Through years of research and practice, the authors have proved that proper late harvest of corn can both prolong grain filling time and increase corn yield.
Because corn is only fully mature, it has the largest grain weight and the highest yield. Earlier harvest, poor maturity, low grain weight, and reduced yield. In some places, there are habits of early harvest, often harvested when the ear of the ear has just turned white. At this time, the 1000-grain weight is only about 90% of the ripening period, and the yield is generally reduced by about 10%.
At the same time, late harvest of corn can also increase the quantity of protein and amino acids and improve the quality of goods. Appropriate late harvest of corn can not only increase starch content in grains, but also increase other nutrients. In addition, the regular harvest of corn grain is full and full, the grains are relatively uniform, and the small grains and pod grains are significantly reduced, and the water content of the grains is relatively low, which is convenient for threshing and storage. The technical requirements for proper corn late harvest are:
1. Determine the late harvest period based on the length of the plant.
The compact corn varieties currently used in production have a phenomenon of “false ripeningâ€, that is, corn leaves are turned white earlier and the grains have not stopped filling. These varieties are often harvested in advance. In production, the grains of milk in the lower part of the ear of corn disappeared, the water content of the grain was about 30%, the grain weight of the ear was changed to be white and loose, and the grain weight was the highest. The yield of corn was the highest, and it can be used as the main sign of proper harvest. At the same time, the formation of the black layer at the base of the corn grain is also an important reference index for proper harvesting.
2. Dry the skin immediately after harvest.
Do not carry out stacking after harvesting, harvest on the tree or take skin bar and pull it home, use artificial time to dry the skin. It can also promote the new type of corn tanned skins for molting, which can save a lot of labor.
3, timely threshing drying. Because the moisture content of late harvest corn is generally about 30%-40%, farmers can choose to dry according to the weather forecast, select sunny weather, when the water content is 20%-30%, carry out threshing and drying in time, and dry to corn moisture content at 14 % The following is appropriate.
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