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Application of polylactic acid fiber in agriculture field
source：www.03559659.cn | Release time：2024-12-121. Agricultural covering materials
Agricultural film: Polylactic acid fiber can be used to manufacture agricultural film. Traditional polyethylene agricultural film remains in the soil after use and is difficult to degrade, causing "white pollution". And polylactic acid agricultural film has good biodegradability, which will degrade into carbon dioxide and water after a certain period of time in natural environment. Its degradation cycle can be adjusted according to the fiber composition and the control of processing technology, generally between a few months to a few years, which can effectively reduce plastic residues in the soil. For example, in some vegetable planting bases, polylactic acid agricultural film is used to cover vegetable seedlings, which not only provides insulation and moisture retention, but also gradually degrades after the vegetable growth cycle ends, without the need for manual cleaning of residual film like traditional agricultural film.
Horticultural coverings: Polylactic acid fibers can be processed into coverings for horticulture, such as covering materials for flower beds and flower beds. It can prevent the growth of weeds and reduce their competition for nutrients and water with flowers and vegetables. At the same time, it can maintain soil moisture and provide a relatively stable growth environment for plant roots. For example, in flower cultivation, polylactic acid fiber cover can cover the soil surface, slowing down the evaporation rate of soil moisture, allowing flower roots to better absorb water, thereby promoting flower growth.
2. Agricultural packaging materials
Seed packaging: Polylactic acid fiber has good flexibility and certain strength, and can be used to make seed packaging bags. It can protect seeds from external physical damage, while also having good breathability, and will not cause seed mold due to overly sealed packaging. Moreover, after sowing, the packaging bags can naturally degrade in the soil and will not become garbage like traditional plastic packaging. For example, some flower seeds are packaged with polylactic acid fiber material, which can keep the seeds in good condition during storage and transportation. After sowing, as the seeds germinate and grow, the packaging bags gradually decompose.
Agricultural product packaging: Polylactic acid fiber is used for packaging agricultural products, such as fruits and vegetables. It can provide a certain buffering effect to prevent agricultural products from being damaged by collisions during transportation and storage. And due to its biodegradability, it will not generate a large amount of difficult to dispose of waste after use like traditional plastic packaging. For example, in the packaging of strawberries, the packaging box made of polylactic acid fiber can protect the strawberries from compression, and after the strawberries are consumed, the packaging box can naturally degrade in a suitable environment.
3. Agricultural textiles
Insect proof net: Polylactic acid fibers can be woven into insect proof nets for agricultural pest control. This insect proof net can effectively prevent pests from entering crop planting areas and reduce the use of chemical pesticides. Meanwhile, the polylactic acid insect proof net can naturally degrade after use, avoiding the long-term pollution caused by the disposal of traditional insect proof nets to the environment. For example, in organic vegetable plantations, polylactic acid insect nets are widely used, which can block common pests such as aphids and diamondback moths, ensuring the quality and safety of vegetables.
Crop support material: Polylactic acid fiber has a certain strength and can be used to make support materials for crops, such as brackets for vine plants such as tomatoes and cucumbers. Compared with traditional bamboo or plastic scaffolds, polylactic acid fiber scaffolds can naturally degrade after use and will not be left in the fields, making it easier to dispose of agricultural waste. For example, in some modern greenhouse agriculture, scaffolds made of polylactic acid fibers provide stable support for tomato plants, and gradually decompose after the harvest season, without affecting subsequent planting.
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