Grain drying is the key to get through the "last kilometer" of the whole mechanized grain production. The development of grain drying machinery is of great strategic significance for ensuring national food security. At present, the advantages of grain dryers have become increasingly prominent, which has attracted much attention. What are the advantages of grain dryers? What is the future? What challenges will we face? How can we better promote the development of grain dryer industry?

       
      Food is the most important thing for the people, and food security is the most important thing. As a mechanical equipment suitable for the key link of the whole mechanization of grain production, the importance of grain dryer to the high yield and harvest of grain crops is becoming more and more recognized and accepted by people. Even some people in the industry have raised it to an important supportive equipment related to the national food security strategy.
Comparing with natural drying, mechanized drying method has obvious advantages in at least the following three aspects: drying, drying, drying, drying, drying, drying, drying, drying, drying, drying, drying, drying, drying, drying, drying, drying, drying, drying, drying, drying, drying and drying.
Firstly, it can greatly improve labor efficiency and save land and labor costs. Each 10-ton dryer only needs one person to operate, and the average daily processing of grain is as high as 20-30,000 kg. It takes at least 6 people and 3-5 days to dry the same scale of grain by natural air drying.
_. Second, it is more suitable for large-scale intensive operations, not affected by the natural environment such as site, weather and so on. It is conducive to disaster reduction, food security and food grazing by tigers.
3. Mechanized drying of grain can effectively avoid secondary pollution such as soil, sand, debris and vehicle exhaust, thus ensuring better quality and quality of grain and promoting farmers'income. From the two aspects of the national food security strategy, the total amount of grain and the quality and safety, mechanized drying of grain is of strategic significance. According to official government data, as the world's largest food producer and consumer, China produces about 500 million tons of grain annually. The loss of grain in the process of threshing, drying, storage, transportation, processing and consumption after harvesting in China is as high as 18%. Among them, because of climate reasons, the loss of grain caused by mildew and germination due to lack of drying time or safe moisture is as high as 5%. The annual loss is about 20 million tons, and the direct economic loss is 20 billion to 30 billion yuan. In this sense, the development of grain drying machinery and equipment industry is not necessary, but necessary.