Appropriate late harvest of corn can not only prolong grain filling time, but also 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 is a habit of early harvest, often harvesting when the leaves of the ear have just turned white. At this time, the 1000-grain weight is only about 90% of the ripening period, and the yield is usually reduced by about 10%.
At the same time, corn late harvest can also increase the number of proteins 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 the remaining nutrients. In addition, the harvested maize kernels are full and full, the seeds are relatively uniform, the small pellets, pods are obviously reduced, and the moisture content of the seeds is relatively low, which facilitates the threshing and storage.
1, according to the long phase of the plant to determine the late harvest period.
The compact maize varieties used in current production often have the phenomenon of “false cookingâ€, that is, the maize leaves are whitened earlier and the seeds have not yet stagnated. These varieties are often harvested early. In production, the milk grain of the lower part of the corn ear dissipated, the grain moisture content was about 30%, the grain weight was the highest when the leaves were turned white and loose, and the corn yield was also the highest, which 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 is also possible to promote the new type of corn tanned skins for molting, which can save a large amount of labor.
3, timely threshing drying.
Because the moisture content of late harvest corn is usually about 30% -40%, farmers can choose according to weather forecast, clear weather for drying, when the water content of 20% -30%, timely threshing drying, drying to corn moisture content in 14 % is appropriate below.
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