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为了解目前广东水稻土壤肥力现状,调查了广东水稻土壤有机质、全氮、碱解氮、有效磷和速效钾含量。结果表明,与第二次土壤普查相比,广东省水稻土有机质、全氮、碱解氮和速效磷均呈上升趋势,其中处于1~3级的土壤分别为86.34%、94.15%、91.02%和90.62%;而土壤有效钾含量呈下降趋势,处于1~3级的土壤为10.54%。除土壤速效钾以外其他指标总体处于较丰富水平,建议在水稻生产中要继续注重有机肥的投入,尤其要注重钾肥的施用比例。
In order to understand the current state of paddy soil fertility in Guangdong, the contents of soil organic matter, total nitrogen, available nitrogen, available phosphorus and available potassium in paddy soils of Guangdong were investigated. The results showed that compared with the second soil survey, the contents of organic matter, total nitrogen, available nitrogen and available phosphorus in paddy soils in Guangdong Province all showed an upward trend, of which the soil types 1 ~ 3 were 86.34%, 94.15% and 91.02% And 90.62% respectively. However, the content of available potassium in soil showed a decreasing trend, and the soil in grades 1 ~ 3 was 10.54%. In addition to soil available potassium other indicators are generally at a more abundant level, it is recommended in the production of rice should continue to focus on the input of organic fertilizer, with particular emphasis on the proportion of potash application.