1. Consider regional applicability
At present, most of the corn combine harvesters produced in China are required to harvest on the row, and the row spacing of corn planting in different parts of China is also very different, and the regional adaptability of the existing corn harvester is limited. Therefore, the wrong line corn harvester should be the user's preferred model. No line corn harvester to adapt to a variety of different row spacing, do not need to manually open auxiliary cutting, can enter the operation from different positions in the field, the operation efficiency is high, very suitable for the machine hand for cross-area machine harvest.
2. consider the issue of investment income
At present, China's corn harvester is mainly divided into self-propelled, traction and backpack type 3 types. Self-propelled model is large, the price is more expensive, the investment payback period is longer; Traction type type unit length, up to 13-15 meters, not suitable for small plots. From the planting plots in the vast rural areas of our country, the economic level and the technical level of the corn harvester and other factors considered, it is appropriate to choose the knapsack. The knapsack type model can use the existing tractor, a relatively small investment, operation efficiency is not low, the operation of mobility and maneuverability are better, should be the current preferred model.
3. consider the compatibility of power
At present, the tractor supporting corn harvester is generally powered by more than 50 horsepower. Farmers must choose corn harvesters that match the power of their existing tractors. Such as 50 horsepower tractor, can be matched with 2 lines of corn harvester; Farmers with tractors such as 55, 600, 654, 700 and 724 can choose the wrong type or the 3-row corn harvester. The phenomenon of "small horse-drawn cart" or "big horse-drawn cart" should be avoided to achieve a reasonable match between tractor and harvester.
4. consider product quality and after-sales service
From product quality respect, should choose and buy technology is mature, already finalize the design of the product. From the aspect of after-sales service, the purchase of harvesting machine, to investigate whether the sales and production units have product "three guarantees" ability, whether the timely supply of spare parts. When buying, should see "3 card" (certificate of product qualification, 3 packets of proof, use manual) whether all ready.
5. consider the straw treatment
The existing corn combine harvesters are equipped with straw crushing and returning machines, that is, while picking ears, they also crush corn stalks and throw them into the field to realize straw returning. However, due to the development of animal husbandry and breeding industry, the demand for corn stalks as a kind of fodder is also increasing. Farmers in many areas require that when harvesting corn ears, they keep the stalks or recycle the crushed stalks for breeding. Therefore, at present some corn harvester production enterprises put forward the straw recycling program. For example, the whole retention recovery device can retain and recycle corn straw; At the same time, some companies have also developed a straw crushing recovery device, can pick up straw after the ears, crushing and recycling, for silage. These devices need to be configured by users according to local actual needs.
According to relevant analysis, harvesting operations account for the whole corn production of 55% of labor, labor intensity is large, is the main link of corn production. A wrong line full range corn harvester into the machine operation, if the operation of 20 days a year, 800-1000 mu of operation, annual income can reach 30,000-40,000 yuan, 2 operating seasons can recover the investment, can be said to be the best option to invest in agricultural machinery to get rich.
