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为了明确河北省太行山山麓平原高产田与常规农田的土壤肥力差异,试验选取河北省定兴县、宁晋县、赵县、正定县和藁城市的5个点,分层采取土样,从土壤物理性质、土壤化学性质和土壤生物学性质等方面进行比较分析。结果表明:0~30cm土层高产田的土壤容重明显小于常规田,土壤孔隙度明显大于常规田;0~90cm土层的高产田pH值和常规田无显著差异,土壤有机质和全氮含量略高于常规田,但无显著性差异;土壤硝态氮在15~30cm出现高产田低于常规田的趋势,其他土层分别比常规田高44.15%,76.23%和20.00%;土壤速效磷含量在15cm以下急剧降低,0~30cm土层比常规田低,30~60和60~90cm土层分别比常规田高12.94%和25.15%;土壤速效钾仅在0~15和60~90cm土层的高产田分别比常规田高5.16%和11.90%。高产田的微生物量碳平均含量在各土层均显著高于常规田,微生物量N、脲酶活性、过氧化氢酶和蔗糖酶活性的平均含量虽然差异性不显著,但均呈现高于常规田的趋势。
In order to clarify the difference of soil fertility in highland and plain farmland in the foothills of Taihang Mountain, Hebei Province, 5 spots of Dingxing County, Ningjin County, Zhao County, Zhengding County and 藁cheng City of Hebei Province were selected. Soil samples were taken from the soil Physical properties, soil chemistry and soil biological properties and other aspects of comparative analysis. The results showed that the soil bulk density of 0-30 cm soil layer was obviously less than that of conventional field and the porosity of soil was obviously higher than that of conventional field. There was no significant difference between high yield field and 0-090 cm soil layer in the field and the content of soil organic matter and total nitrogen Higher than conventional field, but no significant difference; soil nitrate nitrogen in 15 ~ 30cm higher yield field than conventional field trend, other soil layers were 44.15% higher than the conventional field, 76.23% and 20.00% The soil layer of 0 ~ 30cm soil layer was lower than that of conventional field, and the soil layers of 30 ~ 60 and 60 ~ 90cm were 12.94% and 25.15% higher than the conventional field respectively. The soil available potassium was only produced in 0 ~ 15 and 60 ~ 90cm soil layers The fields were 5.16% and 11.90% higher than conventional fields, respectively. The average content of soil microbial biomass carbon in high-yielding soil was significantly higher than that in conventional fields. The average content of microbial biomass N, urease activity, catalase and sucrase activity was not significantly different, but both were higher than conventional fields the trend of.