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在麻田中,随着麻株的生长,会出现一些细矮(一般在2.5尺以下)不能剥麻的植株,称为“小麻”。据调查:我省植麻密度大的莱芜麻区,小麻率一般在30%左右;其他麻区在10%以上。小麻多,有效株数则减少,单位面积产量自然降低。从1960年起我们对大麻发生小麻的原因进行了试验和调查,现将五年来有关结果整理如下,供参考。
In the field of hemp, with the growth of hemp, there will be some plants that can not be peeled (usually below 2.5 feet) and called “hemp”. According to the survey: Laiwu area where the planting density is high in our province, the rate of small hemp is generally about 30%; the other area is above 10%. Small marijuana, the effective number of trees is reduced, the natural yield per unit area decreased. Since 1960, we conducted tests and investigations on the causes of cannabis hemp. The relevant results for the past five years are summarized below for reference.