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1976年以来西北水土保持研究所与有关单位协作在延安地区对万亩农田喷硒,经5000余人吃硒粮后进行预防克山病的效果观察,现将黄陵县店头、宜君县五里镇两地作物喷硒改粮预防克山病发病的五年及三年结果报告如下。一、粮食及人体发硒含量的变化经连续五年(黄陵店头)及三年(宜君五里镇)测得两地喷硒改粮后的小麦、玉米等作物的含硒量,看出比当地未喷硒的提高了3—5倍,均接近达或到陕西一般非病区作物的含硒量。吃硒粮儿童的发硒比当地对照点、渭北陕北病区、秦岭山地病区同龄儿童发硒提高了3—4倍,接或近达到省内一般非病区同龄儿童的发硒水平。
Since 1976, the Northwest Institute of Soil and Water Conservation in cooperation with the relevant units in Yan’an million mu of farmland to spray selenium, after more than 5,000 people eat selenium grain to prevent Keshan disease effect observation, now Huangling County shop, Yijun County five In the town of two crops to spray selenium to prevent the incidence of Keshan disease five years and three years results are as follows. Change of selenium content in food and human body The selenium content of crops such as wheat and corn after spraying selenium for two years was measured for five years in a row (Huangling Shentou) and three years (for the town of Wuli in Yijun) Seen 3-5 times more than that of non-sprayed selenium in the area, all of which are close to or reach the selenium content of crops in general non-ward areas in Shaanxi Province. Selenium selenium children eat selenium than the local control points, Weibei northern Shaanxi ward, Qinling mountain wards children of the same age increased selenium 3-4 times, then or close to the province’s general non-ward children of the same age selenium levels .