半干旱区作物生长系统的CTM模型与系统模拟效果分析

CTM Model and System simulation of Crop Growth systems in Semi—arid Regions

本文农田系统工程的理论和方法,以在定西半干旱地区所进行的春小麦大田多项试验为依据,以提高作物产量为目的,建立了作物生长系统的CTM模型和模拟方法。并对作物生长过程中光照、温度、土壤水分和养分等多维资源利用情况进行了系统分析。对不同水分和肥力条件下的作物生长进行了系统模拟和效果分析,从而为半干旱区作物生长系统的人工调控和选优提供了理论模式和定量依据。

By application of the theory and method of farmland system engineering, a CTM model and simulation methodology for crop growth systems in Dingxi semi-arid areas was constructed in this paper . The purpose of this approach is to enhance the yield of the crops on the basis of field experiments of spring wheat. Resource utilization during the growth period of the crop, including light, temperature, soil moisture, and nutrients were analysed. System simulation was conducted and the crop growth under various combinations of water and soil fertility was analysised. Thus the study provided a theoretical model and quantitative basis for artificial control and regulation and optimum selection of crop growth system in semi -arid regions.