In late corn, stems and leaves cease to grow and enter the reproductive growth period centered on kernel development. The main measures for management during this period are:
Timely watering: As the saying goes: "Spring drought is not drought, autumn drought is reduced by half." In the late growth stage of maize, the plant water requirement is larger, the lack of water results in poor fertilization, premature leaf senescence, decreased photosynthesis and nutrient transport capacity, increased abortive granules, and reduced grain weight, especially in 20 days after anthesis. Therefore, the drought of corn in the later period, should be poured in time large water, keeping the field water capacity of about 80%; milk cooked until the wax mature period maintained at 75 ~ 70%.
Bao Yeding top protection: It is understood that many places to the corn wax ripening period has the habit of hitting the top. In fact, this is a serious measure to reduce production, and the more we beat the leaves, the more severe the reduction in production. Studies have shown that when the corn matures, each green leaf is preserved and the yield can be increased by 5 to 6 kg per mu.
Appropriate late harvest: When the corn glutinous rice leaves dry loose, the grain becomes hard and shiny, the milk line disappears, and the black layer appears at the base, it is the mature period, and the harvest yield is the highest at this time. However, summer corn is often not fully matured and is forced to harvest, affecting yield. In particular, some compact varieties have the phenomenon of “false cookingâ€, and it takes 8 to 10 days for the mature leaves to mature. Therefore, corn should be harvested as late as possible without affecting the timely planting of wheat; if it is needed urgently, and maize is not mature, it can be harvested with panicles, clustered after harvesting, and promoted after ripening.
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