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The correct use of colored agricultural film
The proper use of colored agricultural films can significantly enhance crop yields and reduce the risk of diseases. However, if used incorrectly, it may lead to negative outcomes that are hard to predict. Below are some scientifically proven methods for using various colored agricultural films, which farmers can refer to for better results.
First, black film is ideal for growing summer radishes, cabbages, spinach, autumn cucumbers, and late tomatoes in areas with heavy weeds or during hot seasons. It suppresses weed growth and regulates soil temperature effectively.
Second, purple film is commonly used in greenhouses and plastic tunnels during winter and spring for cultivating solanaceous crops and leafy vegetables. This film helps improve both the quality and yield of the produce.
Third, blue film is especially beneficial for rice seedling production, as it promotes strong, short-stemmed seedlings. It is also suitable for vegetables, cotton, peanuts, strawberries, kidney beans, eggplants, peppers, tomatoes, and melons, helping control weed growth.
Fourth, yellow film has been shown to be effective in delaying bolting in celery and lettuce while promoting stronger growth in beans. When used on cucumbers, it encourages more flowering and increases yield by 1 to 1.5 times.
Fifth, red film enhances sugar content in sugar beet, improves carrot root length, and increases the size and yield of amaranth leaves. It also advances the harvest period.
Sixth, green film reduces visible light while increasing green light transmission. This limits weed photosynthesis under the film, effectively suppressing their growth. It offers a moderate level of moisture retention compared to transparent and black films, making it ideal for crops like strawberries, melons, tomatoes, eggplants, and peppers.
Seventh, silver-gray film is widely used for summer and autumn crops such as vegetables, melons, cotton, and tobacco. It helps prevent diseases, repel pests like mites and whiteflies, and improves overall crop quality.
Eighth, silver reflective film is primarily used in greenhouse vegetable cultivation. By hanging it on the north side of the greenhouse, it enhances lighting conditions, leading to better plant development.
Ninth, silver and black double-sided film combines the benefits of both silver-gray and black films. The silver side reflects light, while the black side suppresses weeds and retains moisture. It is particularly useful for summer and autumn crops that require disease resistance and heat tolerance.
Tenth, black and white two-color film is ideal for heat-resistant cultivation during summer and autumn. The white surface reflects sunlight, lowering ground temperature, while the black underside prevents weed growth and retains moisture. It is especially effective for cool-season crops like radishes, cabbages, and lettuces, allowing them to thrive even in high temperatures.
By choosing the right colored agricultural film based on the crop and season, farmers can optimize growth conditions, reduce pest problems, and achieve higher productivity. These techniques are increasingly being adopted worldwide to support sustainable and efficient farming practices.