What is biological mulch?

Question 1: What harm can ordinary mulch film cause? 1. It cannot be decomposed naturally when touched, causing so-called "white pollution" that harms the human living environment;

2. It cannot be burned, as it will produce Toxic substances, carcinogenic. Seriously pollutes the environment;

3. 1) Using biological materials can save the use of oil and save energy;

2) It is degradable and does not produce "white pollution";

3) Because it comes from natural crop fertilizers (which can increase crop yields by 20), the amount of chemical fertilizers used is reduced. Indirectly reducing pollution from chemical fertilizers and the production of chemical fertilizers.

(Professional answer, request for additional points)

Question 2: How about degradable mulch film? I am a mulch film manufacturer in Junan, Shandong Province. I have a 20-year history of agricultural mulch film production and sales locally. It is the birthplace and distribution center of mulch film. Degradable mulch film is a major development trend in agricultural mulch films. The introduction of degradable mulch film is as follows for your reference

What is degradable mulch film (photo, biodegradable mulch film)?

Degradable mulch film (light, biodegradable mulch film) refers to exposure to natural environmental conditions, light, heat, water, oxygen, pollutants, microorganisms, insects, wind, sand, rain and mechanical forces, etc. A new type of mulch film that causes degradation under the combined effect.

Advantages of degradable mulch film (light, biodegradable mulch film)

1. Degradable mulch film (light, biodegradable mulch film) is based on the temperature, precipitation, sea humidity and other natural conditions and crops in the area of ??use. The target coverage period is customized according to the user's requirements, the coverage time is controlled, and it automatically degrades after the coverage time is met.

2. The degradable mulch film (light, biodegradable mulch film) automatically degrades after use without any residual film. There is no need to pick up the film, saving labor costs.

3. There is no secondary pollution after degradation of degradable mulch film (light, biodegradable mulch film).

4. The use of degradable mulch film (light, biodegradable mulch film) is the same as that of ordinary mulch film.

Degradation process of degradable mulch film (light and biodegradable mulch film)

1. Degradable mulch film (light and biodegradable mulch film) is divided into two stages: covering period and degradation period. Covering period It is the time when crops need to be kept warm, moisturized, and moisturized, that is, the time from when traditional mulch film is laid to when it can be picked up.

2. When the degradable mulch film (light, biodegradable mulch film) enters the degradation period, the overall color of the film surface becomes darker, the transverse and longitudinal tensions weaken, and irregular cracks begin to appear on the film surface.

3. As the degradation period of degradable mulch film (light and biodegradable mulch film) prolongs, the film surface becomes sugar-coated. Due to the difference between the soil surface and the internal environment of the soil, the mulch film buried inside the soil is less dense than the soil surface. The degradation rate of mulch film is slightly slow, but it has no impact on agronomic activities and does not need to be recycled.

Question 3: Biodegradable biofilm. Research, development and application of controllable biodegradable film. Currently, the main types of controllable biodegradable film developed and applied at home and abroad include: photodegradable film, biodegradable film and light and biodegradable film.

Photodegradable mulch film. The method of adding photosensitizer to synthetic resin is mainly used to degrade it. This technology was developed by British G. SC0tt and Israel D. Pioneered by Gilead and used in the UK, Israel and South Africa. The former Soviet Union and Japan have also carried out this research. my country began to develop photodegradable mulch films in the early 1980s, adopting a process route similar to that of foreign countries, and has now reached the level of large-scale production. However, because the part of the photodegradable mulch film buried in the soil does not degrade; after degradation, the fragments cannot easily continue to be pulverized or assimilated into the soil, and the problem of contaminated soil has not yet been fundamentally solved. In addition, the cost is higher than that of ordinary membranes, which limits the promotion and application.

Biodegradable mulch. Mulch that can be degraded by microbial action (lower level biodegradable mulch).

This kind of mulch film is mainly made of natural polymers. For example, Japan uses aqueous solutions of cellulose and chitin to make films. Germany uses amylose or high amylose and other natural polymer materials to make films. my country has also used cellulose to make films. However, although these films can be degraded, they all have problems such as difficult processing, poor mechanical properties and water resistance, and they cannot be promoted and applied at all.

Light and biodegradable mulch (also known as double degradable mulch). Microbial sensitive substances (such as starch) are mixed with synthetic resin, and a photosensitizer is introduced into the system. After the induction period, the synthetic resin is degraded into low molecular compounds through the sensitization effect of the photosensitizer. The added microbial sensitive substances are naturally degraded by microorganisms. At the same time, because the microorganisms gathered on the product can act on the generated low molecular compounds, the polymer is eventually assimilated into the soil. The low-density polyethylene-starch-plasticizer-photochemical degradation agent mulch film launched by Griffin in the UK in 1988 falls into this category. Several companies in the United States and Canada have successively started industrial production based on this patent. The photo- and biodegradable mulch film is completely degradable, which not only ensures photodegradation of the illuminated part, but also allows the buried part to be degraded through the combined effects of biodegradation and thermal degradation to an extent that does not affect farming in the next season, and can be maintained under the influence of chickens. It degrades into non-polluting substances every year. Compared with ordinary mulch films and photodegradable mulch films, photo- and biodegradable mulch films have made great progress in reducing the hazards of residual films, but this technology, like other new technologies, should be further improved in application.

Question 4: What is the biofilm of Ronying Project? There are many differences between cells in biofilm and free cells:

Bacteria in biofilm are resistant to antibiotics, hydrogen peroxide or Detergent resistance is up to 400 times higher than that of free cells.

Through two-dimensional protein electrophoresis, it was found that bacteria in biofilms may express 40 different proteins than free cells.

Bacteria in biofilms can remain alive (dormant) for long periods of time without dividing.

Biosynthesis in biofilms produces more polysaccharides secreted out and undergoes different secondary metabolisms.

Bacteria in biofilms respond more rapidly to changes in external environmental conditions (such as pH, ion concentration, osmotic pressure, viscosity, nutrients, gas exchange).

Question 5: Is the effect of biodegradable agricultural mulch film the same as that of ordinary ones, and what is the price? I have used biodegradable film. On the surface, it seems that the price is a bit expensive, but the performance is okay, but you have to consider it comprehensively. Because we are planting in large areas, if we use ordinary plastic agricultural mulch, we will hire people to recycle the plastic waste later. At the same time, we have to transport and centrally process it, which is not easy to handle. Moreover, if the plastic waste is not cleaned up, it will affect the land. If the planting quality in the coming year is not good, you will need to add fertilizer. It depends on how you look at it. I bought the Kaiyuan Chuangyi product at that time and conducted tests and cost accounting. It is indeed okay

Question 6: Mulch film What is the role of mulching technology in crop production? Film mulching technology has the functions of increasing temperature, retaining water and fertilizer, improving soil physical and chemical properties, increasing soil fertility, inhibiting weed growth, mitigating diseases, and can also reduce humidity in the case of continuous rainfall. Functions, thereby promoting plant growth and development, early flowering and fruiting, increasing yield, reducing labor costs, etc.

Question 7: Does junior high school biofilm covering inhibit respiration or promote respiration? In addition to the vitality of the seeds themselves, the germination of seeds must also have suitable conditions, with sufficient water and suitable temperature. They can germinate under sufficient air. Some seeds also need light conditions to germinate. The temperature in early spring is low and the seeds are unstable. The germination of seeds requires a suitable temperature. After sowing in early spring, they are often covered with plastic film to improve the soil quality. The temperature can promote the germination of seeds and promote early emergence.

Question 8: When sowing peanuts in spring, they are often covered with mulch film. Why? From a biological perspective 1. Insulate and increase temperature and promote the decomposition and release of soil nutrients

2. Moisturizing and improving survival rate

In addition to irrigation, the soil moisture in the fields mainly comes from rainfall. After covering with the film, on the one hand, the evaporation of soil moisture is reduced due to the barrier of the mulch film, which slowly dissipates and forms water droplets in the film and then falls to the soil surface, which reduces the loss of soil moisture and plays a role in preserving soil moisture. On the other hand, the mulch film can also prevent a large amount of rainwater from entering the ridge body when the rainfall is too heavy, and can prevent waterlogging.

Question 9: Has anyone used biodegradable agricultural mulch film? What is the effect? ??Will it result in loss of money? I am a mulch film manufacturer in Junan, Shandong. The local area has a 20-year history of producing and selling agricultural mulch films. It is the birthplace and distribution center of mulch films. Degradable mulch films are a major development trend in agricultural mulch films. The introduction of degradable mulch films is as follows for your reference. Degradable mulch film (light, biodegradable mulch film)? Degradable mulch film (light, biodegradable mulch film) refers to the material that is exposed to natural environmental conditions, such as light, heat, water, oxygen, pollutants, microorganisms, insects, wind, sand, rain and A new type of mulch film that causes degradation under the combined action of mechanical forces. Advantages of degradable mulch film (light, biodegradable mulch film) 1. Degradable mulch film (light, biodegradable mulch film) is based on the natural conditions such as temperature, precipitation, humidity and other conditions in the area of ??use. For the target coverage period of crops, the formula is customized according to the user's requirements, the coverage time is controlled, and it automatically degrades after the coverage time is met. 2. Degradable mulch film (photo and biodegradable mulch film) automatically degrades after use without residual film, no need to pick up the film, saving money Labor cost. 3. There is no secondary pollution after degradation of degradable mulch film (light, biodegradable mulch film). 4. The use method of degradable mulch film (light, biodegradable mulch film) is the same as ordinary mulch film. Degradation of degradable mulch film (light, biodegradable mulch film) Process 1. Degradable mulch film (light, biodegradable mulch film) is divided into two stages: covering period and degradation period. The covering period is the time when crops need to be kept warm, moisturized, and moisturized, that is, the time from the beginning of traditional mulching film to the time when the film can be picked up. 2. When the degradable mulch film (light, biodegradable mulch film) enters the degradation period, the overall color of the mulch film surface becomes darker, the transverse and longitudinal pulling forces weaken, and irregular cracks begin to appear on the film surface. 3. Degradable mulch film (light, biodegradable mulch film) As the degradation period prolongs, the film surface becomes sugar-coated. Due to the difference between the soil surface and the internal soil environment, the mulch film buried inside the soil degrades slightly slower than the mulch film on the soil surface, but it has no impact on agronomic activities and does not need to be recycled.