The special role of black film
First, strong fertilizer retention ability
Shandong Chunyu Water-saving Irrigation Equipment Co., Ltd., founded in 2011, is located in Laiwu High-tech Zone, Jinan City. It is a high-tech enterprise focusing on innovative and efficient emitter mold manufacturing and emitter product research and development and production. After nearly ten years of innovation and development, it is the invisible champion enterprise in Shandong Province, and now it is in a leading position in this field in China.
Spring rain people-oriented, build talent highland. At present, the company has 16 high, fine and advanced technical personnel, and cooperates with a number of scientific research institutes, forming a mold design, emitter testing, flow testing and other professional technical personnel team. In recent years, it has obtained 3 invention patents, 33 utility model patents and 3 patent awards. In 2019, it was identified as an intellectual property advantage enterprise in Jinan. It has undertaken 4 provincial science and technology innovation projects and won 2 second prizes of Shandong Science and Technology Progress Award. The company has built Jinan drip emitter mold engineering technology research center, the company has a slow wire cutting, CNC machining center, precision EDM machine, 3D projection measuring instrument, CNC engraving, laser engraving and other advanced processing equipment. Mature technology and rich experience support the excellent quality of Chunyu. Spring Rain pays attention to every link of production, implements 8S management, strictly controls the quality of products at the beginning, the middle and the end, and forms the seamless link of production management. The company has independently researched and developed flat emitter molds with full hot runner, cylindrical emitter molds with full hot runner and other products. With excellent quality, competitive price and good after-sales service, the company is well known at home and abroad, and has been sold well in Egypt, India, Iran, Turkey, Saudi Arabia, the United States and other countries.
With the vision of "building a global professional emitter mold supplier" and the mission of "providing solutions for efficient and innovative production of global water-saving irrigation enterprises", the company takes "scientific and technological innovation to scale new heights; Keep improving, the pursuit of excellence; Honesty and trustworthiness, win-win cooperation "for the values of the enterprise. For the construction of water - saving and resource-saving society to make a positive contribution.
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In the soil covered with black agricultural mulch, the organic matter will be in a normal circulation due to the steady change of soil temperature. The measurements show that the nutrition, such as total nitrogen, organic matter, available potassium, and alkali-hydrolyzed nitrogen in the soil under the black film covering cultivated crops, Than to cover the transparent film have different degrees of increase, the general increase of up to 2-17.4%.
Second, good water retention
According to the test, the water content of 5 cm below the ground after covering the black agricultural film is 4-10% higher than that of the transparent film no matter whether it is covered two days or 35 days after the cover.
Third, prevent adverse effects
The black agricultural film has low light transmittance and low radiant heat transmission, so the daily soil temperature of the covered soil can be reduced by a small amount. According to the test, the soil covered with black film, in the period of plant growth, the soil temperature is 1-3 °C lower than the transparent film. As the warming rate is small, it is conducive to the normal growth of crop roots, especially those vegetables that are less demanding on the soil temperature, such as tomatoes, beans, and bell peppers.
Fourth, increase food production
As the black plastic film for agricultural use has a smaller increase in soil temperature than the transparent film, especially for some root systems requiring low soil temperature, such as tomatoes, green beans, kidney beans, and late-maturing watermelons, the coverage of black film can be covered regardless of early yield or total yield. The transparent membrane is high. According to the experiment, the effect of increasing yield during the cultivation of tomatoes covered with black film is the most obvious, with an increase of 11.8%.
V. Inhibition of weeds
Grass cover is a serious problem when covered with transparent membranes. After being covered with agricultural black mulch, ground weeds are difficult to grow due to insufficient light conditions. Measurements show that after covering the dark film with a light transmittance of 5%, soil is almost a month later. Weeds are not seen. When covered with a black plastic film with a light transmittance of 10%, weeds grow in the soil, but the growth power is weak and does not cause disasters.