摘要
从土壤－作物－大气连续体（ＳＰＡＣ）的水分循环出发，以冬小麦为例，通过对土壤水分动态和有关作物生长过程的模拟，建立作物水分消耗与干物质积累和产量形成关系的动力－统计模式．经３年试验资料的验证，总干重、籽粒产量和根层土壤水分含量的平均模拟误差分别为６．３９％，５．６０％和５．４５％．发育期、叶面积动态和干物质积累动态的模拟与实测情况吻合得也较好．
A dynamic statistical model which shows interactions between crop water consumption, biomass production and yield formation has been established based on the simulation of soil water dynamic evolution and some processes of winter wheat growth and development. Through the verification in three years by using the field data, the mean simulated errors for the total weight of dry matter, grain yield and soil water content are 6.39%, 5.60% and 5.45%, respectively. In addition, the simulations about developmental stages, the leaf area index, the process of dry matter accumulation etc. are close to the observed data.
出处
《应用气象学报》
CSCD
北大核心
1997年第4期428-436,共9页
Journal of Applied Meteorological Science
基金
97-6G-04课题
关键词
土壤
作物
大气
连续体
水分循环
作物生产
Soil plant atmosphere continuum(SPAC) Water circulation Crop production Model
