摘要
在蔬菜氮肥长期定位试验条件下分析了不同类型蔬菜生物产量、经济产量及经济（产量）系数的变化以及与土壤肥力的关系，建立了处理条件下的产量变化模型，进一步证明了有机肥与Ｎ素化肥配施的显著增产效果，根据蔬菜的产量效应将试验蔬菜划分为喜Ｎ型蔬菜、忌高Ｎ型蔬菜及Ｎ素敏感性蔬菜３种类型。
Under the condition of long-term and fixed position nitrogen application in vegetable field, the variations of biomass, economic output and economic coefFicient of different type of vegetables were checked.The relationship between the variations and soil fertility were investigated.Models for output variations were estableshed in the experimental situation. Effect of the coordinated application of organic manure and nitrogen fertilizer on yield was remarkable. Based on the yield respose to fertilizing, vegetable crops could be divided into three types:nitrophilous, high level of nitrogen disliking, and nitrogen sensitive. Attention in nitrogen fertilizer application is discussed.
出处
《中国蔬菜》
北大核心
1996年第5期1-5,共5页
China Vegetables
关键词
蔬菜
氮肥
定位施用
生物产量
产量
Vegetables, Long-term and fixed position nitrogen application, Biomass.Economic coefficient
