At present, people are paying more and more attention to the technical development of drying machinery. Drying machinery is rapidly increasing at a rate of about 50% per year. However, the proportion of mechanically dried grains only accounts for about 1% of the country's total cereal output, while developed countries have reached total production. About 95% of the total, it can be seen that China's grain drying machinery is far from meeting grain production needs.
1. The rapid development of mechanized harvesting breaks the coordination and balance among the original production processes, resulting in a decline in food quality and loss
There are many links in agricultural production. After many years of accumulation and improvement, it has been possible to form a set of coordinated and balanced production modes. In the early years of artificial harvesting, rice was usually air-dried in the field for a day or two after harvesting. On the one hand, it had a certain after-ripening effect, and the main reason was to reduce the grain moisture (usually below 18%), after threshing. Rice can be stored for a short period of time without deterioration. The grain is then batched and dried on a small field to achieve long-term storage of water (about 14.5%). The rapid advancement of mechanized harvesting and cross-regional operations in recent years have resulted in a highly efficient and rapid mechanized harvesting method that is seriously incompatible with the original method of grain drying, resulting in the inability of large quantities of high-moisture cereals to be promptly dried (no field, no afternoon or late afternoon harvest, and no drying). When they are stored in their pockets or stacked together, they begin to heat over time (within hours), resulting in a large drop in the taste and quality of the rice, a long period of time and even mildew.
2. New rural construction needs mechanized grain drying
The guidelines for the construction of a new socialist countryside in some provinces and cities (such as Jiangsu, Zhejiang, etc.) have made detailed provisions on the construction of new rural facilities in terms of facilities and environment. Mechanized drying can eliminate hidden traffic hazards caused by drying food on highways. It can also make the environment behind the house in front of the house clean and tidy.
3. Improve people's quality of life and produce truly high-quality grains that require mechanized grain drying
In order to meet people’s increasing demand for quality of life, in addition to varieties, cultivation methods, and growth environments, high-quality rice production requires timely and scientific drying and storage methods and equipment to ensure the biological activity and freshness of each grain. According to foreign experience, high-moisture cereals should be machine-dried within 3 hours of harvesting, and their moisture content should be reduced to safe storage standards within 24 hours to ensure that their biological activity and quality are not affected.
4. Mechanized drying will significantly reduce food losses and save land occupation
The adoption of dry mechanization technology makes the drying of grain unrestrained by climate, site conditions, etc. In particular, it encounters rainy and disastrous weather during the harvest season, which can significantly reduce mildew loss. For example, in the middle and lower reaches of the Yangtze River in China, the rice harvest season is always rainy and cool, which is not conducive to drying operations. The popularization and promotion of grain dryers can reduce the use of land for drying fields (the ratio of drying area to grain planting area in large-scale planting areas is 1% to 1.5%). A drying machine with a 12-ton drying machine can meet the grain planting area of ​​600 acres can be replaced. Out of 6 acres of drying field, Jiangsu Province, 30 million acres of rice area, can save 300,000 acres of land for drying sites, for the lack of land resources in Jiangsu has great practical significance.
5. It is conducive to realizing the scale of agricultural production, promoting the transfer of land, the transfer of agricultural labor force and the construction of rural urbanization.
With the continuous increase in the cost of labor, the relative cost of machinery production will decline, its advantages will gradually manifest, and it will gradually replace manpower.
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