摘要
为全面了解平顶山市耕地土壤养分状况,对全市5个县(市)65乡(镇)耕地土壤养分进行分析,结果表明:全市耕地土壤pH值以及有机质、全氮、有效磷、速效钾、缓效钾平均值依次为5.74、23.62 g/kg、1.26 g/kg、25.01 mg/kg、130.72 mg/kg、727.31 mg/kg,pH、速效钾、缓效钾均有所下降,有机质、全氮、有效磷均有所提升。全市耕地土壤总体较为酸化,有效磷、速效钾在区域分布上有较大的差异;各县(市)耕地土壤养分状况既存在一定差异性,又存在一定共同性。郏县及宝丰县耕地土壤养分状况总体上优于其他县(市);65乡(镇)聚类分析为三类,分别包括19、32、14个乡(镇),第一、三类区域分布相对集中,第二类区域分布较为分散。三类区域耕地土壤养分有一定的差异,全氮、有效磷在三类区域上均达到显著性差异,第一类耕地土壤养分状况较好。对此,进一步提出了有针对性的建议。
To fully understand the cultivated soil nutrient status in Pingdingshan City,the cultivated soil nutrient status in 65 towns of 5 counties of Pingdingshan City were investigated and analyzed.The result were as follows:The average of pH value,OM,TN,AP,AK,SAK content of the cultivated soil in Pingdingshan City were 5.74,23.62 g/kg,1.26 g/kg,25.01 mg/kg,130.72 mg/kg,727.31 mg/kg.The average of pH value,AK and SAK contents declined,and the average of OM,TN,AP contents increased.The cultivated soil were relatively acidified,the AP,AK showed great difference in regional distribution.The status of cultivated soil nutrient index in counties had not only difference,but also commonality.The cultivated soil nutrient status in Jia and Baofeng counties were better than others.Cluster analysis of 65 towns is divided into three categories,the first category,including 19,32,14 towns.The first and the third categories were relatively concentrated,while the second category is relatively scattered.There are some differences in soil nutrients among the three types of cultivated land,and there are significant differences in total nitrogen and available phosphorus among the three types of cultivated land.The cultivated soil nutrients of the first category were in good condition.In this regard,further targeted suggestions are put forward.
作者
王校辉
WANG Xiaohui(Pingdingshan Soil Fertilizer Workstation,Pingdingshan 467000,China)
出处
《东北农业科学》
2021年第3期37-40,共4页
Journal of Northeast Agricultural Sciences
基金
河南省农业资源及生态保护项目(2130135)。
关键词
耕地
土壤养分
状况
聚类分析
平顶山市
Cultivated soil
Soil nutrient
Status
Cluster analysis
Pingdingshan City
