According to the information of the Ministry of agriculture and rural areas, in 2021 / 22, China's corn planting area reached 42670 thousand hectares (640 million mu), an increase of 1406 thousand hectares (21.09 million mu) over the previous year, an increase of 3.4%. In addition, during spring sowing this year, the soil moisture in most producing areas is better than that of last year. In addition, due to variety improvement, technological progress and other factors, it is expected that the per unit yield of corn will reach 6370 kg per hectare (425 kg per mu), an increase of 0.8% over the previous year, and the total output of corn will be 272 million tons, an increase of 4.3% over the previous year. This also indicates that the reduction and adjustment of domestic corn planting area from 2016 to 2020 has come to an end, and a new planting structure adjustment cycle is beginning.

Although the planting area has been adjusted, corn has the characteristics of wide planting area, strong climate adaptability, relatively easy field management, diverse uses and strong price preservation. The planting area has always ranked first among the four major grain crops in China and plays an irreplaceable key role in China's agricultural industry system. However, what is not synchronized with the first planting area is that the development of corn harvesters in China started relatively late and the degree of mechanization is low. Manual harvesting still exists in many regions. According to statistics, the yield of domestic corn harvesters is around 80%, and the non machine harvesting area is estimated to exceed 120 million mu. There is still a large space for the rigid demand of corn harvesting machinery.

The annual sales volume continues to grow for a long time

Compared with other crops, corn not only has the characteristics of high plant height, hard straw texture and high grain moisture content during harvest, but also has various agronomy, different planting plot sizes and various planting row spacing. It is relatively difficult to harvest corn by machine, which is a great test for the adaptability, reliability, peeling and threshing effect of operation machinery.

Data show that before the first World War, there were corn ear pickers driven by animal traction and tractor traction in foreign countries; In 1928, corn ear picking and bract peeling machine appeared; In 1930, a corn ear picking platform equipped on the grain combine harvester appeared. In the 1950s, the United States installed a threshing device on the corn picker to become a corn picker and thresher. Since the 1970s, it has been rapidly developed and widely used. At present, the production technology of foreign corn harvesters has been fully mature. In the United States, Germany, Ukraine, Russia and other countries, corn harvesting (including grain and straw silage) has realized all mechanized operations. Because most of its planting methods are planted once a year, the moisture content of corn grain at harvest is very low, and most countries adopt the harvesting method of corn ear picking and direct threshing.

In 1962, China successfully developed corn husker; In 1973, the corn ear picker and corn ear peeler were developed and produced; In the 1990s, the basic research and resource accumulation of corn harvester were really completed. In 2004, the national agricultural machinery purchase subsidy policy began to be implemented. Driven by the subsidy policy, domestic agricultural machinery R & D and manufacturing enterprises have successively entered the field of corn harvesters, and the industrial development has entered a rapid development channel.