How to thresh corn
1, pure manual threshing
Pure manual threshing was once a very common threshing method in rural areas. First of all, the technology at that time was really backward, and it could only be threshed by hand, which was not only inefficient, but also caused cocoons and blisters when corn was peeled for a long time. Pure manual threshing mainly uses a screwdriver to make a small crack in the corn, and then peels it by hand. Sometimes two corns can be rubbed together and threshed, but it is very laborious. Finally, peel it off completely by hand. The only advantage of peeling corn in this way is that the peeled corn is clean and does not need secondary processing to separate impurities.
2. Manual threshing
Because the output of corn is getting higher every year, it takes longer to thresh corn. People have made a simple semi-mechanical threshing method through their own continuous exploration. Just before, the liberation shoes were tied to the stool, and then people sat at the other end, and the corn could be threshed by gently grinding on the liberation shoes, which greatly improved the efficiency and was very hard every time. Later, according to this principle, someone developed a hand thresher, which can thresh by gently holding the handle and shaking it slowly clockwise, so this is also a manifestation of scientific and technological progress.
3. Mechanical threshing
In this era of advanced technology, corn threshing has entered full automation. Now, just break the corn from the corn field to dry, then pile it together, and finally start the automatic thresher to thresh, which is extremely efficient. Now it used to take a month's work and an hour or two to finish it, which can be said to be very convenient. Moreover, it is very convenient to harvest corn now, and the harvesting efficiency is much faster with a special harvester.
What are the reasons that affect corn yield?
1, variety selection
There are many varieties of corn now, and the resistance of each variety is different, such as strong drought resistance, strong disease resistance, strong cold resistance, strong waterlogging resistance and so on. Among them, the correct variety selection is the most basic reason that affects corn yield. In order to improve the yield of corn and make it unaffected by variety factors, we need to consider all kinds of factors of corn planting location before selecting varieties.
2. Planting conditions
The influence of planting conditions on corn yield is mainly manifested in three aspects: temperature, soil and light, because if planting conditions are not conducive to corn growth, then even if the variety is selected well, nothing can make up for it. Therefore, planting conditions are also an important factor affecting corn yield and the basic conditions for corn growth, so we need to choose suitable planting sites for planting.
3. Density management
If the above two basic conditions are all right, the planting density will also affect the yield of corn. Because the growth of corn needs a certain amount of light, if the planting density is too high, the field will look gloomy, which will affect the growth of corn and ultimately affect the yield of corn. There is also the reason why high density will affect pollination and eventually lead to corn yield reduction. If planted at normal density, the corn cob will be much larger and the yield of corn will increase.
4. Water and fertilizer management
Water and fertilizer are the key factors affecting corn yield. We usually improve corn yield by strengthening water and fertilizer management. If there is too much water in the field, corn seedlings will rot and produce other diseases, thus reducing corn yield. Secondly, if there is too little water, corn seedlings will die, which will also lead to reduced production. Then, if fertilization is too much or improper, it will lead to maize yield reduction, while if fertilization is too little, it will lead to maize malnutrition and eventually lead to maize yield reduction.
5. Weeding management
Weeding is an important step in maize planting. We all know that weeding can promote the growth of maize roots and seedlings, and at the same time, it can also promote the growth of maize cob, enhance the stress resistance of maize to a certain extent, and thus improve the yield of maize. However, if weeding is carried out unreasonably in the process of maize planting, it will lead to the loss of nutrients at first, and then to many pests, and then the growth rate of maize will slow down, and the best fruiting period and mature fruiting period will be missed, which will eventually lead to maize.
6. Disease management
In fact, there are many pests and diseases in the whole growing period of corn. Once the vigilance is relaxed and the control is not in place, the damage to corn is very great, because it not only affects a single corn, but also affects the whole corn. Therefore, the management of diseases is also an important reason for affecting corn yield.