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河泥是由淤积在河(湖)水下面的死亡动植物体逐步形成的。所以,河泥含有丰富的生物活性物质,如维生素、类似激素的含氮成分、钙、钾、磷、铁的化合物以及微量元素。它含有丰富的糖类复合体,是制取水解饲料酵母的好原料,植物的肥料,家畜的好饲料,又可制取人用的药品。对树木环境无不良影响。苏联斯维尔德洛夫地区的涅维扬斯基林场曾做了三年试验,结果表明,河泥的刺激效果决定于工作液的浓度,一般使用浓度为20～40％,效果最好的是40％的水溶液,其平均效果比常法采脂提高45％,比亚硫酸盐酵母醪液提高3％。制备方法是:河泥加水浸泡一昼夜,用卡普隆布过滤后即可使用。
River mud is gradually formed by deceased plants and animals deposited beneath the water of rivers (lakes). Therefore, the river mud is rich in bioactive substances, such as vitamins, hormone-like nitrogen compounds, calcium, potassium, phosphorus, iron compounds and trace elements. It is rich in carbohydrate complex, is a good source of hydrolyzed feed yeast, plant fertilizers, livestock feed, but also for the preparation of human drugs. No adverse effect on the tree environment. The Soviet Union Sverdlov region Niewenskirchen field has done a three-year trial, the results show that the stimulation effect of river mud depends on the concentration of the working fluid, the general concentration of 20 to 40%, the best is 40 % Of the aqueous solution, the average effect of 45% higher than the conventional method of picking fat, bisulfite yeast mash increased 3%. Preparation method is: River mud soaked in water day and night, filtered with Kapron cloth can be used.