摘要
针对苏南太湖流域无机化、高氮量施肥方式 ,造成氮肥利用率下降、水环境污染日益严重这种现象 ,研究了不同氮肥施用水平下水稻的产量、氮肥利用率及氮肥水环境损失。并在以下研究结果的基础上 ,引入环境经济学的 Coase原理和农业技术经济学的边际收益分析原理求得 ,2 2 1 .5～ 2 61 .4 kg N/hm2 为苏南太湖流域目前生产条件下 ,兼顾生产、生态和经济三效益比较合理的水稻施肥量 ,相应的经济、生态适宜产量为 7379.6～ 7548.
In Tai Lake watershed the crop yield increasing has been more and more depended upon the increasing application of chemical fertilizer.The nitrogen utilization efficiency(NUE) has greatly decreased,and the water in Tai Lake is more and more polluted.We studied the rice yield,nitrogen utilization efficiency,nitrogen leaching amount at different level of nitrogen fertilizer using in paddy rice field.The results show that with the Coase Theory of Environmental Economics and the Marginal Revenue Analysis Theory of Agricultural Technology Economics,the ecological and economic satisfactory amount of nitrogen fertilizer using on rice was obtained as 221 5～261 4kg/hm\+2 under the condition of the existing agricultural production technology.
出处
《生态学报》
CAS
CSCD
北大核心
2000年第4期658-662,共5页
Acta Ecologica Sinica
基金
"八五"国家教委博士点基金资助
关键词
氮肥
水稻
施用量
产量
综合效益
Tai Lake Watershed
nitrogen
economic and ecological
fertilizer using
