A fully degradable soil moisture-retaining film spray liquid

Abstract

The invention belongs to the technical field of agricultural films and discloses full-degradable soil moisture preservation film spraying liquid and a utilization method thereof. The spraying liquid is prepared from, by weight, 20-40 parts of polyhydroxyalkanoate polymer, 8-15 parts of fatty ester polycondensate, 20-30 parts of algae extract, 100-150 parts of n-hexane, 30-40 parts of okra straw leaf powder, 5-10 parts of corn stigma, 3-5 parts of modified clay powder, 10-15 parts of a film forming agent, 5-12 parts of a cross-linking agent, 3-5 parts of a photosensitizer and 8-15 parts of optional functional additives. In application, the spraying liquid is added into water 10-14 times of the spraying liquid in mass, well stirred and sprayed to the soil surface to form a mulching film. The spraying liquid is effective and quick in ground surface film forming and degradable fully and automatically, has functions of soil moisture preservation and warming and further has functions of soil structural improvement and soil fertility improvement.

Description

Technical field: [0001] The invention belongs to the technical field of agricultural film preparation, and relates to a mulch spray liquid, in particular to a fully degradable soil moisture-preserving film spray liquid, which is used in agricultural occasions to adjust and protect soil moisture and improve crop development ability. Background technique: [0002] The application of plastic film can meet the needs of crop heat preservation, moisture conservation, and fertility maintenance to increase production and income, and has been widely promoted and applied. It has become an important technology for increasing agricultural production. However, since most of the mulch films are made of polyethylene or polyvinyl chloride, their stability is extremely high, and the degradation process is quite slow, which has caused serious white pollution. In order to solve this problem, driven by the development of science and technology, a variety of degradable mulch films have been grad...

AI Technical Summary

Problems solved by technology

However, since most of the mulch films are made of polyethylene or polyvinyl chloride, their stability is extremely high, and the degradation process is quite slow, which has caused serious white pollution.

In order to solve this problem, driven by the development of science and technology, a variety of degradable mulch films have been gradually developed, mainly using one or more of humic acid, emulsified asphalt, polyvinyl alcohol, polyacrylate and their polymers. Main raw materials, such as Chinese patent CN102533276A discloses the production of degradable liquid plastic film with montmorillonite and humic acid, and humic acid is used as the main raw material to solve the pollution of plastic film to the land environment; Chinese patent CN1277228A discloses a multifunctional degradable black liquid plastic film Mainly use petroleum asphalt or residual oil as raw materials, the cost is high, and the source of raw materials is limited to a certain extent. In addition, when the substance is diluted, it is easily emulsified when it encounters hard water, resulting in a decrease in film formation; Chinese patent CN1935878A discloses a multifunctional degradable film. A mixed solution of polyvinyl alcohol, acrylic acid, and starch, both of which have high cost and poor degradability

Chinese patent CN105503482A discloses a seaweed liquid fertilizer mulch powder, which uses seaweed extract powder as the main raw material, mixes polyvinyl alcohol, hydroxymethyl cellulose, silk protein powder, oxygen enhancer and inorganic fertilizer particles to make a degradable mulch film , but there are problems such as complex production of seaweed extract powder, long film-forming time and insufficient tensile strength caused by the single use of seaweed as the main raw material

However, the degradable mulch in the prior art avoids "white pollution" to a certain extent, but generally has disadvantages such as long film-forming time, poor film-forming effect, and incomplete degradation. The use effect is poor, and the promotion also has certain limitations. Therefore, a fully degradable soil moisture-retaining film spray solution is designed and prepared

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