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一、金县耕种土壤的养分概况我县第二次土壤普查进行了大量的土壤分析,根据700多个农化样点平均,耕种土壤含有机质0.91%,含全氮0.06%,含全磷0.098%,含速效磷为3.12ppm。从整体看,耕地土壤可谓缺磷、少氮。金县不同土壤类型的耕层速效磷的含量如表1。其中以草甸淤黄土速效磷含量最高,棕壤性土最低。不同土壤类型的不同发生层次含速效磷的数量是:棕壤性土:只有腐殖质层和母质层或腐殖质层和母岩层。耕层含速磷2.5ppm 左右,母质层含速磷在1.94～2.12ppm 之间。棕壤:耕层含速磷2.44～4.36ppm;犁底层含速磷1.44～1.50ppm;淀积层含速磷低于1.44ppm,母质层含速效磷更低。
First, the Jin County tillage soil nutrient profile Second County soil census carried out a lot of soil analysis, based on more than 700 agricultural samples on average, tillage soil organic matter 0.91%, containing 0.06% total nitrogen, total phosphorus 0.098 %, With available phosphorus 3.12ppm. As a whole, cultivated land can be called phosphorus deficiency and nitrogen deficiency. Table 1 shows the available phosphorus content of different soil types in Jinxian County. Among them, the content of available phosphorus in the meadow silt loess was the highest, while that in the brown soil was the lowest. The amount of available P available for different occurrences of different soil types is: Brown soil: only humus and parent or humus and parent rock. Topsoil containing about 2.5ppm phosphorus, parent material containing phosphorus in the 1.94 ~ 2.12ppm between. Brown soil: plow layer contains 2.44 ~ 4.36ppm of fast phosphorus; plow bottom layer of phosphorus 1.44 ~ 1.50ppm; sediment with fast phosphorus less than 1.44ppm, the parent material containing lower available phosphorus.