1, the price is high, and the state has introduced purchase subsidies for agricultural machinery and tools. However, due to the generally high price of corn harvesting machinery in the market, the price of 18 Revo Valley God corn harvester is 280,000 yuan, and it also needs 200,000 yuan to enjoy government subsidies. The farmers' economy is still unbearable.

2, the applicability is not strong. China has a vast territory. Because of the great differences in corn planting methods in different regions, the planting row spacing is not uniform. Different planting varieties have different agronomic requirements for plant spacing and ridge spacing. The corn harvester used has high requirements for row spacing, and the contradiction between 18 Revo Valley God corn harvester and agronomy is outstanding.