论文部分内容阅读
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《土壤分析技术规范》标准对土壤p H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。
Soil nutrient status is an important indicator of soil fertility, but also the main basis for scientific fertilization. According to the soil testing and fertilization project in 2005 in Jiajiang County, 3950 soil samples were collected from Jiajiang County according to the Ministry of Agriculture Standard. Soil p H value, organic matter, total nitrogen, available nitrogen , Available phosphorus, available potassium six indicators were tested and compared with the second soil census data Jiajiang County, analysis of soil nutrient changes in the reasons for the development of improved strategies to provide a scientific basis for scientific fertilization and soil improvement in the county .