First, consider the regional applicability
Most of the corn combine harvesters currently produced in China require harvesting. However, the row spacing of corn in different parts of the country is very different, and the adaptability of existing corn harvesters is limited. Therefore, the corn harvester should not be the first choice for the user. It is not suitable for row corn harvesters to adapt to different row spacings. It is not necessary to manually open auxiliary cutting trails. It can enter operations from different locations in the field and has high working efficiency. It is very suitable for the operators to carry out cross-regional harvesting.
Second, consider the issue of investment income
China's current corn harvesters are mainly divided into self-propelled, hauling, and backpacking types. The self-propelled model is large, the price is more expensive, and the investment recovery period is longer; the length of the trailing model unit is 13 to 15 meters, and it is not suitable for small plots. Considering factors such as crop land, economic level and corn harvester technology level in rural areas of our country, it is appropriate to choose a backpack type. Knapsack models can use existing tractors, with relatively little investment at a time, low operating efficiency, and better maneuverability and maneuverability. They should be the current model of choice.
Third, consider the supporting power
Tractors currently equipped with corn harvesters generally have more than 50 horsepower. When choosing a corn harvester, farmers must choose the model that matches their existing tractor power. For example, a 50-horsepower tractor can be matched with a 2-row corn harvester; farmers with 55, 600, 654, 700, and 724 tractors can choose not to use a line model or a 3-row corn harvester. The phenomenon of "small horse-drawn carts" or "big horse-drawn carts" should be avoided to achieve a reasonable match between the tractor and the harvester.
Fourth, consider product quality and after-sales service issues
From the aspect of product quality, we should purchase products that are mature and have been established. From the aspect of after-sales service, when selecting the harvester, it is necessary to examine whether the sales and production units have the capability of “three guarantees†and whether they can supply spare parts in time. At the time of purchase, it is necessary to see whether the "three certificates" (product certificate, warranty certificate, instruction manual) are complete.
Fifth, consider the straw treatment
The existing corn combine harvesters are equipped with a straw smashing and returning machine, that is, while carrying out the picking operation, the corn stalks are smashed and thrown into the ground to realize the return of straw. However, due to the development of animal husbandry, the demand for corn stalks as a kind of feed is also increasing. Farmers in many regions require that when harvesting corn ear, straw should be retained, or the crushed straw should be recycled. Aquaculture. Therefore, at present, some corn harvester companies have proposed straw recycling programs. For example, a straw lingering and reclaiming device can retain corn stalks for recycling. At the same time, some companies have also developed stalk smashing and recovery devices, which can smash and recover straw after picking and use it for silage. These devices require the user to make configuration according to the actual needs of the local area.
According to relevant analysis, harvesting operations accounted for 55% of the total maize production labor, and labor intensity was the main link in corn production. A full-scale corn harvester is not required to invest in machines. If it is operated for 20 days a year, 800 to 1000 acres of farmland will be used, and the annual income will be 30,000 to 40,000 yuan. The investment can be recovered in 2 working seasons. It can be said that it is currently investing in agriculture. The best option for mechanical enrichment.
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