Why Use high-strength Thicker Plastic Mulch Film in agricultural production

Like fertilizers, pesticides and seeds, mulch is an important agricultural material, which plays an important role in "enriching rice bags and filling cabbage seeds", increasing agricultural production and increasing farmers' income. However, since the plastic film is a high-molecular compound polyethylene, which is a non-decomposable plastic, if it is not recycled in time after use, it will damage the soil structure and affect the growth of the root system of crops; the residual film left in the field will be blown to the front house by the wind The back, fields and treetops will affect the appearance of the village. Therefore, strengthening the scientific use and recycling of plastic film to prevent and control the "white pollution" of farmland residual film is of great significance for promoting the green development of agriculture.

Plastic film use and recycling laws stipulate that violations should be punished

Article 88 of the Law of the People's Republic of China on the Prevention and Control of Soil Pollution: In violation of the provisions of this Law, the producers, sellers and users of agricultural inputs fail to promptly recycle the packaging waste or agricultural films of agricultural inputs such as fertilizers, or If the pesticide packaging waste is not recycled in a timely manner in accordance with the regulations and handed over to a specialized agency or organization for harmless treatment, the competent agricultural and rural department of the local people's government shall order it to make corrections and impose a fine of not less than 10,000 yuan but not more than 100,000 yuan; If the person is an individual, a fine of not less than 200 yuan but not more than 2,000 yuan may be imposed.

Agricultural Mulch Film Has Become A Serious Pollution?

 Plastic film mulching is a measure commonly used by farmers and the surface is covered with agricultural film. Since the end of the 20th century, the agricultural land mulching technology has been gradually promoted, and it has become one of the main ways to increase the yield of crops such as grain, cotton, oil and vegetables. As an important agricultural product, mulch film plays an extremely significant role in agricultural development. In addition to raising ground temperature and maintaining water and fertilizer, it also has the effect of preventing pests and weeds. Farmers generally believe that the good use of plastic film can generally increase the production of agricultural products by 30% to 50%. However, the residual amount of mulch film in the soil accumulates year by year, which seriously damages the soil environment of cultivated land and restricts the growth of crops. The mulch film flows into the river with water or is burned, which will cause water pollution and air pollution. Therefore, regarding mulching, if you don't care about it in the early stage, the later treatment may also be a big trouble!

And despite the effective prevention and control measures of waste plastic film, there are still many people who take it seriously. The recycling of waste plastic film cannot bring direct economic benefits to farmers. The scattered recycling sites in the village do not recycle waste plastic film, and some farmers still buy plastic film with a thickness of less than 0.01 mm in order to reduce costs. Coupled with the high labor intensity of picking, most farmers will directly plough the waste plastic film into the soil, or discard it in the fields and ditches, resulting in heavy use and light recycling.

Mechanically picking up mulch is also a threshold. In agricultural production, the thin agricultural mulch (usually 0.005-0.008 mm used by local farmers) is broken after one production cycle, making it difficult to pick up, and the cost of manual recovery is high. There are three main problems in mechanically picking up mulch:

1) Farmers have insufficient awareness and enthusiasm for residual film recycling, and are unwilling to increase production costs to purchase residual film recycling machines for pick-up and recycling;

2) In Jiaxiang County, the plots with a larger planting area of ​​mulched crops have high soil viscosity, and it is difficult for general machinery to solve the problem of separation of mulch and soil.

3) There is a lack of professional prevention and control teams in rural areas. Some public welfare positions are arranged in the villages, which are specially responsible for picking up plastic film.

For plastic film producers and operators, they are more willing to produce plastic films with a thickness of 0.006 to 0.008 mm. High-standard plastic films will increase production costs. For plastic film users, standard plastic film will increase the purchase cost and the cost of manual purchase later. Therefore, the promotion of standard plastic film is more difficult. The application prospect of fully biodegradable mulch film is great, but the technology is immature, which cannot accurately guarantee the demand for mulch film during the growing period of crops, which leads to the early degradation of biodegradable film during the growth period and a large reduction in crop yield; the price of fully biodegradable mulch film is also three times that of ordinary mulch film. , farmers' production costs increase, and biodegradable membranes are difficult to promote.

Therefore, in such cases, it is necessary to actively and efficiently use newspapers, TV, Internet and other media to expand the scope of green use of plastic film, and to publicize to the society and farmers the serious harm caused by discarded agricultural residues to crops and the environment of cultivated land; counties and towns should also combine science and technology. Training meetings are held separately for household entry and farmer training. Strengthening awareness and increasing supervision is the only way to prevent such phenomena.

How to recycle waste agricultural mulching film

The application of agricultural plastic film has brought a revolutionary breakthrough in saving water and improving crop yield. However, with the rapid popularization of plastic film covering technology, some waste agricultural film has not been recycled in time, becoming white pollution in the field, which constitutes a potential for the green development of agriculture. threaten.

Xinjiang is the region with the largest mulching area and the largest amount of mulching film in China. Nearly 1 million tons of residual film are collected every year and stacked at the recycling site. How to reuse it better and faster is still a difficult problem.

The China Cotton Research Institute has been concentrating on the elimination of mulch film residues in Xinjiang farmland for the past five years, and has successfully developed a set of solutions.

The production line of the whole program is energy-saving and environmentally friendly without using water in the production process, and there is no need to separate the straw, cotton, weeds and other debris in the mulch residue. One production line can easily solve about 10 tons of mulch residue per day.

Strengthen the recycling of waste agricultural mulching film and remove white garbage in the field

Advantages of the solution for the recycling and reuse of agricultural residue film

1. There is no need to rinse the residue of the plastic film, and the production process basically does not use water, saving water resources.

2. There is no need to separate the straw, cotton, weeds and other debris in the mulch residue.

3. It has a wide range of applications and can produce a variety of finished products, such as trays, trash cans, well covers, cotton poufs, floor tiles, etc.

4. The safety protection is high, and the cover is installed on the outside of the equipment to ensure the safety in the production process

5. Energy saving and environmental protection, no waste water and waste gas will be produced in the production process, effectively reducing environmental pollution.

Raw material and finished mulch film display

All recycled waste agricultural film can be processed into plastic trays, cellar covers, floor tiles, trash cans and cotton piers through machines, and then according to the quality of registration, various products can be made and sold on the market.

This trip to Xinjiang aims to promote and strengthen the recycling and utilization of waste agricultural film, promote the green, low-carbon and high-quality development of agriculture, and prevent and control agricultural pollution. The next step will be to accelerate the recycling of waste agricultural film, continuously improve the level of resource utilization of agricultural waste, protect the agricultural ecological environment, and promote the green, low-carbon and sustainable development of agriculture in the region.

Turn Straw Into Mulch - Biodegradable Mulching Film Is Greener and Safer

 "Look, the mulch under the soil is gone, and there is still a little mulch left outside, and it will shatter when you pinch it."

During the summer time, in the farmland of Changzhou City, Jiangsu Province, Cai Dongsheng, chairman of the Changyu Red Taro Professional Cooperative, happily told reporters while turning the soil with a hoe.

The picture shows that in June this year, the paddy field of Jiangsu (Kunshan) Modern Agriculture (Rice and Wheat) Science and Technology Comprehensive Demonstration Base used straw degradable plastic film.

"Our cooperative has planted more than 5,000 mu of red taro. In July of last year, it was time to hire someone to remove the mulch manually. It took at least 4 working hours per mu, which is about 320 yuan. Covered with a layer of soil." Cai Dongsheng said with emotion, "This year, the new biodegradable mulch film developed by the Jiangsu Academy of Agricultural Sciences is used, and there is no need to manually remove the film, and there is no need to worry about 'white pollution'."

Not only the red taro in Changzhou, but now, tomatoes, garlic and sweet potatoes in Jiangsu, as well as potatoes in Ningxia, and melons in Hainan... all use this biodegradable plastic film.

How To Choose Mulch Film for Vegetables?

Mulch film is a plastic film used for covering farmland. Almost all vegetable planting in facilities is covered with mulch. Even in open-field vegetable planting, mulching films are widely applied. There are many benefits of mulching. It can maintain fertilizer, keep moisture and increase temperature so as to increase yield. In the greenhouse, it can effectively reduce humidity and greatly reduce the occurrence of vegetable diseases and insect pests.

Most farmers have realized the fact that there are many benefits of covering mulch for growing vegetables. But there are too many types of mulch on the market, including our common common transparent mulch, black mulch, silver-black mulch, and reflective mulch. So what is the point of using various plastic films in planting vegetables, and how should we choose them in actual production, so as to avoid unnecessary economic losses caused by wrong selection and misuse?

Characteristics of various mulching films.

Let's talk about the characteristics and use methods of various mulching films.

1. Ordinary translucent mulch

This type of mulch film is the most familiar and used the most. The material is mainly polyethylene material. The biggest advantage is to increase the ground temperature. After covering, it can increase the temperature of the topsoil of about 5cm by 5-6 °C. Due to the increase of ground temperature, it can make Fruit vegetables, melons, and legumes should be marketed at least 5-10 days earlier than open field vegetables. In summer, the soil temperature under the film can reach 60 ℃, which can be used for soil disinfection. The disadvantage is that it is easy to breed weeds, and appropriate weeding measures need to be adopted.

It is precisely because of the good warming effect of this plastic film that it is mainly used for the production of solanaceous vegetables in early spring and winter vegetables. If it is used in other seasons, it will be detrimental to root growth due to the high ground temperature.

This mulch film also has the effect of preserving fertilizer and improving soil structure, because after covering with mulch film, the volatilization of nitrogen in the soil is reduced, the rainwater is prevented from being washed away, and the soil is kept in a better loose state.

2. Black mulch

In recent years, more and more black plastic film is used in vegetable production. Everyone must understand the advantages and disadvantages of black plastic film, and do not use it wrongly. Black mulch film is generally produced by LDPE, which is relatively thick and has a large tensile force, and can be used for at least two or three crops. One of the main features of black mulch is its good weeding effect. It is because of this feature that it is used more in the production of strawberries, watermelons and potatoes. During the growth of strawberries, a large number of weeds will grow, and herbicides cannot be sprayed, hoeed or pulled. Grass is more unrealistic, so the best choice is to use black mulch.

Another feature of black mulch film is that the soil temperature will not increase significantly after mulching and even cool down by 2-3 ℃. The data shows that in the planting of summer and autumn watermelon, the use of black plastic film can increase the yield by about 30% compared with the ordinary light-transmitting plastic film.

3. Silver black mulch

Silver-black mulch is also called reflective film. One side is silver and the other is black. It is mainly made of PE material. This mulch has strong functionality and high price. It is mainly used for plots with many pests, especially aphids. When using, the silver side is facing up and the black side is facing down. The silver side is reflective and can avoid aphids and thus reduce the spread of viruses. The black side can reduce the low temperature by 4-6°C.

Silver black mulch film is generally used in summer vegetable production to provide heat-proof cultivation for vegetables and form a good growth environment. It is called the umbrella of summer melon and vegetable cultivation.

Therefore, in the cultivation of vegetables or other crops, we use different mulches according to our own demands. If the pest damage is serious, it is best to use the silver-black mulch, and the grass damage is particularly serious. Mulching is also the cheapest.

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Clean Up Waste Agricultural Mulch Film

 Recently, prosecutors from the Procuratorate of Wenling City, Zhejiang Province came to the field together with the staff of the local administrative functional departments to check the recycling of much film. A farmer who is participating in the recycling of agricultural film said with a smile: "It is great to collect agricultural mulch and get subsidies!"

Wenling City has abundant natural resources and developed agricultural production. Commercial agricultural production is inseparable from agricultural mulch film. At the beginning of this year, the Wenling City Procuratorate found in the course of performing its duties that discarded agricultural film was piled up on both sides of the fields and ditches, which were not recycled in time. In response to this problem, since March, the Wenling City Procuratorate has carried out a special supervision campaign on agricultural non-point source pollution.

On the basis of full investigation and evidence collection, the Wenling City Procuratorate issued an administrative public interest litigation pre-litigation procuratorial suggestion to the functional department, suggesting that it take effective measures to strengthen the supervision and management of the use and recycling of agricultural materials such as agricultural mulching films and fertilizers. After receiving the procuratorial suggestion, the functional departments attached great importance to it, combined with the investigation of outstanding ecological and environmental problems in the city, and carried out the "hundred-day tackling" action. In April this year, Taizhou took the lead in starting the recycling and disposal of waste mulch film.

Since the standardized recycling of agricultural film has not been adopted before, the agricultural film is buried very deep, and some are even accumulated in the river, which needs to be manually checked and cleaned up by town and village. Fortunately, the work of "digging three feet of land" has paid off. Since the beginning of April this year, Wenling City has cleared more than 600 tons of discarded agricultural film from four townships. At the same time, hundreds of tons of discarded mulch film were uniformly transported to a local renewable resource utilization enterprise.

It is understood that most of the agricultural film components are polyethylene compounds. Some agricultural films with relatively good quality and low degree of natural decomposition will be turned into recycled plastic particles after being cleaned and pulverized by hot-melting, extrusion and other processes. These black recycled plastic particles can be turned into plastic daily necessities through processing. As for the poor quality agricultural film, it will also be screened out after cleaning, and transported to the local thermal power station, where it will be fully burned to use the waste heat.

"After the historical stock is cleaned up, we will recycle the agricultural film according to the principle of 'who uses it, who recycles'." The person in charge of the relevant functional department told the prosecutor. In the follow-up, functional departments will also explore the implementation of closed-loop management measures, use the digital platform for agricultural resources distribution to build a comprehensive management platform for recycling, collect information on the whole process of recycling, and gradually establish a closed-loop management system with traceable data and accountability, and agricultural investment "progress". "Sell-Use-Return" responsibility sharing mechanism for the entire industry chain.

What Is Agricultural Mulch?

What Is Agricultural Mulch?

Mulching technology is a breakthrough invention made by mankind in the field of agriculture. Invented and applied by Japanese scientists in the 1950s, it was first used for strawberry production. In June 1978, Zhu Rong, the then deputy minister of the Ministry of Agriculture, after visiting Japan and returning to China, introduced the Japanese plastic film mulching technology to the relevant units, and requested to carry out relevant research, thus starting the research and application of China's plastic film mulching technology.

The mechanism of action of plastic film mulching is to effectively improve the growth and development conditions of crops, resist adverse environments, and make full use of Limited light, heat, water and nutrients promote the germination of seeds into the soil, accelerate the growth of roots and shoots, and prolong the effective growth period, so as to obtain the good effects of early maturity, high yield and high quality. Under normal circumstances, mulching with plastic film can increase the average ground temperature during the crop growth period by 3-6°C, increase the accumulated temperature by about 300°C, increase the soil water content of 0-20 cm by 2.6-3. improve.