长期偏施氮肥对露地土壤—蔬菜生态系统变化的影响  

The Effects of Partial Long term Nitrogen Fertiliaer Application on Soil vegetable Ecological System

作　　者：葛晓光[1] 王晓雪[1] 张昕[1] 张恩平[1] 刘秀茹[1] 

机构地区：[1]沈阳农业大学园艺系,沈阳110161

出　　处：《园艺学报》2000年第4期263-268,共6页Acta Horticulturae Sinica

基　　金：国家自然科学基金资助项目! (39970 5 1 5 )

摘　　要：阐述了不同水平有机肥及无机N肥长期定位施用对露地土壤 -蔬菜生态系统变化的影响 ,明确指出长期偏施N肥明显地破坏该系统的结构 ,降低系统的功能 ,配施有机肥可在一定程度上得到改善 ,但在土壤肥力提高到一定水平后应增施P、K肥 ,防止土壤养分平衡的失调。The effects of long term organic and inorganic nitrogen fertilizer(2 facters,3 levels) application on vegetable soil ecological system were discussed in this paper.The structure and function of soil vegetable system were significantly influenced by partial long term nitrogen fertilization.The soil productivity was increased obviously by fertilizing chemical nitrogen in combination with organic manure.But under the conditon of high level of organic manure application phosphorus,potassium fertilizers should be applied in order to keep the soil nutrition balance.

关 键 词：施肥 土壤 蔬菜 生态系统 产量 土壤养分 氮肥 

分 类 号：S630.6[农业科学—蔬菜学] S154.4[农业科学—园艺学]