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安徽省耕种土壤中的有效锌,pH<7的土壤,用0.1NHCl提取,平均值3.82ppm,总体水平较高,以第四纪红粘土发育的红壤缺锌较严重。pH≥7的土壤用DTPA—CaCl_2—TEA(pH7.3)提取,平均值0.10ppm,总体水平偏低,缺锌率达75.75%,以黄土性古河湖相沉积物、黄泛冲积物,长江冲积物发育的潮土和砂姜黑土缺锌最严重。土壤有效锌的剖面分布,以“渐减型”与“凹肚型”为主。
The effective zinc in cultivated soils in Anhui Province, pH <7 soil, extracted with 0.1NHCl, with an average of 3.82ppm, the overall level is higher, the red soils developed in Quaternary red clay more zinc deficiency. The soil with pH≥7 was extracted with DTPA-CaCl_2-TEA (pH7.3) with the average value of 0.10ppm. The overall level was low and the zinc deficiency rate was 75.75%. The sediments of loess-type Furukawa lake sediments, Fluvial alluvial soil and sand Zhajiang black soil the most serious zinc deficiency. The distribution of soil available zinc profile is dominated by “decreasing type” and “concave type”.