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随着氮、磷肥施用量的增加,作物产量的不断提高,土壤中微量元素营养日益趋于不足就河西灌漠土而言,土壤中有效锌平均含量0.47PPm,有效锰平均含量8.48PPm,有效钥平均含量0.14PPm,有效硼平均含量1.19PPM,有效锰、硼平均含量均高于临界值(7.00PPm,0.50PPm),而有效锌、钼平均含量均低于临界值(0.50PPm,0.15PPm,)。为此,甘肃省土地勘测设计院土壤肥料工作站将河西灌区划为低锌、钼:锰较低;中硼区。从近几年甘肃省有关单位做的微量元素肥料肥效试验来看,施用锌肥玉米平均增产7.0％;
With the increase of nitrogen and phosphorus fertilizer application, the continuous increase of crop yield and the increasingly less nutrient of trace elements in soil, the effective zinc content in soil is 0.47PPm and the effective manganese content is 8.48PPm, which is effective The average content of key zinc and molybdenum was 0.14PPm, the average content of available boron was 1.19PPM, the average contents of available manganese and boron were all above the critical value (7.00PPm, 0.50PPm), while the average content of available zinc and molybdenum were lower than the critical value (0.50PPm, 0.15PPm ,). To this end, Gansu Provincial Land Survey and Design Institute of Soil and Fertilizer Workstations will be divided into low-zinc Hexi Irrigation, molybdenum: manganese is low; boron area. In recent years, Gansu Province, the relevant units to do trace fertilizer fertilizer efficiency test point of view, the average zinc fertilizer application of corn 7.0%;