The late summer corn management is very important. In addition to increasing the attacking grain fertilizer and diligently pouring the grain water, we should also grasp the following tasks:
1. Manual detasseling and assisted pollination Maize detasseling As long as the method is proper, it can generally increase production by about 10%. Because in the tasseling and flowering process of maize, tassels are highly respiration and consume a certain amount of nutrients and water. The water and nutrients available for the development of the female ear are relatively reduced, which leads to the dislocation of the flowering time of the female and tassel, and reduces the number of grains per ear. After detasseling, water and nutrients are saved, which can be used for the development of the ear; emasculation can also improve the upper lighting conditions, reduce plant height, and prevent lodging; at the same time, emasculation can also prevent corn borer damage. The emasculation should be performed when the tassels have just been removed without flowering. Premature detasseling, easy to pull out the leaves affect the growth; too late, tassel has blossomed loose powder, lost emasculating significance. When emasculating, one row is removed every other row, and the septum can also be emasculated. The number of emasculated plants is generally not more than 1/2 of that of the whole field. Do not emasculate at the edge of the field or at the head of the field to avoid affecting pollination. After pollination, all tassels can be trimmed to increase light in the population. Detasseling combined with artificially-assisted pollination increased the yield significantly, allowing pollination of unfertilized ears at the end of blooming.
2. In the later stage of shallow tillage, shallow cultivator can remove compaction, increase ventilation and ventilation, which is conducive to microbial activity and nutrient decomposition, promote root absorption of nutrients, prevent premature aging, help mature, and increase grain weight. After grouting, it can be smashed once or twice, and the ridges can be flattened before harvesting, which can be used to create the conditions for timely planting of wheat.
3. It is an important measure to prevent premature senescence and increase grain weight by prohibiting the use of foliar and top-cutting corn to maintain green leaf area and extend photosynthetic time before harvest. In some areas, there are bad practices that prematurely hit the top of the tree and should be stopped.
4. Prevention and control of late-stage pests and diseases General corn from heading to maturity often has damage to the ear, stickworm, aphids, and spider mites, and measures should be taken to strengthen prevention and control.
5. Timely harvest generally When the corn husk leaves dry and loose, the grains harden and shiny, the milk line disappears, and the black layer appears at the base, that is, the ripening period, when the harvest yield is the highest. However, when summer corn is often not mature, it should be forced to harvest and affect yield. In particular, some compact varieties have a phenomenon of “false ripeningâ€, and it takes 8 days to 10 days for the mature leaves to mature. Therefore, if it does not affect the production of wheat, corn should be harvested as late as possible; if it is needed urgently, and the corn is not mature, it can also be harvested with spikes, bundled up after harvest, and promote ripening. Http://
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