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在土壤普查中进行土壤养分速测时,常采用新鲜土样。但土壤中水分含量差异很大在以干土为基数,计算各土样中速效养分的含量时,首先要测定土壤的含水量。土壤含水量通常以100克干土中含有多少克水来表示。为了节省时间,简化计算手续,准确而有效地测定出土壤含水量,我们在实践中摸索制成了土壤含水量和干土换算湿土查对表,以供参考。洲定土壤含水量时应首先知道烧失重,
Fresh soil samples are often used for soil nutrient measurements in soil censuses. However, the soil moisture content is very different In dry soil as the base, calculate the content of available nutrients in the soil samples, we must first determine the soil moisture content. Soil moisture is usually expressed in terms of how many grams of water is contained in 100 grams of dry soil. In order to save time, simplify calculation procedures, accurately and effectively determine the soil moisture content, we made a trial in practice made of soil moisture and dry soil conversion wet soil check table, for reference. Chau soil moisture content should first know weight loss,