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在食管癌高发地区,对农作物施用一种金属化合物的肥料,收到了惊人的效果,不仅农作物生长良好,产量增多,还可显著降低食管癌和克山病的发病率。这种有功的金属就是钼。 钼是1778年发现的有银灰色光泽的稀有金属。钼不仅对动植物的营养及代谢具有重大意义,在人体内也有重要生理功能,因而已于1953年被公认为必需微量元素。大量研究证明,钼含量过高或缺乏都会引起动植物及人体内一系列生化紊乱,进而产生种种病理变化,而补充钼则有一定的治疗及预防作用。
In areas with high incidence of esophageal cancer, the application of a metal compound fertilizer to crops has received impressive results. Not only does the crop grow well, but the yield is increased, and the incidence of esophageal cancer and Keshan disease can be significantly reduced. This kind of active metal is molybdenum. Molybdenum is a rare metal with a silvery luster found in 1778. Molybdenum is not only of great significance for the nutrition and metabolism of plants and animals, but also has important physiological functions in the human body. It was therefore recognized as an essential trace element in 1953. A large number of studies have shown that excessive or lack of molybdenum will cause a series of biochemical disorders in animals, plants and humans, and then produce a variety of pathological changes, while the replenishment of molybdenum has a certain therapeutic and preventive effect.