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1. The difference between black and white mulch Black mulch film: The light transmittance is only 10%, which can effectively inhibit the growth of weeds. Black mulch can inhibit soil warming and is suitable for summer carrots, cabbage, spinach, autumn cucumbers, etc. Black mulch also has drawbacks, which are difficult to degrade and have a certain impact on the environment. White ground film: It has good light transmittance and can increase the ground temperature by 2-4 ℃ after covering, with a wide range of applications. It is mainly used for vegetables, melons, cotton, and many other crops. Due to the good light transmittance of white mulch, weeds can fully carry out photosynthesis, so weed production is faster. 2. The use of mulch "Plastic film" is an important auxiliary technology for improving crop yield in agricultural production! It is used for ground covering to increase soil temperature, maintain soil moisture, maintain soil structure, prevent pests from attacking crops and diseases caused by certain microorganisms, and has the function of promoting plant growth. According to statistics, the temperature of soil covered with plastic film is 2-4 degrees higher than that of soil not covered, which can allow crops to germinate and grow in advance in northern areas. At the same time, plastic film mulching plays an irreplaceable role in maintaining soil moisture and inhibiting the growth of weeds

① Seasonal issues Generally, crops are planted in fields with early spring stubble in order to regulate the soil temperature and select white mulch. It can effectively increase soil temperature and germinate earlier. The crops planted are mainly cotton, corn, melons, etc. In winter, those with black mulch are generally planted in greenhouses, mainly to control the growth of weeds. ② Selection of planting crops For example, the cotton planted is mainly a field planting mode. The reason for choosing white film is to sow and germinate early. To achieve this goal, after the seedlings have grown up, there is basically no membrane matter. Black film planting is different. For example, when planting tomatoes in a greenhouse, black film is generally used. The reason is to control the growth of weeds, but also to maintain a small change in soil temperature. "And black mulch requires one kind of tomato to be used until the seedlings are pulled, otherwise it is just one kind of use.".

Basic understanding of commonly used membranes? In the planting industry, there is a lack of color for mulch, but we commonly use two types of mulch: black and white. Among them, the white film is also a transparent film, and the white film is also a colloquial expression form. But for which film to choose, the main thing is its use or which crop is more suitable? My explanation should be easy to understand, but in reality, the choice of plastic film applications is often followed by the flow, and I think there is nothing wrong with it. For two types of membranes, it is not possible to say which is good or which is not. It's about which film is more suitable for which crop or what major advantages that film has. In this case, it's a basic basis for selecting which film to use. ① Basic situation of white mulch As for white mulch, its biggest advantage is that it has relatively good light transmittance. The sunlight cannot be said to be 100% transparent, but it can also pass through 7 or 80%. This has a very good warming effect on the soil, generally increasing by 2-4 degrees. This is a very good choice for sowing in early spring. For example, planted cotton, corn, and melons. After discussing the advantages of white film, let's talk about the disadvantages of white film. It has excellent light transmittance, which will further promote the growth of weeds. Because the white film has good light resistance and high temperature, the photosynthesis of weeds will be more sufficient. Therefore, when using white film, this weed will grow better. ② Basic situation of black mulch film For black mulch, its light transmittance is very low, basically around 10%. This has a significant inhibitory effect on controlling the growth of weeds, due to low light transmittance and the inability of weeds to photosynthesis, they will not grow. The temperature of the soil covered with white plastic film does not change much, which is good for the transformation of soil organic matter. However, black film also has its disadvantages, especially its inability to raise the soil temperature, which is not conducive to germination after sowing. The biggest disadvantage of black film is that it is not easy to degrade, which requires technological progress to gradually improve.

Black mulch, as the name suggests, is pure black, and its light transmittance is very low. Therefore, it can not only effectively prevent the evaporation of water in the soil, but also maintain soil moisture. Moreover, it can also effectively inhibit the growth of weeds due to the lack of sunlight. However, black mulch also has drawbacks, such as its inability to transmit light, so soil warming is relatively slow, and the price is also more expensive than white mulch. Due to these advantages and disadvantages of black mulch, it is currently mainly suitable for cultivation on weedy plots, or in vegetable and orchard cultivation in high temperature seasons, especially for high temperature prevention cultivation in summer and autumn. This is due to the light impermeability of black mulch, which can create a good growth and development environment for crop roots and improve yield. For example, many professional growers use black mulch when planting vegetables such as summer radish, cabbage, spinach, autumn cucumber, and late tomato. Some orchards with lots of weeds will also be covered with black mulch.

White mulch is the most common type of mulch in agricultural cultivation, and to be precise, it should be transparent mulch. The main advantage of this type of mulch is that it is transparent, so it has a good thermal insulation effect. Using white mulch, the ground temperature rises relatively quickly, and it also has a good water retention and moisturizing effect. However, the disadvantages of white mulch are also relatively obvious, as it is transparent and easy to breed weeds. And in spring and summer, seedling scalding is also prone to occur due to the rapid temperature rise

Here, let's first understand the benefits of mulching with plastic film. Nowadays, mulching with plastic film technology is increasingly widely used, and it is commonly used in many crop cultivation, with many benefits. For example, mulching with plastic film can improve soil temperature, inhibit drastic changes in soil temperature, reduce water evaporation, and have a water retention effect. In addition, mulching with plastic film can also increase the light effect, inhibit the growth of weeds, and reduce the harm of diseases and pests. This is not only beneficial to the high yield of crops and field management, but also can promote the early sowing and marketing of some crops

Difference in temperature difference: the temperature difference between day and night for the white film is large, while the temperature difference between day and night for the black film is small. Different light transmittance: the light transmittance of the white film is 40%, the thermal radiation rate is 80-90%, the light transmittance of the black film is 1-3%, and the thermal radiation rate is 30-40%. Different weeding effects: White film can only inhibit the growth of weeds, while black film can leave weeds in an environment where photosynthesis is not possible, with significant weeding effects. 1. Difference in temperature difference 1. White film: Large temperature difference between day and night, low ground temperature at night. 2. Black film: small temperature difference between day and night, high ground temperature at night. 2. Different light transmittance 1. White film: The light transmittance reaches 40%, and the thermal radiation rate reaches 80-90%, which is close to the transparent plastic film. 2. Black film: Light transmittance is 1-3%, thermal radiation is only 30-40%, good air permeability, and the plant is not prone to premature aging. 3. Different weeding effects 1. White film: It has a certain inhibitory effect on weeds and is mainly used for flat covering, which can solve the problem of serious grass damage after covering transparent plastic film 2. Black film: It is almost opaque to light, and weeds are difficult to germinate and undergo photosynthesis, so the weeding effect is significant.