WO2018133659A1

WO2018133659A1 - Mulching film with fluff on surface thereof

Info

Publication number: WO2018133659A1
Application number: PCT/CN2018/000019
Authority: WO
Inventors: 高建明; 易克贤; 张世清; 陈河龙; 刘巧莲; 杨龙
Original assignee: 中国热带农业科学院热带生物技术研究所
Priority date: 2017-01-20
Filing date: 2018-01-16
Publication date: 2018-07-26
Also published as: CN106718424A; CN106718424B

Abstract

Disclosed is a mulching film with fluff on the surface thereof, wherein same is used for being paved on farmland for planting crops. In addition to having the effect of a traditional mulching film, the mulching film with fluff on the surface thereof can have certain preventive effects on crop diseases caused by stormy weather.

Description

Film with fluff on the surface

Technical field

The present invention relates to a mulch film laid on a farmland, more specifically a mulch film having a surface on the surface.

Background technique

The mulch film is a film covering the farmland, mostly polyethylene, but also polyvinyl chloride, polypropylene, polystyrene, resin, degradable material or other materials. Divided by color, there are white mulch, black mulch, silver mulch, black and white mulch, blue mulch, green mulch, red mulch, etc., each with different uses. The white mulch can improve the ground temperature, water retention, and fertilizer efficiency. It is mostly used in spring and autumn. The black film has low light transmittance, which can effectively prevent the evaporation of water in the soil and inhibit the growth of weeds, but the temperature is slower than white. The mulch film and ground cover can significantly reduce the ground temperature, inhibit weeds and maintain soil moisture. It is suitable for high temperature cultivation in summer and autumn. The silver-gray film has a light transmittance of about 60%, which can reflect ultraviolet rays. The ground cover has cooling, moisturizing and repelling. The function of aphids is suitable for the heat-resistant cultivation of summer and autumn crops; when the black and white mulch is covered, the black face is facing down and the white face is facing upwards. It not only has the effect of black mulching, but also has white film surface reflection. The effect is often used for the cultivation of vegetable cover in autumn and winter; the light transmittance of blue mulch film is lower than that of white agricultural film under weak light conditions, and the light transmittance is lower than that of white agricultural film under strong light conditions, and the thermal insulation performance is good. In the nursery and nursery, not only the seedling rate is high, but also the seedlings are thick and strong, and there is obvious effect of increasing yield; the green mulch can increase the green light and make the miscellaneous Controlled growth, better control of weeds, improved yield; red red light transmissive film, while the other block is not conducive to the growth of crops through the shade.

The perforated mulch film has a hole in the surface of the mulch film when the mulch film is processed. After the mulch film is laid in the farmland, seeds or seedlings are planted in the holes, thereby avoiding the trouble of cutting the mulch film after the seeds are germinated.

Many plant diseases are caused by three pathogens such as bacteria, fungi and oomycetes. Rainwater carrying pathogens, invading through plant wounds and stomata, is an important means of transmission. In the cold winter, the pathogens can overwinter on the residues of farmland disease plants in the form of conidia and mycelium. The reason why crops are susceptible to outbreaks after rain and wind is that pathogens located in farmland diseased plants and soil are scattered throughout the farmland through rainwater, and the crops are damaged by wind and rain, and when the raindrops splash on the farmland, the muddy water with pathogens falls. On the stems and leaves of crops with reduced resistance after wind and rain, it may cause crop disease.

Cultivate crops on the surface of the mulch without fluff (hereinafter referred to as the traditional mulch). When encountering wind and rain, the pathogens on some diseased plants and the pathogens in the soil will exist on the surface of the traditional mulch with rainwater. The water droplets on the mulch and splashed may contain pathogenic bacteria. When water droplets containing pathogenic bacteria fall on the stems and leaves of the crop, it may cause crop disease.

Summary of the invention

The invention is a mulch film with fluff on the surface. After the mulch is laid on the farmland, in the stormy weather, the raindrops hit the mulch with the fluff, and it is not easy to splash the muddy water with the pathogen on the mulch to the crop stems and leaves. On the top, crops are not easy to develop. The invention has a certain preventive effect on crop diseases.

detailed description

The invention discloses the application of the ground film with fluff on the crop disease prevention, and those skilled in the art can learn from the contents of the paper and appropriately improve the implementation. It is to be understood that all such alternatives and modifications are obvious to those skilled in the art and are considered to be included in the present invention.

The invention is further illustrated below in conjunction with the examples.

The raw material for producing the mulch with fluff on the surface is the same as the raw material for producing the conventional mulch, and may be polyethylene, polyvinyl chloride, polypropylene, polystyrene, resin, degradable material or other materials. This embodiment uses polyethylene.

The method for manufacturing the film with fluff on the surface is similar to the method for manufacturing the conventional film. The difference is that the film with fluff on the surface is manufactured by the film formed by the film after the raw material is melted. The surface of the mold has holes, and the function of the hole is The surface of the mulch film was provided with fluff. The film thickness of this example was 0.05 cm (not counting fluff), the hole depth was 1.5 cm, the hole diameter was 0.5 mm, and the density of the holes was 20 pieces/cm ² .

The mulch with fluff on the surface can also have different widths, different colors, different thicknesses, with or without holes, like traditional mulch. The film produced in this example has a width of 1.5 m and is black.

An application example of a mulch film with fluff on the surface is that on May 3, 2016, a 1.5 m wide field ridge is formed into a turtle shape at a test site of 19° 61′59.57′′ north latitude and 110°72′27.89′′ east longitude. The mulch with the surface of the fluff and the traditional film are laid on the ridge. The holes were cut according to the row spacing of 80 cm and the plant spacing of 30 cm, and used for transplanting the previously cultivated Astragalus seedlings. 1000 seedlings of Astragalus membranaceus were transplanted on the mulch with the fluff on the surface, the traditional mulch film and the open field. After the plant experienced two major storms, that is, on October 3, 2016, the growth of the mulch film on the surface, the traditional mulch film, and the scutellaria plant on the open field were observed, and the scutellaria plant on the mulch with the surface was found. The growth is obviously better than the growth of traditional mulch and the scutellaria plants on the open field. Statistics on bacterial strains caused by bacteria, fungi, and oomycetes showed that the incidence of scutellaria on the mulch with surface was 1.5%, and the incidence of scutellaria on traditional mulch was 20.3%. The incidence rate was 50.7%.

The same method was used to grow cucumber, watermelon, cantaloupe, cowpea, green beans, potatoes, radish, cabbage, tomato, and winter melon, all of which were similar to those of Astragalus.

Claims

A mulch film characterized in that the surface of the mulch film is provided with fluff.