东营枣区枣园土壤养分分类的研究

目的]研究东营枣区枣园土壤养分的分类,为枣园测土配方施肥提供依据。方法]在东营枣区采集有代表性的334份土壤样品,根据聚类分析的原理,通过对土壤样品10个营养指标的主成分分析后,运用SAS统计软件对土壤样品的有效氮、速效磷、速效钾、有机质共4项主要土壤营养指标进行聚类分析。结果]根据土壤养分情况,东营枣区枣园土壤可分为4类,①低氮中磷中钾类型,占总土样的52.10%;②低氮中磷高钾类型,占总土样的31.14%;③低氮高磷高钾类型,占总土样的13.77%;④中氮中磷高钾类型,占总土样的2.10%。结论]通过对枣区枣园土壤分类,在生产上可有针对性地调整氮磷钾及有机肥的施用比例,以达到合理科学平衡施肥,提高肥料利用率。

Study on Classification of Soil Nutrient in Jujube orchard in Donging Jujube Region

Objective] The study aimed to research the classification of soil nutrient in jujube orchard in Donging jujube region so as to provided the basis for the formula fertilization through the soil determination. Method] The representative 334 soil samples were selected in Donging jujube region. Based on the principle of the cluster analysis, the 4 main nutrient indexes of available N, available P, utrient indexes of mination for the he resistance on mt and applicationavailable K, organic matter of the soil samples were made for the cluster analysis by using the SAS statistical software after analyzing the main component of 10 nutrient indexes of the soil samples. Result] According to the soil nutrient, the soil in Donging jujube region could be classified into 4 types by cluster analysis method:TypeⅠ, low N, middle P and middle K, accounting for 52.10% of total soil sample ; TypeⅡ, low N, middle P and high K, accounting for 31.14% of total ; Type Ⅲ, low N, high P and high K, accounting for 13.77%% of total; Type Ⅳ, middle N, middle P and high K, accounting for 2.10% of total. Conclusion] After the classification of soil nutrient in jujube orchard in Donging jujube region, the application ratio of N, P, K fertilizer and the organic fertilizer could be adjusted purposefully in the production so as to realize the rational and scientific balance fertilization and increase the using rate of fertilizers.