改变土壤含水量影响的冬小麦根和冠生长动态模型  

Dynamic growth model for root and shoot of winter wheat considering the influence of soil moisture

作　　者：杨贵羽[1] 罗远培[2] 李保国[1] 陈晓远[2] 

机构地区：[1]中国农业大学资源与环境学院,北京100094 [2]中国农科院气象研究所,北京100081

出　　处：《水利学报》2004年第7期64-69,共6页Journal of Hydraulic Engineering

基　　金：国家基础研究发展规划项目(G1999011700);国家自然科学基金项目(49971042)

摘　　要：本文根据系统动力学原理,以土壤水分为环境因素,冬小麦为研究对象,从植株整体角度建立土壤含水量影响下的冬小麦根、冠生长的动态模型。根、冠作为植株的两大功能互补系统,在不同的土壤含水量作用下,二者产生不同响应,通过模型可定量揭示根、冠二者的生长变化规律。本文模拟结果表明:根系生长在分蘖期和拔节期受土壤含水量影响较大;而冠的生长则是在孕穗期到灌浆期影响较明显,但含水量的变化并不改变植株的总体生长规律。Based on the principle of system dynamics a model describing the growth of the root and shoot of winter wheat considering the influence of soil moisture is established.The quantitative growth laws responding to different moistures both for root and shoot are revealed.It is found that soil moisture affects the growth of root remarkably during tillering and jointing stage and affects the growth of shoot during booting and grouting stage.But the variation of soil moisture will not affect the general growth law of the plant.

关 键 词：动态生长模型 土壤含水量 根 冠 

分 类 号：S152.7[农业科学—土壤学]