The impact of climate change on crop growth environment. Climate change has prompted the surface temperature to rise, which has led to the improvement of soil microbial activity, accelerating the loss of soil organic matter and nitrogen, causing soil degradation, erosion, and salt. At the same time, changes in regional heat conditions affect the global water circulation process, change the pattern of regional precipitation and precipitation distribution, and increase the occurrence of extreme incidents such as floods and droughts. In recent years, the extreme precipitation incidents caused by climate change have been significantly intensified. Generally, the southern floods and north drought, and the area of disaster is increasing, resulting in severe obstruction of crops in the region, and even the phenomenon of harvesting. In addition, climate disasters such as low temperature and cold damage and heat damage caused by extreme changes in global climate have also occurred. Generally, the trend of frost damage and frost damage in the Northeast and North China is increasing. The trend, even the affected by the disaster in some areas, led to a 10 % to 18 % reduction in rice production, which seriously affected the safety of food production in the main food production area of my country. The impact of climate change on crop planting system. Global climate change has accelerated the birth process of the original crops in some affected areas, shortened the birth period, and weakened the ability to resist climate fluctuations. Especially in the East China region of my country's barley, wheat and rapeseed crops. Most of the crops grown in the region are precocious varieties. With the warming of winter climate, the crops are also shortened during wintering. With the warming of the climate, it was launched in advance, which weakened the cold resistance ability of the plant, resulting in the crop that was more likely to be invaded by freezing damage, resulting in severe damage to the production of crops. This put forward new challenges for the adjustment of my country's planting system. Because nitrogen fertilizer can greatly increase the production of food, the global nitrogen fertilizer has grown rapidly, and the nitrogen content of soil has also increased. The Phil and Robertson of Mi Ogin State University believes that the greenhouse gas emissions caused by agricultural production are estimated to account for 8 % -14 % of the global total. Studies have shown that farmers can effectively reduce the use of chemical fertilizers through precise fertilization, thereby cutting emissions. CO2 high concentration inhibitory inhibitory Crop nitrite into a process of converting into protein. Nitrogen assimilation, also known as the process of nitrogen assimilation, plays a key role in the growth of plants and production. In grain crops, nitrogen is particularly important, because the use of nitrogen to produce proteins that are vital to human nutrition because plants use nitrogen. According to the British "Guardian", scientists conducted field trials on wheat, rice, corn and soybeans. The test proved that the level of CO2 of CO2 significantly reduced the basic nutrients of these crops such as iron and zinc. At the same time, the protein content of these crops is reduced. According to research, wheat growing at high CO2 levels decreases by 9 % compared with normal horizontal zinc content, reduced iron by 5 %, and protein content decreases by 6 %; Similarly, the zinc content of rice that grows at high CO2 levels has decreased. 3 %, iron decreased by 5 %, protein content decreased by 8 %; the zinc and iron content of corn and soybeans decreased similarly, but the protein content did not change much. Coincidentally, the "Natural Climate Change" magazine published "The Tomlet of Nitrates of Growth Growth in the Fields" is suppressed by CO2 elevated ". The study of this paper proves for the first time that the elevated CO2 concentration in which the concentration of the atmosphere has suppressed the process of converting nitrate nitrate into protein into protein. This also means that the climate change is intensified, which will lead to the poor nutritional quality of food crops. The organic nitrogen containing compounds in the soil mainly derived from the decomposition of animal, plants and microbial bodies, but most of these nitrogen -containing compounds are insoluble in water and are usually not used by plants. Plants can only absorb amino acids among them. , Non -soluble organic nitride such as amide and urea. Therefore, inorganic nitrogen alcohols mainly based on ammonium and nitrate, accounting for 1 % -2 % of soil nitrogen content. After the plant absorbs ammonium salt from the soil, it can directly use it to synthesize organic nitrides such as amino acids; if nitrate is absorbed, it must be restored to use. In short, the plant absorbs ammonium from the soil, or is immediately assimilated to amino acid after the ammonium is reduced by nitrate reduction. The assimilation of ammonia is performed in root, root tumor and leaf. In the next few decades, the total protein may decrease by about 3 %. At present, the three -dimensional planting technology of the active development of European and American countries and some Southeast Asia does not consume land resources. The closed soil utilization environment reduces the degree of damage to the soil. The large -scale application of plant supplementary light also solves the lack of light in the indoor three -dimensional planting. At the same time, the spectrum of the plant supplement light can be customized according to different plants. Modern measures to make refined production visualization. Zhuhai specializes in the production of various LED patch lamp beads. Recently, the demand for plant LED lamp beads has also increased. If you need to order plant LED lamp beads, you can consult customer service for order.

UV LED is composed of multiple parts. Each part affects the thermal characteristics of LED, and it also has a different effect on the heat aging. UVLED's most obvious performance change with temperature is forward voltage drop (VF). This is a chip -level phenomenon. The LEDs of different manufacturers are different. The degree of positive pressure drop is generally between -2mv/ -4mv . As shown in Figure 1, the forward voltage drop (VF) and environmental temperature of the UVLED data manual. Figure 1 can be seen from the above figure that if UVLED works in the constant current mode, the positive voltage drop of LED will decrease with the heat of LED. At the same time, the power of UVLED also decreases with the temperature increase, and the light output decreases. The impact of temperature on the electrical characteristics of UVLED depends on the chip, and the impact on optical characteristics involves the component of all LEDs. The temperature effect we often discuss is the phenomenon of UVLED's brightness and efficiency decreased with the temperature increase. Figure 2 is the relationship curve of relative radiation flux and temperature under constant current. It can be seen that relative radiation flux decreases with the increase in temperature. Figure 2 can be seen from above that thermal impact on UVLED's electrical and optical characteristics of UVLED. In order to reduce the effect of temperature on UVLED light sources, especially high -power facial light sources and special light sources, the temperature control of UVLED light source needs to be implemented. For a long time, Tianhui attached great importance to technological innovation, developed a variety of mature and reliable heat dissipation systems/solutions, and won unanimous praise from customers.

Today, UVLED irradiation and applications are becoming more and more extensive. Different companies have different design concepts and design methods. How to evaluate the quality of a UVLED irradiation device, we think there are mainly the following indicators: 1> The conversion efficiency of electricity and light is the conversion efficiency of electricity and light. Look at the ratio between our equipment consumed and the effective power of the light source output, the LED is the energy -saving light source, the higher the ratio, the higher the efficiency of the electricity power conversion. Electric large, low electricity conversion efficiency. 2> The uniformity of the distribution of light spots, uniformity refers to the difference in the strength of each point in the range of the valid light spots. The smaller the difference, the better the uniformity. 3> The life of the light source, the LED life is relatively long, but in practical applications, various design and environmental factors may destroy the light source, the longer the life span, the more reasonable the design of the device design. 4> The efficiency of heat dissipation and the uniformity of heat dissipation, because many lamp beads gathered together, which will emit a lot of heat. If the heat can not be distributed in time, it will have a fatal effect on the equipment and products. 3 methods: heat sink and water cooling. 5> The stability and reliability of the circuit control system. If this part is not done well, those with light may often fail, affect efficiency, and may destroy the light source, and even cause the terrible consequences of the fire.

Zhuhai TIANHUI [Consultation: 400 676 8616] 5050RGBW lamp beads are combined with RGB colorful and white light (white light LED lamp bead specifications can be customized according to customer needs). Lighting uses, the confusion color is more richer than 5050RGB. What is the use of 5050RGBW lamp beads at the end? 5050RGBW lamp beads can be used for outdoor lighting products and intelligent products, such as: 5050RGBW lamp belt, 5050RGBW panel lights, 5050RGBW bubbles, 5050RGBW scene lights and other products.