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作者1979-1980年在辽宁朝阳等县对玉米、高梁进行了锌、锰施用方法和锌、锰、铜施用量试验。试验地土质为发育河流冲积母质上的浅色草甸土,土壤中含锰13.9ppm,锌为0.55ppm,试验肥料硫酸锌含锌23％,硫酸锰含锰30％。结果表明,拌种比其它施用方法增产效果明显,每斤玉米种子拌锌或锰2克增产显著,其中施锌比对照增产14.2％,锰比对照增产33％;每斤高粱种子拌锌或锰4克增产显著,其中锌比对照增产32.87％,锰
In 1979-1980, corn, sorghum were used in zinc and manganese fertilizers and zinc, manganese and copper fertilizers in Chaoyang, Liaoning Province. The test soil is light-colored meadow soil on the alluvial parent material of the river. The soil contains 13.9ppm manganese and 0.55ppm zinc. The test fertilizer contains 23% zinc sulfate and 30% manganese sulfate. The results showed that the seed dressing increased yield significantly compared with other methods. The yield of 2 grams of zinc per kilogram of corn seed was significantly increased. The yield of zinc increased by 14.2% and 33% respectively compared with the control. The sorghum seed was mixed with zinc or manganese 4 grams significantly increased production, of which zinc yield 32.87% more than the control, manganese