What management tasks should be done during the filling period of corn to be more conducive to achieving high quality and high yield of corn?

What management tasks should be done during the filling period of corn to be more conducive to achieving high quality and high yield of corn?

The corn filling period is a very important critical period in the life of corn for yield formation. It takes about half a month after corn pollination until the corn matures, which takes about 7 weeks to complete. During this period, the vegetative growth of corn has basically stagnated, mainly reproductive growth. Whether the corn kernels are full and whether the yield is high is particularly important for the management of this period. So, what management tasks should be done during the filling period of corn to be more conducive to achieving high quality and high yield of corn? Let's take a look. 1 Prevent premature plant aging

During the corn filling period, the nutrients produced by the impellers and the nutrients absorbed by the rhizomes are mainly used to grow corn kernels. The reproductive growth of corn reaches its peak, the vegetative growth basically stagnates, and the rhizome absorbs The ability of nutrients and the ability of leaves to produce photosynthetic substances are also gradually reduced. The longer the leaves remain active, the more photosynthetic substances will be produced, the plumper corn kernels will be, and the higher the yield will be.

Corn filling requires a lot of water, and the soil layer is not suitable for drought. In some areas, there is frequent rainfall, so there is no shortage of water, so there is no need to worry about lack of water. However, in areas where there is no rain for a long time, the soil moisture content will often be insufficient, and corn drought will occur. At this time, it will affect the normal filling of corn, so it is best to irrigate. When the water content is appropriate, add fertilizer, and if possible, it is best to spray 0.5% potassium dihydrogen phosphate solution + 1% urea solution + brassinolide 3000 times to prevent premature aging of corn. 2. Prevent and control pests and diseases as early as possible

When corn enters the grain-filling period, reproductive growth is the key. Almost all nutrients are transported to the grain, and the ability to resist pests and diseases is not as strong as in the early stage. In addition, the corn plant is tall. It is also large, and the leaves in the field cross each other to block the sun. At the same time, the ventilation and light transmission capacity of the field is reduced. At this time, pests and diseases have an opportunity, such as corn brown spot, rust, and if the weather is dry, there are also more planthoppers. Easy to produce.

Under the influence of diseases and insect pests, the leaves age too early and cannot produce sufficient photosynthetic nutrients normally. The nutrients needed for grain growth can only be transported and grown from the leaves and plants, leading to premature aging of corn. This Like a vicious cycle, the corn kernels do not grow well. Two weeks after the corn flowers bloom, you can spray 1000 times of spirodiclofen + 1000 times of pyrazole and prochloraz + 800 times of indoxacarb + 0.5% potassium phosphite on the leaves, which can prevent and control pests and diseases, supplement trace elements, and resist The role of premature aging. 3. What to do if corn lodging

After corn enters the filling period, although it is in the second half of the period, relatively strong wind and rain are very common at this time. The early work to prevent lodging has been done well. It is better to see that the occurrence of seedling failure in corn is relatively minor. If the dwarf stalk growth control agent is not sprayed in the early stage, the seedling failure will occur in the future when encountering relatively strong wind and rain. If the seedling failure is only at the root, it can be done after it rains. Then give it some support immediately to improve the ventilation capacity. If the seedlings fall apart, there is no meaning in correcting them. 4. Harvest corn with mature live stalks appropriately late

Without affecting the planting of the next crop, extending the harvest time of corn as far as possible can make the corn filling well and the grains full, thus improving the quality of corn. overall output.