期刊论文

Soil Nutrient Status of Citrus Orchard and Its Effects on Nutrients in Citrus Leaf in Hunan Province

中文

土壤

0253-9829

2019

51

4

665-671

10.13758/j.cnki.tr.2019.04.006

现代农业(柑橘)产业技术体系专项基金项目(CARS-27)资助。

本校为第一机构

为了解湖南省柑橘园土壤及叶片养分丰缺状况,对湖南省82个柑橘主产区土壤和植株叶片的矿质元素含量进行分析测试,运用曲线回归方法分析了土壤酸碱性与土壤肥力间相关性,采用典型性相关分析方法研究了土壤与叶片养分的定量统计关系。结果表明:全省86.75%的柑橘园土壤pH为酸性至强酸性,78.31%的土壤有机质含量处于适宜水平,有效氮、磷、钾缺乏土壤比例分别为15.66%、69.88%和27.71%,柑橘叶片全氮、磷、钾缺乏比例分别为12.35%、16.05%和18.52%。曲线回归分析结果显示,土壤养分含量与pH存在密切的关系,土壤有机质(Y_1)、碱解氮(Y_2)、有效磷(Y_3)、速效钾(Y_4)与pH(X)的拟合关系分别为:Y_1=2.15X~2...

In order to provide references for reasonable fertilization and leaf nutrient diagnosis in orchards, soil and citrus leaf samples were collected and measured from 82 citrus orchards in Hunan Province, the method of curve regression was used to analyze the correlation between soil pH and nutrients, the method of typical correlation analysis was used to explore the quantitative statistical relation between the nutrients in soil and citrus leaves, and then nutrient deficiencies in soils and citrus leaves were evaluated. The results showed that 86.75% of soil samples were acid or strongly acid, 78...