库尔勒市香梨园土壤肥力评价

Soil fertility evaluation of fragrant pear orchard in Korla City

为了掌握库尔勒市香梨园土壤肥力的基本情况,从而为香梨施肥与生产提供科学指导,应用GIS技术和模糊综合评价法,从库尔勒全市中选取100个香梨园,对其土壤肥力情况进行了调查与评价。结果表明:库尔勒市香梨园土壤肥力水平普遍较低,土壤肥力水平主要分布在3级和4级,这两个肥力等级的香梨园面积占所调查的香梨园总面积的81.89%;香梨园土壤肥力的主要障碍因素是有机质、全氮和碱解氮,其含量均处于相对较低水平,并伴有轻度盐化作用。文中的评价结果,可用以指导香梨的优化平衡施肥,提高库尔勒香梨园土壤生产力。

In order to grasp the basic situation of soil fertility of fragrant pear orchard in Korla City and scientifically guide the fertilization and production of fragrant pear, soil fertility of 100 fragrant pear orchards in Korla City were investigated and evaluated, through applying GIS technology and fuzzy comprehensive evaluation method. The results showed that：the soil fertility levels of fragrant pear orchards in Korla City were general low, and were mainly distributed at the third and fourth grades, which accounting for 81.89%of the total area of investigated fragrant pear orchards. The major influencing factors of soil fertility of fragrant pear orchards were contents of organic matter, total N and alkali-hydrolyzable N, and they were all at relatively low levels, and accompanied with low-grade salinization. The evaluation results can guide the balanced fertilization of fragrant pear orchard and improve soil productivity of fragrant pear orchard in Korla.