Photovoltaic agriculture concept and advantages

Photovoltaic agriculture concept and advantages

Photovoltaic agriculture, that is, the combination of photovoltaic power generation and planting and breeding, is called photovoltaic agriculture. It combines "photovoltaic power generation" with "agriculture". While developing agriculture, it uses solar power generation systems to generate electricity, thereby achieving the goal of "agriculture and power generation". In simple terms, photovoltaic agriculture is a new type of agriculture that widely applies solar power generation to modern agricultural planting, breeding, irrigation, pest control, and agricultural machinery power supply.

Photovoltaic agriculture complies with the requirements of the food chain relationship and the energy system of the best biological production raw materials, follows the laws of agricultural product production, and innovates material and energy conversion technologies to achieve the purpose of intelligent lighting, water replenishment and temperature regulation, and the agricultural products produced will be safer, more nutritious and more productive than those produced by existing methods.

Photovoltaic agriculture integration combines solar power generation, modern agricultural planting and breeding with efficient agricultural facilities. On the one hand, the solar photovoltaic system can use farmland to directly generate electricity at low cost; on the other hand, the photovoltaic light-transmitting components meet the sunlight required for agriculture, and the penetrating infrared light can increase the temperature of the greenhouse, which is conducive to the growth of plants and animals in winter and saves energy. Photovoltaic agriculture is the promotion of photovoltaic agriculture and the realization of sustainable development of photovoltaic agriculture.

As the name suggests, it is to form a photovoltaic agricultural industry circle, scale and intelligence. The photovoltaic technologies of photovoltaic agriculture mainly include: photovoltaic water lifting technology (photovoltaic water pumping system), photovoltaic water pumps, drip irrigation, sprinkler irrigation, micro irrigation and other products. Compared with traditional agriculture, the significance of photovoltaic agriculture is a production mode change that transforms farms into factories and fields into workshops. From the current situation, there are mainly the following categories.

First, solar insecticidal lamps. Compared with traditional pesticides, the biggest advantage of solar insecticidal lamps is that they replace pesticides or use less pesticides, which can ensure food safety. At the same time, such products on the market already have functions such as time control, rain control, light control, and all-weather intelligent management.

In addition to ordinary power products, some high-tech companies have also developed integrated field solar lighting insecticidal lamps, indoor portable lighting insecticidal and mosquito-killing lamps and other products, which greatly facilitate farmers to prevent and control pests and diseases.

Second, new solar ecological agricultural greenhouses. This technology integrates solar photovoltaic power generation system, photothermal system and new nano-ecological light conversion film technology into traditional greenhouses, achieving incredible results. For example, the light conversion film technology can convert the wavelength of sunlight passing through the light conversion film according to the needs of different plants for different wavelengths of light absorption, so that crops can absorb it more easily, improving the efficiency of photosynthesis. This new agricultural greenhouse can completely achieve energy self-sufficiency, is energy-saving and environmentally friendly, and is extremely easy to maintain. Compared with traditional greenhouses, it has the advantages of low cost and high quality of agricultural products.

Third, solar photovoltaic farms, this is a new attempt to combine modern clean energy projects with traditional breeding business, build photovoltaic power stations on the roof of the farm, to transform and upgrade traditional animal husbandry and provide green energy, and at the same time, its promotion and popularization can also play a positive role in improving the level of new energy utilization.

Fourth, new rural solar power stations. This is an innovative commercial attempt to share photovoltaic power generation systems on a village basis, building a photovoltaic power station in each village to serve the "three rural areas". Considering that solar power generation technology has a large application and development space in the construction of new rural areas, this type of product will have great potential in the future.

Fifth, solar sewage purification system. Nowadays, rural environmental pollution is becoming increasingly severe, and sewage is one of the major problems. The solar sewage purification system converts solar energy into heat and electricity and then effectively uses it in the sewage treatment process. In this process, there is basically no secondary pollution and energy consumption transfer.

Sixth, small agricultural solar products, such as solar flashlights, solar street lights, solar chargers, solar lighting mosquito repellent lamps, etc. These products can provide great convenience for farmers in remote areas without electricity or power shortages.

The products listed above are just a few representative and practical photovoltaic products. In fact, photovoltaic agriculture has broad application prospects in many other aspects. In time, similar products will be continuously developed, which will not only provide convenience for agricultural production, but also improve the level of agricultural science and technology, improve the living standards of farmers, and promote the accelerated transformation of rural areas.

The state has taken measures to promote the development of photovoltaic agriculture. In summary, modern agriculture needs the support of photovoltaic technology, and the application value of photovoltaic products in agriculture is also immeasurable. Promoting the development of photovoltaic agriculture is a win-win way to develop modern agriculture and solve the difficulties of the photovoltaic industry. The reasons are as follows.

First, it is conducive to the comprehensive environmental protection of planting and breeding. For example, the application of equipment such as solar insecticidal lamps can effectively solve the problems of soil fertility decline, serious pesticide and veterinary drug residues (in fruits and vegetables), and a large increase in agricultural waste caused by the large-scale use of fertilizers and pesticides in traditional agriculture, thereby achieving the purpose of protecting the rural ecological environment and reducing food safety accidents.

Second, it can provide energy supply for planting and breeding bases. For example, the establishment of photovoltaic greenhouses can provide heat and electricity to planting and breeding sites such as vegetables, flowers, seedlings, and livestock to ensure their smooth wintering.

Third, it can improve farmers' lives. Now the country is vigorously promoting the construction of civilized villages and towns, and one of the important contents is to accelerate the construction of rural infrastructure. If solar lighting and solar heating can be gradually promoted in rural areas, this will undoubtedly provide convenience for farmers' lives.

Fourth, photovoltaic agriculture can also be used in forestry production or water conservancy construction. For example, solar water monitoring and reporting systems, forestry monitoring and reporting systems, and water conservancy irrigation systems all require the use of photovoltaic technology and solar energy. Therefore, I have reason to believe that photovoltaic agriculture will be the engine to solve the long-term difficulties of my country's modern agricultural development, the inevitable choice for further developing the rural economy and improving farmers' lives, and the trend of the times for the transformation of agricultural production methods.

Photovoltaic agriculture semiconductor lighting

The advantages of photovoltaic agriculture and semiconductor lighting: direct current, local consumption, no transportation costs, zero power consumption, zero carbon dioxide emissions of solar products.

Photovoltaic agriculture is an industry where photovoltaics and agriculture share land, sunlight, space, and synergy. Photovoltaic agriculture semiconductor lighting converts surplus solar energy into electrical energy through photovoltaic power generation, and converts electrical energy from LEDs into photosynthetically active radiation such as red light and blue light for greenhouse lighting through time and space transfer, which has many advantages.         

Prospects for the development of photovoltaic agriculture

Existing problems in photovoltaic agriculture:

① Research on the environmental effect of light blocking by greenhouse photovoltaic facilities and its optimization methods and indicators;

② Research on the profitable operation mechanism and regional planning of photovoltaic agriculture (it is not suitable to build large-scale in the east, and the west can use the above-mentioned photovoltaic agriculture to increase the land rate and plant crops);

③ Research on the dominant mode and efficient operation mechanism of photovoltaic agriculture (photovoltaic greenhouse, photovoltaic water pump, fishery photovoltaic and field photovoltaic);

④ There are few agricultural production, education and research units involved, and the adaptability of photovoltaic systems to environmental factors under facility conditions (temperature, light and humidity) is studied;

⑤ Standards are from products, methods, management, basic standards; research work, based on science and technology, stakeholders, horizontal and vertical classification; safety performance standards;

⑥ Non-agricultural projects occupy farmland to defraud national taxes and subsidies seriously, and greenhouse environmental control is combined with cultivation systems and photovoltaics to avoid two skins; develop agriculture in an industrial way with the help of engineering technology;

⑦ Greenhouse covering materials

⑧ The lifespan of greenhouse and photovoltaic power station components is contradictory (10 years and 25 years); The lighting angle of the greenhouse is contradictory to the inclination angle of the photovoltaic components (regional); The PID effect of the components under high temperature and humidity conditions in the greenhouse is serious (the attenuation rate is 40%, and the PID is measured at 60℃, 85% humidity, 1000V and 96h, and the string inverter and junction box are protected IP65); The contradiction between photovoltaic and agricultural operation and maintenance; The contradiction between photovoltaic and agricultural light competition (the sun greenhouse has become a shade greenhouse); The construction cycle of photovoltaic and greenhouse is different; The components cannot replace the greenhouse film and maintenance is very troublesome;

⑨ The shading of photovoltaic components leads to serious variation in the light field in the greenhouse, and suitable crop types are planted in zoning areas, or the roots are placed on the edge, and the canopy is extended to high light; The utilization method of outdoor climate change in photovoltaic greenhouses needs to be studied (soil water and heat conditions).

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