福泉主要梨园土壤养分状况与施肥策略

Soil nutrient states and fertilizing strategy for the main pear orchards in Fuquan city

对贵州省福泉市的主要梨园土壤的养分状况进行测定,结果表明,总体上该地区梨园土壤中有机质含量较为丰富,平均含量高达49.0g/kg;虽然氮、磷总含量平均可分别达1037.3mg/kg、442.5mg/kg,但能被植物吸收的有效含量却偏低,而且分布不均匀,最低碱解氮含量只有12.7mg/kg,最低速效磷含量为2.1mg/kg;少部分果园缺乏土壤交换性钙,近半数较为缺乏交换性镁;锌、硼、铜等微量元素含量丰富,分布也较均匀;不同果园土壤铁和锰含量差异较大。在结果分析的基础上,对梨园提出相应的施肥策略和建议。

According to the investigation and determination on soil nutrients states of the main pear orchards in Fuquan city of Guizhou province. Result shows that, generally, the content of organic matter is abundant that can reach to 49. 0g/kg in this area. Although the average content of N, P can reach to 1 037.3mg/kg, 442.5mg/kg, but their absorbable components lack and exhibit maldistribution obviously. For example, in many orchards, the average alkaline N is only 12. 7mg/kg and only 2. 1mg/kg of the immediate-effective P. The orchard short of exchanged Ca is rare but that short of exchanged Mg is very popular. Generally, there is enough Zn, B, Cu in most orchards investigated but Fe and Mn content distribute in great difference. Based on the results. Some suggestions about fertilizing for the orchards, were put forward.