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Prospects for two key products of agricultural plastics

Prospects for two key products of agricultural plastics

Agricultural film is a kind of product used in agricultural production to protect plant water loss. With the advancement of science and technology, the demand for agricultural film is getting higher and higher, and various new films are emerging. In economically developed countries, the amount of agricultural plastic film accounts for more than 50% of the total amount of all agricultural high polymer products.

Agricultural film (mainly PE) is an important agricultural production material after seeds, fertilizers and pesticides. Its application has brought about a revolution in agricultural production and made important contributions to agricultural efficiency and farmers' income. Agricultural film mainly includes modern agricultural covering materials such as shed film and mulch film, forage film, sunshade net and insect net. It is understood that China's agricultural film production has ranked first in the world. In 2009, the output of agricultural film reached 960,600 tons, 1.6 times that of the rest of the world. In 2013, it almost doubled compared with 2009, reaching 1,873,600 tons. At present, the annual usage of various greenhouse films in China is about 1.5 million tons, and the annual renewal demand is about 700,000 tons. Commonly used films are polyvinyl chloride film, polyvinyl chloride non-drip film, polyethylene film, polyethylene non-drip film, polyethylene multi-functional composite film and EVA multi-functional composite film. The average area covered by plastic film in China is about 667,700 hectares per year. At present, the area covered by plastic film has reached more than 13 million hectares. The actual consumption of plastic film is about 450,000 tons per year, ranking first in the world. The area of farmland covered by plastic film in China is about 37 million hectares. With the rapid development of agricultural science and technology, the demand for mulch will continue to grow.

At present, the national high-grade agricultural film only accounts for 2% of the total output of agricultural film, the mid-range agricultural film accounts for 20%, the low-grade agricultural film accounts for 78%, the low-grade agricultural film products supply exceeds demand, and the developed countries' high-end products account for 20%, and the mid-range agricultural film accounts for 20%. 50%, low-grade agricultural film products only account for 30% of the horizontal distance. Modern agriculture is developing towards intensification, industrialization, internationalization and specialization. The layout of China's agricultural industry will also be regionalized and characterized. The industrial center will continue to develop into a dominant production area, and the facility structure will become larger and larger. Intelligent. At the same time, China has a continental monsoon climate and is suitable for the development of facilities for gardening. Diversification of cultivation and horticulture will become a new growth point for the horticultural industry. By 2014, the area of horticultural facilities in the country will increase to 3 million hectares, the proportion of functional shed film will account for more than 40% of the annual sales volume of shed film, and the area covered with plastic film will be expanded to More than 20 million hectares, the annual consumption of mulch film will increase to about 780,000 tons; the area of special sheds for animal husbandry and aquatic products will be expanded to about 100,000 hectares, and the annual demand for ammoniation, silage and film will reach 300,000 tons.

With the continuous expansion of the agricultural film market and the demand of the industry, a single film of PE has been continuously developed from the original single PE film, mainly including high-energy series agricultural film, rare earth-transfer agricultural film, high-efficiency dimming ecological film, and more. Functional degradable liquid film, modified agricultural plastic greenhouse film, new environmentally friendly liquid agricultural film, paper film and so on.

The prospect of agricultural film in the development of modern agriculture

With the rapid development of computer technology, communication technology, microelectronics technology and other information technologies and the rapid application of systems in agriculture, in the process of transforming Chinese agriculture into modern agriculture, information technology is more fully and effectively developed and It plays an increasingly important role in utilizing agricultural information resources, enhancing agricultural competitiveness, and promoting the sustainable development of agricultural economy. At present, China's agricultural film market is showing an accelerated development trend, the application range is gradually expanding, and the promotion and use of high-grade functional films has become a climate. The structure of the shed film product will be developed into a multi-layer composite, with high performance, high heat preservation, high strength, long life and continuous drip period, anti-corrosion period, light-conversion period, dust-proof period and anti-bacterial period. The direction of integration will be developed; the film will develop to the functions of moisture retention, warming, weeding and insect control; special agricultural film for different varieties will also develop. According to reports, more than half of the country's suitable agricultural film cover area is still blank; the functional film only accounts for 30%, while foreign countries reach 80%; high and medium-grade agricultural film output can not meet the market demand. It can be seen that the development prospects of China's agricultural film industry are very broad and the market potential is huge.

Key issues that need to be addressed urgently, recycling needs to be focused on R&D

With the large-area application of mulch and drip irrigation technology in field crops, recycling has become an urgent problem to be solved. The rapid development of agricultural mulch film and drip irrigation water-saving market has driven the use of two products very large. The mulch and drip irrigation belts are basically one-year products. If they are not recycled in time, the impact on crops will be extremely serious, which will inevitably affect the use in the coming year.

The recovery of agricultural film has attracted more and more attention in recent years. However, due to the small amount of recycling or the inaccuracy in the manual recycling process, the residual film buried in the ground has become an important unfavorable factor affecting the soil quality of the soil and the subsequent crop growth. How to solve the problem of recycling and recycling of agricultural film is a problem that has already begun to be paid attention to at the national level, and begins to discuss new standards and development directions. The direction that is currently being explored on the market includes increasing the film thickness to achieve reliable recycling and avoiding residual film formation. The other direction is to use a degradable mulch to reduce the environmental impact of residual film.

If the drip irrigation belt remains in the soil, it will also affect the soil structure and affect the growth of the crop. The recovery and reuse of the drip irrigation belt is an important measure to reduce the investment in drip irrigation and save costs, and it also has positive significance for soil protection. At present, the recycling of drip irrigation belts is mainly manual recycling, the labor volume is large, the operation efficiency is low, the corresponding recovery cost is increased, and the recovered coils are loose, which is not conducive to transportation and storage. Resolving the recycling of drip irrigation belts is the key to the long-term and continuous application of drip irrigation belt technology. It is also a major issue related to the development of land productivity and the benefit of future generations.

Agricultural PVC pipe needs to be standardized

In the plastic pipe, the amount of agricultural PVC pipe has been far ahead, mainly used in the drip irrigation and agricultural film laying, as the main water supply pipe, buried underground, requires a 50-year warranty period, while drip irrigation pipe and agricultural film as a one-year period The period of use requires continuous recycling and utilization to avoid environmental pollution.

It is worth noting that there are still many problems that the PVC pipe industry urgently needs to solve. Due to the relatively mature PVC pipe technology, in recent years, there has been little investment in product innovation, and relatively few new products. There are many general products in the market, and there are few high-tech and high-value-added products. The similar general-purpose products and medium-grade low-end products account for the majority. Industry and product promotion, popular science and other aspects are not in place, affecting the rational use of plastic pipes and the expansion of the scope of application. The market is not standardized, and some companies have poor quality products, which affects the healthy development of the industry. Some purchasers are not the end users of the products, do not pay attention to the brand and quality, and often the products with low price difference occupy the largest market share. PVC-U pipes are particularly serious. In the cost of PVC-U pipelines, material costs often account for about 70%. Some companies reduce product costs by reducing wall thickness and increasing the amount of calcium carbonate added, resulting in poor product quality, damage to users' rights and interests, and corruption. The image of the industry, so the need to improve industry management and rectification.

Agriculture is the primary industry related to the national economy and the people's livelihood. The plastic products for agriculture contribute to the increase of agricultural production, anti-season sales and the improvement of agricultural products quality. In the future, the agricultural application market will continue to bring huge development opportunities for the plastics industry. Producing high-quality products and providing high-quality and reliable products for the agricultural market is not only the fundamental prerequisite for the sustainable and long-term stable development of the agricultural plastics industry, but also the conscience of every manufacturer or merchant.

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