Benefits and methods of plastic film corn planting
When planting corn, most farmers will choose to plant it directly in the open air, and some farmers will cover it with plastic film.
Both have their advantages and disadvantages. Why are we talking about this issue? Let's talk about two photos sent by friends (as shown below), which are corn planted in the same area on the same day.
The first picture is planted with plastic film, and the second picture is planted in the open air. It can be clearly seen that the corn in the first picture grows faster than that in the second picture. According to this friend, the corn covered with plastic film can sprout 3-5 days earlier than the corn planted in the open field, and it grows better.
Plastic film mulching planting is generally in areas where spring corn is planted more, such as Northeast China and Inner Mongolia. In addition, it is also used by many farmers in northwest China and distributed in small areas in other areas.
Planting corn with plastic film mulching has many advantages. There are three main points that farmers generally or often mention, that is, heat preservation, moisture preservation and fertilizer conservation, to ensure the normal growth of corn and improve the final yield.
Plastic film mulching cultivation of corn is to cover the corn with a layer of plastic film after sowing, which can use the radiation of the sun to improve the ground temperature.
Especially in areas where spring corn is planted in April, once it encounters cold in late spring, it has a great impact on corn.
For newly sown corn, it may lead to no emergence, while for corn at seedling stage, it may die of freezing injury. In addition, it can also reduce the heat loss on the soil surface and increase the accumulated temperature.
In addition, when corn was planted a few years ago, mice, birds and pheasants had a headache eating seeds. It will also be covered with plastic film, which is already a good solution.
The seeds are covered with plastic film to avoid being eaten. Another point is that weeds are rare in the field under the condition of plastic film planting. It can be observed that the area of weeds will be more obvious in the plots covered with plastic films and planted in the open air.
As I said at the beginning, corn covered with plastic film can sprout 3-5 days earlier than corn planted in the open field.
In this case, the corn planted at the same time heads early and matures early, and the grain weight at harvest is increased compared with that planted in the open field, which ultimately improves the yield.
Although there are many benefits of film mulching planting, many growers will not take this measure in the actual planting process. They asked some farmers and got two main answers.
First, it is more troublesome to cover with plastic film. If it is a plot with a small planting area, so much the better. If it is planted in a large area, it will take more time.
Second, it will increase the cost. The cost of plastic film for an acre of land seems small, but the more plots, the higher the cost.
From another point of view, the final net profit of planting an acre of corn is limited according to the yield per acre 1000 kg and the price of 0.95 yuan/kg, so for many farmers, if the cost can be reduced, it will not increase.