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了解土壤钾素状况及施钾肥的效益,是合理施用钾肥,提高经济效益的重要条件之一,现综合整理近三年来的试验和化验资料,供生产参考.一、三十个县土壤钾素状况1979-1980两年中,我们对采自郑州、宁陵、新蔡、息县、南阳、洛阳、浚县等33个县、市的土壤样品,包括潮土、褐土、砂姜黑土、盐碱土、黄棕壤和水稻土六个土类,应用lN中性醋酸铵浸提-火焰光度法化
Understanding the status of soil potassium and the benefits of applying potassium fertilizer is one of the important conditions for the rational application of potassium fertilizer and improving economic benefits. Now we have compiled and tested the experimental and laboratory data for the past three years for reference. Situation During the two years from 1979 to 1980, soil samples collected from 33 counties and cities including Zhengzhou, Ningling, Xincai, Xixian, Nanyang, Luoyang and Xunxian, including alluvial soil, cinnamon soil, Saline soil, yellow brown soil and paddy soil six soil, lN neutral ammonium acetate leaching - flame photometric method