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作者制做了三种不同温度和含水量的土壤样品,其温度分别为10℃、25℃和40℃,湿度分别为5巴、三分之一巴和零巴。(1巴=750毫米水银柱高;一个大气压=760毫米水银柱高=1.013巴。)这些样品被用在风干后和在潮湿状态下通过二乙撑三胺五乙酸提取锰、铁、铜、锌。当土壤含水量为零巴时,锰、铁、铜的可提取量随温度增加而增加。含水量较低时,温度对这些元素没有影响。提取前把样品风干,在许多情况下,增加温度会减少锌的可提取
The authors made three soil samples with different temperature and water content, with temperatures of 10 ° C, 25 ° C and 40 ° C respectively, with humidities of 5 bar, one-third bar and zero bar respectively. (1 bar = 750 mm mercury column height; one atmosphere = 760 mm mercury column height = 1.013 bar.) These samples were used to extract manganese, iron, copper, Zinc. When the soil moisture is zero bar, the extractable amount of manganese, iron and copper increase with temperature. At low water contents, temperature has no effect on these elements. The samples are air-dried before extraction and in many cases increasing the temperature will reduce the extractables of zinc