一、玉米在完熟期收获产量最高。人们通常把玉米“苍皮”(蜡熟期)做为收获的标志。为了探索玉米的适宜收获期,我区故城县于1979、1981两年进行试验。结果从表看出、玉米在完熟期收获产量最高,平均亩产为1028.6斤,分别比蜡熟期和蜡熟末期收获的增产12.1%和6.1%。原因是玉米茎杆、苞叶、穗轴及叶鞘贮藏的约5%以上的 First, the highest yield of corn harvest in the mature period. Corn is usually “bark” (waxy period) as a sign of harvest. In order to explore the appropriate harvest of corn, Gucheng County District in 1979, 1981 two years of testing. The results showed that corn had the highest yield during the ripening period, with an average yield of 1028.6 kg per mu, which was 12.1% and 6.1% more than that of the harvest at the ripening and waxing stages, respectively. The reason is that corn stalks, husk leaves, cob and leaf sheaths store about 5% or more