The use of fertilizer in modern agriculture broke the close circle of nutrient in the traditional farmland ecosystem.
近代农业中化肥的施用打破了传统农业生产体系中封闭的物质循环。
In this paper, the recent researches on the movement and transport of the water, solute, nutrient and bed-load in farmland ecosystem are reviewed and the research prospects in future are pointed out.
对近年来国内外农田生态系统中的水分、溶质和养分迁移的研究工作进行了评述，并指出了需进一步研究的问题。
The energy inputs and their structure, efficiencies, and the relationship between energy input and output in the farmland ecosystem of Jianyang County were studied in this paper.
本文从生态学能量流的角度研究了简阳县不同时期农田系统能量投入量、投能结构，投能效率及能量投入产出关系。
Nitrogen cycling in farmland ecosystem is one of the key factors to affect agricultural productivity and at the same time it affects the environment.
农田生态系统中的氮循环是影响农业生产力的主要因素之一，同时也会对环境产生影响。
The successive variation in ecosystem service value of farmland in Miaodao archipelago from 1950 to 2000 is analyzed by using ecological and economics methods.
利用生态学和经济学统计方法分析了1950-2000年庙岛群岛海岸带农田生态系统服务价值的演替变化。
The development trend of the researches on the water-fertilizer effect on dry land farmland in light of the characteristics of agro-ecosystem was also prospected.
结合农业生态系统特点对未来旱地农业水、肥效应的研究方向进行了展望。
The development trend of the researches on the water-fertilizer effect on dry land farmland in light of the characteristics of agro-ecosystem was also prospected.
结合农业生态系统特点对未来旱地农业水、肥效应的研究方向进行了展望。
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