施肥与环境的关系

从肥料的正效应和负效应两个方面分析了施肥对环境的影响,强调植物不能区分所吸收的养分是来源于化肥还是有机肥。合理施用化肥在提高作物产量和产品质量的同时,还能减少CO2等温室气体的排放和水土流失,增强植物对污染土壤的生物修复,但如果对有机物料管理不善或有机肥施用过量也会造成大气、水源和土壤的污染。在此基础上,以养分资源综合管理为重点,就环境友好的施肥技术途径进行了讨论。

Elementary discussion on relations between fertilization and environment

The effect of fertilizer application on environment is analyzed in both positive and negative aspects and the plants are found unable to distinguish the nutrient source,neither from fertilizer nor from organic fertilizer.A rational application is helpful to strengthen crops'bio-recovery ability to polluted soil,increase the yield,improve the quality,reduce CO2 release as well as soil and water loss,whilst the poor management and abuse of organic fertilizer will result in the pollution of air,water and soil.On the above analysis,the fertilizer application technique friendly to environment is discussed,emphasized on the comprehensive management of nutrient source.