摘要
提出了农田五水(降水、土壤水、地表水、地下水与作(植)物水)的系统概念,讨论了SPAC(土壤-植物-大气)系统中水分运动过程.内容包括SPAC界面水分通量.基于SPAC界面水分耗散与调控研究,提出了农艺节水模式与应用效果.旨在推进农业节水中应用低成本高效益的农艺节水理论与技术.
Authors have conducted theoretical and practical studies on water saving in agriculture over the last decade. This paper dealt with the connotation of ＂Five Water Types＂ （air, soil, plant, surface water and groundwater） interactions in farmlands. Based on this connotation, authors discussed water interactions in soil, plant and atmosphere, as coupling system of soil-plant-atmosphere continuum （SPAC）. Considering field water saving, authors presented an approach to control water fluxes through SPAC interface. Based on system integration, models for water saving were suggested for application. Data show that decreasing water consumption while increasing yield can be achieved.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第5期446-451,共6页
Journal of Beijing Normal University(Natural Science)
基金
“十一五”国家科技支撑计划资助项目(2006BAB06B07)
关键词
五水转化
SPAC
界面水分通量
节水农业
界面水分调控
water interactions
soil-plant-atmosphere continuum （SPAC）
interface water fluxes
water saving agriculture
interface control
