黑龙江省西部大部为碳酸盐黑钙土,土壤有效锌含量低,一般在0.5ppm左右,对锌反映敏感的玉米作物,普遍出现缺锌症的“白苗病”,是影响玉米产量的主要障碍因素。省土肥站和省农科院共同从1978～1982年在黑龙江西部的碳酸盐黑钙土、碳酸盐草甸土、黑钙土和部分黑土上的121个点次进行了玉米施用锌肥试验示范,结果在土壤有效锌含量0.5～1ppm施用锌肥效果显著,减少了玉米白苗 Most of the west of Heilongjiang Province is carbonate chernozem, with low effective zinc content of soil, generally around 0.5ppm, corn plants sensitive to zinc, and “white seedling disease” commonly occurring in zinc deficiency, affecting the yield of corn The main obstacle. Provincial Soil Fertilizer Station and the Provincial Academy of Agricultural Sciences from 1978 to 1982 in the western Heilongjiang carbonate chernozem, carbonate meadow soil, chernozem and some black soil on the 121 points of corn application of zinc fertilizer Experimental demonstration, the results of zinc in the soil effective zinc content of 0.5 ~ 1ppm zinc application significantly reduced the reduction of white corn seedlings