基于APSIM模型的旱地小麦和豌豆水肥协同效应分析

草业学报 ›› 2011, Vol. 20 ›› Issue (5): 151-159.

基于APSIM模型的旱地小麦和豌豆水肥协同效应分析

李广^1,2,黄高宝^3*,王琦^4,5,罗珠珠⁶

1.甘肃省干旱生境作物学重点实验室甘肃农业大学,甘肃兰州 730070;
2.甘肃农业大学信息科学技术学院,甘肃兰州730070;
3.甘肃农业大学农学院,甘肃兰州 730070;
4.甘肃农业大学草业学院,甘肃兰州 730070;
5.中国科学院寒区旱区环境与工程研究所青藏高原冰冻圈观测研究站,甘肃　兰州 730000;
6.甘肃农业大学资源与环境学院,甘肃兰州 730070

出版日期:2011-10-20 发布日期:2011-10-20
通讯作者: E-mail:Huanggb@gsau.edu.cn
作者简介:李广(1971-),男,内蒙古化德人,教授,博士。
基金资助:
国家自然科学基金项目(31060178)和甘肃省自然科学基金项目(096RJZA010,1010RJZA185)资助。

Analysis of cooperation effect of water and fertilizer on wheat and pea in dryland based on APSIM model

LI Guang^1,2, HUANG Gao-bao³, WANG Qi^4,5, LUO Zhu-zhu⁶

1.Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China;
2.College of Information Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
3.College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China;
4.College of Grassland Science, Gansu Agricultural University, Lanzhou 730070, China;
5.Cryosphere Research Station on Qinghai-Xizang Plateau, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
6.College of Resource and Environment Science, Gansu Agricultural University, Lanzhou 730070, China

Online:2011-10-20 Published:2011-10-20

摘要/Abstract

摘要： 为探索水肥协同作用对作物产量影响的机制和规律,在田间试验的基础上调试APSIM模型参数,并对模型进行检验,然后用该模型模拟近30多年来研究区的小麦/豌豆产量,并采用多元回归方法分析了施N量(X₁)、生育期降水量(X₂)和休闲期降水量(X₃)对小麦/豌豆模拟产量的协同效应。结果表明,APSIM模型可以准确用来模拟小麦和豌豆的产量;小麦和豌豆产量的影响因子程度均为:生育期降水量(X₂)＞休闲期降水量(X₃)>>施N量(X₁);施N量(X₁)对小麦产量影响在一定程度会出现报酬递减效应,小麦阈值为65.0 kg N/hm²、豌豆阈值17.9 kg N/hm²;小麦和豌豆产量影响因素的协同效应为:X₂X₃>>X₁X₃>X₁X₂,生育期降水和休闲期降水协同效应为显著,远大于其他因子的协同效应。在黄土丘陵区降水量对作物产量的影响远大于肥效作用,同时水肥协同效应对产量具有重要的影响。

Abstract: In order to explore the influence mechanism and regulation of the cooperation effect of water and fertilizer on yields of crops, APSIM (agricultural production system simulator) model and multiple regressions were used to explore the cooperation effect of water and fertilizer on yields of rotation system with wheat (Triticum aestivum) and pea (Pisum sativum) in loess hilly region of China. The parameters of APSIM model were firstly modified and then verified according to the data collected from field experiment. APSIM model was used to simulate yields of rotation system with wheat and pea within 30 years. The results showed that APSIM model can be used to simulate yields of rotation system with wheat and pea. The order of effect on yields of rotation system with wheat and pea is precipitation of growing stage (denote X₂)>precipitation of fallow period (denote X₃)>nitrogen fertilizer application (denote X₁). There was a diminishing return of nitrogen fertilizer application on yield of wheat. The optimum nitrogen rate was 65.0 kg/ha and 17.9 kg/ha, respectively. The order of cooperation effect on rotation system with wheat and pea is X₂X₃>>X₁X₃>X₁X₂. Cooperation effect of precipitation of growth stage and precipitation of fallow period was higher than others cooperation effect. Precipitation has a higher effect on crops yields than fertilizer application. At same time, cooperation of precipitation and fertilizer had a high effect on crops yields.

中图分类号:

李广,黄高宝,王琦,罗珠珠. 基于APSIM模型的旱地小麦和豌豆水肥协同效应分析[J]. 草业学报, 2011, 20(5): 151-159.

LI Guang, HUANG Gao-bao, WANG Qi, LUO Zhu-zhu. Analysis of cooperation effect of water and fertilizer on wheat and pea in dryland based on APSIM model[J]. Acta Prataculturae Sinica, 2011, 20(5): 151-159.

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