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地膜玉米由于具有抗旱、保墒、增产等优点,近年来如雨后春笋般在甘肃省许多地方大面积种植。仲秋时节,丰收在望,农民朋友都很关注其产量。那么,玉米何时收割产量高呢? 玉米包叶在刚刚发黄时,玉米籽粒的上部虽然发硬,但下部仍较软,含水量仍较大,叶片仍进行光合作用。叶片、茎杆和穗轴等体内营养物质正在继续灌浆。如果在这个时期收割,则会影响千粒重。据测定,在玉米叶刚发黄时收割,玉米的千粒重为270克左右,亩减产50多千克;玉
Due to its advantages of drought resistance, soil moisture conservation and yield increase, mulched corn has mushroomed in large scale in many places in Gansu Province in recent years. Mid-autumn season, harvest in sight, farmers friends are concerned about their output. So, when the yield of corn is high then? Corn leaves just yellow, although the upper part of corn kernel hard, but the lower part is still soft, water content is still large, the leaves are still photosynthesis. In vivo nutrients such as leaves, stalks and cob are being grouted. If you harvest during this period, it will affect the 1000-grain weight. According to the determination of corn leaves just yellow when harvesting, grain weight of corn is about 270 grams, mu yield more than 50 kilograms; jade