夹江县土壤养分变化趋势及施肥改良对策

摘要

Soil nutrient status is an important indicator of soil fertility,as well as the main basis for scientific fertilization. In this paper,testing soil formula fertilization project in Jiajiang County has been done in 2005.3950 soil samples have been taken in Jiajiang County according to the Ministry of Agriculture standards. The pH value,organic matter,total nitrogen,available nitrogen,phosphorus,potassium six indicators of those soil samples have been tested according to Soil Analysis Technical Specifications standard,then compared with Jiajiang’s second soil survey datas,analyzed the causes of changes in soil nutrients.In finally,formulated the countermeasures,in order to provide the scientific basis for scientific fertilization and soil improvement.%土壤养分状况是土壤肥力的重要指标，也是科学施肥的主要依据。该文通过夹江县2005年测土配方施肥项目，根据农业部标准对夹江县范围内土壤采样3950个，按照叶土壤分析技术规范》标准对土壤pH值、有机质、全氮、速效氮、有效磷、速效钾6个指标进行测试，并与夹江县第二次土壤普查数据比对，分析土壤养分变化的原因，制定了改良对策，从而为全县科学施肥和土壤改良提供科学依据。