WOFOST作物模型在拉林河流域的适用性研究

陈 浩; 洪 林; 罗德伟

引用本文:	陈浩,洪林,罗德伟.WOFOST作物模型在拉林河流域的适用性研究[J].灌溉排水学报,2017,36(3):.
	CHEN Hao,HONG Lin,LUO Dewei.WOFOST作物模型在拉林河流域的适用性研究[J].灌溉排水学报,2017,36(3):.

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WOFOST作物模型在拉林河流域的适用性研究
陈浩，洪林，罗德伟
武汉大学水资源与水电工程科学国家重点实验室，武汉 430072；中国电建集团昆明勘测设计研究院有限公司，昆明 650033； .襄阳市环境保护监测站，湖北襄阳 441021

摘要:

为了解WOFOST作物模型对拉林河流域春玉米的适用性，以东北地区哈尔滨、双城、尚志、扶余等地春玉米为研究对象，建立模型运行所需的气候、土壤、作物数据库，模拟2013年春玉米发育期日序变化、2009年土壤含水率的变化、2009年哈尔滨站春玉米生物量累积过程以及2009―2013年春玉米产量，并与实测值进行对比分析。结果表明，生育期平均绝对误差MAE=1.57 d，标准差σ=1.54 d，均方根误差RMSE=1.85 d；土壤含水率MAE在1.38%～1.75%之间，RMSE在1.87%～2.33%之间，模型效率指数MEI在0.48～0.73之间；叶干质量、茎干质量、穗干质量的MEI在0.82～0.94之间，产量RMSE和MEI分别为0.72 t/hm2和0.15。各适用性指标均在可信范围内，表明经过参数校准后的WOFOST模型在拉林河流域具有一定的适用性。

关键词: 模型；春玉米；发育阶段；土壤含水率；生物量；产量

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Application Research of Crop Growth Model WOFOST in Lalin River Basin

CHEN Hao， HONG Lin， LUO Dewei

State Key Lab of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China;Hydrochina Kunming Engineering Corporation Limited, Kunming 650033, China； Environmental Monitoring Station of Xiangyang City, Xiangyang 441021, China.

Abstract:

In order to evaluate the applicability of crop growth model WOFOST in simulation of spring maize growth stages in Lalin basin in northeastern China, 4 irrigation experiment stations (Haerbin, Shuangcheng, Shangzhi and Fuyu) were selected to establish the climate, soil, crop databases of the model. The growing stages of spring maize in 2013, biomass accumulation process in Haerbin station in 2009, spring maize yield in the four stations between 2009 and 2013, and the soil water content in the four stations in 2009 were simulated using the model, and compared with the measured values. The results showed that the MAE of DOY was 1.57 d, standard deviation was 1.54 d, RMSE was 1.85 d; the MAE of soil water content was between 1.38% and 1.75%, the RMSE was between 1.87% and 2.33%, and the MEI was between 0.48 and 0.73; the MEI of leaves, stems, ears dry matter was between 0.82 and 0.94, and the RMSE and MEI of yield were 0.72 t/hm2 and 0.15, respectively. The above applicable indexes were all in range of credible which proved that the corrected WOFOST crop model had certain applicability in spring maize production areas in northeastern China.

Key words: model; spring maize; DVS; soil water content; biomass; yield