河南农业科学2023，Vol.52Issue(12)：77-87,11.DOI:10.15933/j.cnki.1004-3268.2023.12.009
东海县农田土壤养分状况与肥力评价
Nutrient Status and Fertility Evaluation of Farmland Soil in Donghai County
摘要
Abstract
To clarify the status of farmland soil nutrient in Donghai County of Jiangsu Province,and to provide a basis for rational utilization,improvement of cultivated land and improvement of crop production level,the 0-20 cm soil samples were collected from 11 towns,6 townships and 2 subdistricts in Donghai County,and 14 soil physicochemical indexes such as soil bulk density,pH value and the content of organic matter were measured to characterize the soil nutrient status.The integrated soil fertility index was calculated,and the soil fertility quality grade was evaluated.The results showed that the farmland soil in Donghai County was generally compact,and most of the farmland soil pH value was suitable for the growth of crops,but some soils had an acidification trend.The abundance and deficiency of single fertility indexes of farmland soil in Donghai County were quite different.On the whole,the contents of organic matter,total nitrogen,available potassium,available sulfur,available iron,available manganese,available copper,available zinc and available boron were high or higher,the content of available phosphorus and available silicon were at medium level,and the content of available molybdenum was relatively lower.In general,the farmland soil nutrient status in Donghai County was in good condition,reaching the second level and above.It is suggested that 10.83-62.84 kg/ha phosphorus,110.13-239.10 kg/ha silicon,0.75-4.02 kg/ha zinc,1.43-3.30 kg/ha boron and 0.22-0.32 kg/ha molybdenum should be applied to farmland soil in Donghai County before planting crops.Among them,Shilianghe Town and Shihu Township do not need supplement zinc fertilizer for sufficience.Zinc fertilizer and boron fertilizer in Tuofeng Township and Linian Township do not need supplement.Each township should adjust appropriately according to the regional characteristics.In the later stage of crop planting,the farmland soil in Donghai County should continue to optimize the fertilization structure according to the change of fertility,so as to better play the potential of soil production.关键词
农田土壤/土壤养分/相关系数法/土壤肥力综合指数/地力定量提升/东海县Key words
Farmland soil/Soil nutrient/Correlation coefficient method/Integrated soil fertility index/Quantitative improvement of soil fertility/Donghai County分类
农业科技引用本文复制引用
沈玥,李倩怡,赵文慧,王桂良,钱晓晴..东海县农田土壤养分状况与肥力评价[J].河南农业科学,2023,52(12):77-87,11.基金项目
国家重点研发计划课题(2017YFD0200107) （2017YFD0200107）
