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1983～1985年对地区10县1市的11种母质发育的水稻土154个土样进行研究.结果表明,全锌变幅为36.4～141.4ppm,平均78.8ppm.低于我国土壤的平均值100ppm.含量分布因成土母质而异,冲积物最高,湖积物最低.有效锌平均值为0.79ppm,其中低于临界值0.5ppm的样点数为48.9%.有效锌含量与土壤pH和CaCO_3含量呈反相关;与质地(粘粒)呈正相关.土壤有效锌在剖面中的移动性很小.在缺锌土壤施用锌肥、水稻增产5.2～31.7%,平均增产11.2%,统计达极显著水平.
From 1983 to 1985, 154 soil samples from 11 parental paddy soils in 10 counties and 1 city were studied.The results showed that the total zinc amplitude was 36.4 ~ 141.4ppm with an average of 78.8ppm, which was lower than the average of 100ppm The content distribution of alfalfa was the highest in alluvial sediments and the lowest in lacustrine sediments.The average of available zinc was 0.79ppm, and the number of samples below 0.5ppm was 48.9% .The effective zinc content and soil pH and CaCO_3 content Was negatively correlated with the texture (clay) was positively correlated with the movement of soil available zinc in the profile is very small in the zinc-deficient soil Zn fertilization, rice yield 5.2-31.7%, an average yield of 11.2%, the statistics reached an extremely significant level .