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夏玉米在衡水市属主要粮食作物之一,种植面积仅次于小麦。一般玉米播种期在6月15日左右,农民习惯开始收获的时间多在9月15日左右,9月20日达高峰,此时玉米正处于蜡熟期,还没达到完熟,整个玉米籽粒灌浆期不足45d。本文通过实地测验,试图找出玉米产量最高的时期是蜡熟期还是完熟期,还是在完熟期产量高;蜡熟期后,玉米的千粒重是否增加,增加多少的问题,为夏玉米晚收是否增产找到科学依据。
Summer corn in Hengshui City is one of the main food crops, planted area second only to wheat. The general corn sowing period is around June 15, and peasants are accustomed to start harvesting mostly around Sept. 15, reaching a peak on September 20, at which point the corn is in waxy stage and has not yet reached maturity. The whole corn grain filling Less than 45d. In this paper, we try to find out whether the period with the highest yield of corn is wax ripening or maturing or the yield is high at the ripening stage. Whether the 1000-grain weight of corn increases after the wax maturity increases the problem of whether the yield of summer corn is late Increase production to find a scientific basis.