: 2018-04-06CHANGZHOU GUOBO NEW MATERIAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGZHOU GUOBO NEW MATERIAL TECH CO LTD
Publication Date
2018-04-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a liquid fertilizing and water-retaining mulching film and a preparation method thereof and belongs to the technical field of agricultural production. The liquid mulching film comprises components in percentage by mass as follows: 1%-10% of a modified macromolecular composite polymer and 90%-99% of a fertilizing agent; the modified macromolecular composite polymer comprises components in parts by weight as follows: 35-45 parts of ultra-fine silica sol, 5-10 parts of zinc oxide, 40-100 parts of carboxymethylcellulose or hydroxypropyl methyl cellulose, 20-30 parts of N-isopropylacrylamide, 0.02-0.3 parts of a cross-linking agent and 0.4-1.2 parts of an initiator; the solid content of the ultra-fine silica sol is in a range of 10-30wt%, and particle sizes of silica in the ultra-fine silica sol are in a range of 1-100 nm. The prepared liquid mulching film can significantly increase the water-retention rate of soil and improve physical and chemical properties of the soil, can be completely degraded, is free of pollution and can substitute for plastic mulching films on a large scale.
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Description

technical field

[0001] The invention relates to an agricultural mulching film, in particular to a fertilizer-increasing and water-retaining liquid mulching film and a preparation method thereof. The mulching film is a high-molecular polymer composite liquid mulching film, which has the functions of water retention, fattening and degradability, and belongs to agricultural production technology field. Background technique

[0002] Plastic mulch has the functions of heat preservation, water retention, and frost protection. The application of mulch technology has greatly improved and increased crop yields and benefits, and has changed human agricultural production methods and developed human agricultural productivity. In the 1970s, my country first introduced film mulching technology. As of 2005, the area covered by plastic mulch in my country has exceeded 100 million mu, and there are more than 50 kinds of cover crops, and it is still increasing at a rate of 10% every year. Ac...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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