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六十年代初,一些科学家的研究已经证明,红薯翻蔓是一项不合理的措施。1973、1975、1981年我们在运城、临汾和晋中等地区调查,发现翻蔓摘心等措施仍然相当普遍,不少人认为不翻蔓是会减产的。因此,我们于1975、1976年又进行了一些试验,供试品种有丰薯1、郑州20、郑州9号、美国白、504-4、宁薯1号。试验结果再一次证实,不论什么品种,翻蔓、提蔓都没有增产作用,甚至还会减产,主要原因是:1.翻蔓打乱了植株的正常养分分配,降低了薯块品质。根据我们1976年测定,翻蔓处理后1—4日内叶片中干物质比对照降低7.8%,块根全糖量不翻蔓比翻蔓的平均高
In the early 1960s, some scientists’ studies have proved that sweet potato overturning is an irrational measure. In 1973, 1975 and 1981, we surveyed Yuncheng, Linfen and Jinzhong areas and found that the measures such as turning around the vine were still quite common and that many people think it will reduce production if they do not turn over. Therefore, we conducted some experiments in 1975 and 1976, with varieties of Fengshu 1, Zhengzhou 20, Zhengzhou 9, American White, 504-4 and Ningshu 1. Test results once again confirmed that, regardless of what species, turn vine, mention vine have no effect of increasing production, and even reduce production, mainly due to: 1. Turn over disturbed the normal distribution of plants and reduce the quality of potato. According to our determination in 1976, the dry matter in the leaves within 1-4 days after turning over was reduced by 7.8% compared with the control, the average amount of sugar in the root tuber was not changed to the average