Due to different planting conditions, different planting methods and large regional differences, the yield per mu of corn varies greatly.
But as far as Wang knows, the yield per mu of most plots where corn is planted is very high, reaching 1500 kg.
It is not easy to reach the yield per mu 1.500 kg. In addition to the soil itself, the local climate and varieties, and the later management are equally important.
As the first growth period of maize after emergence, if seedling management is in place, the probability of high yield of maize will be greatly increased.
In this article, the little helper will tell you five things that need to be done in maize seedling stage, and do these five things well to increase the probability of high yield of maize. After reading these five things, you will have the answer.
The first thing: check the seedlings and replant them.
Pay attention to the emergence of corn after its emergence. Because of sowing depth, seed quality, sowing technology and soil problems, there may be seedling shortage.
If there are any missing seedlings, they should be replenished in time.
If there are not many seedlings, there is no need to replenish seedlings, which has little effect on yield.
If the seedling shortage rate is higher than 10%, the seedlings should be replanted.
The method of replanting is also very simple. Buy some corn seeds and reseed the missing seedlings.
The second thing: thinning seedlings and fixing seedlings
This situation is just the opposite of the above, which is a phenomenon of lack of seedlings and an excessive emergence of seedlings.
For plots with too much sowing, such as sowing 5 kilograms per mu, the number of seedlings is too large and the number of effective seedlings in the field is too dense, which is not only not conducive to increasing production, but also leads to reducing production.
Therefore, if the seedlings are too dense, it is necessary to manually pull out the excess corn seedlings to ensure a reasonable number of seedlings.
The third thing: the empty net
For plots with strong water and fertilizer conditions, corn is easy to grow vigorously at seedling stage. Once vigorous growth occurs, the ability to consume water and nutrients is enhanced, and lodging is easy to occur in the middle and late stages.
Seedling stage is the best period to control vigorous growth. Therefore, if you encounter a plot of corn, you need to control it in time.
Control methods can be selected by spraying control agents, such as chlormequat chloride, paclobutrazol and ethephon. In order to improve the control effect, we should follow the three principles of "black control, yellow control, fertilizer control, thinness control, dryness control and humidity control".
The fourth thing: water.
In some plots, because the soil is dry when sowing, when corn emerges, on the one hand, the emergence rate decreases, on the other hand, the emerging corn is weak and the leaves are weak.
In this case, irrigation should be done in time.
It can not only promote the emergence of corn, improve the emergence rate, but also promote the normal growth of weak corn seedlings, so as to grow better in the future.
The fifth thing: intertillage
In some areas, corn may encounter continuous rainy weather or heavy rainfall at seedling stage. In this case, after the rain, the weather is sunny and the temperature is warmer, and the soil in the field is easy to harden, which is not conducive to the normal growth of corn.
The practice of intertillage not only has the function of moisture conservation, but also is beneficial to the respiratory growth of roots and promotes the normal growth of maize seedlings.
The sixth thing: weeding
Weeding is one of the things that farmers have to do in maize seedling stage, and the importance of this article can be seen at the end.
The best period of corn herbicide is 3-5 leaf stage, when weeds are about 2-4 leaf stage, and the resistance of weeds to herbicides is weak, even malignant weeds (reed, sedge, etc. ) are still in the grass stage. Spraying herbicides at this time can greatly improve the weeding effect.
At the same time, in this period, the maize itself has strong resistance to stress, and it is not easy to cause herbicide damage.
The above contents are six things that farmers should do in maize seedling stage. In order to achieve the yield per mu 1500 kg of corn, these six things must be done well to lay a good foundation for the final high yield.
If the yield of corn per mu can reach 1.500 kg, the total income of an acre of land can reach 2 1.75 yuan according to the current corn price/.45 yuan/kg. Excluding the cost, the highest net profit can reach about 1.500 yuan, and the income is relatively considerable.
Therefore, farmers should pay attention to maize seedling management. What do you think of this?