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我们1976～1980年在黑河流域的张掖县和临泽县的田间试验结果证明:在潮化和盐化过程共同作用下的绿洲潮土上,虽然土壤有效锌含量高于文献报导临界值0.5ppm和0.6ppm,但其上玉米的缺锌症状发生较为普遍,由此,对施锌肥有良好的反应,
The results of field experiments in Zhangye County and Linze County in the Heihe River Basin from 1976 to 1980 proved that although the effective zinc content of oasis in the oasis tidal flat under the action of tide and salinization is higher than the threshold value reported in the literature of 0.5ppm And 0.6ppm, but the corn zinc deficiency symptoms are more common, which, on the zinc fertilizer has a good response,