摘要
向日葵和马铃薯间作是我国北方农牧交错带的一种重要种植方式,准确模拟其间套作的发育时期对评价和优化间套作种植具有重要意义.以生理发育时间为基础建立了向日葵和马铃薯单作、间作的生育期模拟模型,并利用2010—2011年的大田试验数据对模型进行检验.结果表明:生育期模拟值与观测值的符合度较好,播种—出苗期、出苗—开花期、开花—成熟期和全生育期的均方差根(RMSE)分别为1.2、2.9、2.4和2.6d,误差<5%.模型既有较强的机理性,又有较好的适用性,为探索间套作条件下作物的生长发育规律提供了良好工具.
Potato-sunflower intercropping is a prevailing cropping system in the agricultural and pastoral ecotone in China.To precisely simulate the crop phenology in the intercropping system is of significance for the assessment and optimization of intercropping systems.In this paper,the simulation model for the development stages of sunflower and potato in monoculture and intercropping was established,based on the crop＇s physiological development time,and validated with the field experimental data from 2010 to 2011.A good fitness was observed between the simulated and observed values of the crop＇s development stages.The root mean square error （RMSE） of the development stages from sowing to emergence,emergence to flowering,flowering to mature,and from sowing to mature was 1.2,2.9,2.4 and 2.6 d,respectively,with the prediction error lower than 5%.The model was strong on mechanistic,explanation and adaptability,and could be applied as a good tool in the researches of crop growth and development.
出处
《应用生态学报》
CAS
CSCD
北大核心
2012年第10期2773-2778,共6页
Chinese Journal of Applied Ecology
基金
"十二五"国家科技支撑计划项目(2012BA009B00)资助
关键词
间套作
马铃薯
向日葵
热效应
作物模型
intercropping
potato
sunflower
thermal effect
crop model.
作者简介
苟芳，女，1985年生，硕士研究生．主要从事间套作资源高效利用和间套作模型研究．E—mail：goufang041@163．com
通讯作者．E—mail：zhanglizhen@cau．edu．cn
