【摘要】 通过测定小兴安岭典型针阔混交林下土壤的理化指标并进行相关分析,得出结论:小兴安岭的森林土壤比较疏松,保肥保水,土壤含水率适中,pH值处于微酸性范围;有机质和全量氮、磷、钾含量高;速效氮含量为缺乏段,有效磷含量为中等至较丰富段,速效钾含量为丰富至特级丰富段。这种土壤理化状况有利于森林土壤微生物活动,而且土壤的潜在供肥能力强,很适宜以红松为主的针阔混交林生长发育;虽然速效氮比较缺乏,但由于针阔混交林内的树木大多数含有菌根菌,可以帮助树木分解吸收非速效状态下的养分,来弥补速效氮养分供给不足所造成的影响。更多还原

【Abstract】 The typical Xiaoxing’anling conifer in the physical and chemical indicators of soil content and analysis of data showed that: the forest soil compared Xiaoxing’anling loose,Paul fertilizer water conservation,soil moisture content belongs to moderate range,pH values are slightly acidic range,there is beneficial to the forest soil microbial activity,well suited to red pine dominated conifer growth and development,organic matter content for the super-rich segment; total nitrogen content of super-rich segment; total phosphorus content is relatively rich; total potassium content of rich; organic matter and total amount of nitrogen,phosphorus and potassium content was high,shows the soil under conifer strong potential for the fertilizer. The lack of available nitrogen content of the segment; available phosphorus content was moderate to rich segment; potassium-rich content to the super-rich segment. The lack of available nitrogen nutrient,phosphorus nutrient medium to a more abundant potassium nutrient-rich to super rich,we can see that the relative lack of available nitrogen nutrient, phosphorus and potassium are divided into relatively rich,but because within a conifer-trees,most of which contain mycorrhizal fungi that can help break down the trees to absorb nutrients in a state of non-quick to make up for the insufficient supply of available nitrogen nutrient impact.更多还原