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测定了江苏南部地区主要土壤剖面中微量元素含量,包括镇宁丘陵区由下蜀黄土发育的三种旱作土壤和两种水稻土以及太湖地区由沉积物发育的六种水稻土。其中以丘陵区的白土和下蜀黄土发育的土壤中对植物有效的硼和钼含量较低,可能不够满足农作物的需要。铜锰锌含量较高,供给是比较充足的,但少数对锌敏感的植物有缺锌现象。栽培试验结果与土壤化学分析结果一致。初步的栽培试验说明在丘陵区的白土上(溧阳)施用钼肥使大豆和花生产量提高4—26%,使紫云英鲜重量提高12%。盆栽试验证实钼肥使紫云英的重量、含氮量和种子产量都有所提高。钼肥与磷肥配合施用的效果比单独施用好。硼肥使大豆、花生和油菜产量提高12—26%。含钼和含硼的工业废渣都可以作为肥料,是廉价的肥源。
The content of trace elements in the main soil profile of southern Jiangsu province was measured, including three kinds of dry soil and two paddy soils developed from Xiashu loess in Zhenning hilly region and six kinds of paddy soils developed from sediments in Taihu Lake region. Among them, the effective boron and molybdenum content in soils developed in the hilly loam and Xiashu loess is low, which may not be enough to meet the needs of crops. Copper, manganese and zinc content is high, the supply is more adequate, but a few zinc-sensitive plants have zinc deficiency phenomenon. Cultivation test results and soil chemical analysis of the same. Preliminary cultivation experiments showed that the application of molybdenum fertilizer on the white soil in the hilly area (Liyang) increased the yield of soybean and peanut by 4-26% and the fresh weight of the milkvetch by 12%. Pot experiment confirmed that the molybdenum fertilizer made the weight, the nitrogen content and the seed yield of the milk vetch increased. Molybdenum fertilizer and phosphate fertilizer with the application effect is better than alone. Boron fertilizers increase yields of soybean, peanut and rape by 12-26%. Containing molybdenum and boron-containing industrial waste can be used as fertilizer, is a cheap source of fertilizer.