甘肃油橄榄园土壤养分丰缺状况

Condition of abundance or deficiency of soil nutrient of olive orchard in Gansu Province

为了给油橄榄园土壤管理和合理施肥提供参考,通过对陇南白龙江沿岸低山河谷地区有代表性的126个油橄榄园的土壤进行取样测定,在前人研究的基础上,确定了甘肃油橄榄园土壤养分标准,并用该指标评价了果园土壤养分肥力的丰缺情况。结果表明:陇南油橄榄产区土壤肥力普遍存在的问题是有机质含量低,碱解氮、有效磷和速效钾亏缺,且各营养元素之间存在不同程度的差异;土壤p H值对土壤养分有效性影响较大,土壤p H值与有机质、碱解氮、有效磷含量呈显著或极显著负相关。

In order to provide a reference for soil management and rational fertilization of olive orchard, soil was sampled and determined in 126 typical olive orchard, which located in low mountain valley of Bailong River coastwise of Longnan, on the basis of previous research results, the soil nutrient standards in olive orchard of gansu were determined, condition of abundance or deficiency of soil fertility in orchard was evaluated with the indexes. The result showed that soil fertility at olive producing areas of Longnan existed the common problems of low organic matter content, deficiencies of available nitrogen, available phosphorus and quick-acting potassium, and differences of each nutrient element content at different degrees. Soil pH value had significant impact on effectiveness of soil nutrients, and it had significant or very significant negative correlation with the contents of organic matter, available nitrogen, and available phosphorus.