乌桕林地土壤养分调查研究

Research on Investigation of Soil Nutrient of Sapium sebiferum Roxb. Woodland in Hubei Province

通过对湖北省乌桕产区林地土样分析,结果表明:湖北省土壤酸碱性适宜于乌桕生长发育;但土壤有机质和大量养分含量偏低,是影响乌桕生长的主要因素;中量养分含量处于中等水平,基本能满足乌桕生长发育的需求;对微量养分Fe、Zn、Mn、B检测结果表明:罗田县土壤有效Mn含量偏低,英山和大悟的有效B含量偏低。4个主产区(大悟、英山、罗田、麻城)养分含量比较结果显示,罗田乌桕林土壤大量养分的供应能力显著强于其他3个产区。

The nutrient and fertility of soil samples were studied in the Sapium sebiferum Roxb forest of Hubei Province.The results showed that the soil pH is suitable for the growth and development of Sapium sebiferum Roxb.While soil organic matter and primary nutrient contents were low,which was the main factor affecting the growth of Sapium sebiferum Roxb.And secondary nutrients contents were at a medium level,which was sufficient for the needs of growth and development of Sapium sebiferum Roxb.As to the soil micro-nutrients Fe,Zn,Mn and B,the available Mn content was very low in the Sapium sebiferum Roxb.forest of Luotian County;and the available B contents were very low in the Sapium sebiferum Roxb forest of Yingshan and Dawu County.It showed that soil nutrient supply capacity of primary nutrients in Luotian Chinese tallow forest was significantly stronger than that of in the other three producing areas（Macheng,Yingshan and Dawu County）.