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首页> 外文期刊>African Journal of Biotechnology >New approach for regional crop yield gap analysis in the Borujen Plain, Iran
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New approach for regional crop yield gap analysis in the Borujen Plain, Iran

机译：伊朗Borujen平原进行区域作物单产差距分析的新方法

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This study was performed to analyze the regional crop yield gap for potential and water-limited production situations in the cold-semiarid climate at Borujen basin, Iran. Experimental data were used for model calibration and evaluation of WOFOST as a crop growth simulation model. WOFOST divides wheat growth into three key development stages: 1) emergence, 2) flowering and 3) physiological maturity. The length of growth period and phenology was calibrated using the field experiments results. In general, simulated results matched well with the measured parameters in the calibration procedure. Calibrated results of WOFOST model are linked to a geographic information system, in order, to get easier their presentation and also to contribute to identification of hotspots for interventions aimed at yield improvements. Finally, the results of quantitative analysis (yield estimation in different wheat cropping systems) performed on four different agro-ecological zones, include:?1) yield gaps = 4.2 to 6.2 Mg/ha, 2) yield gaps = 3 to 3.6 Mg/ha, 3) yield gaps < 2.4 Mg/ha, and 4) is unsuitable area. This yield gap between potential and rainfed production system is due to rainfall period during spring when temperature is not a limiting factor for wheat growth. Borujen Basin has semiarid climatic conditions with cold winter and winter precipitation. For the sake of it, temperature was a decisive factor during rainfall seasons, limiting the crop growth period. This study demonstrates that WOFOST model can be used to analyze cropping systems and accurately simulate regional wheat yields in cold semi arid climates.
机译：进行这项研究是为了分析伊朗博鲁仁盆地冷半干旱气候下潜在和限水生产情况下的区域作物产量缺口。实验数据用于作物生长模拟模型的WOFOST模型校准和评估。 WOFOST将小麦的生长分为三个关键的发育阶段：1）出苗，2）开花和3）生理成熟。使用田间实验结果校准了生长期和物候的长度。通常，模拟结果与校准过程中的测量参数非常匹配。 WOFOST模型的校准结果链接到地理信息系统，以便更轻松地呈现它们，并有助于识别热点，以进行旨在提高产量的干预措施。最后，对四个不同的农业生态区进行的定量分析结果（不同小麦种植系统中的单产估算）包括：？1）产量差距= 4.2至6.2 Mg / ha，2）产量差距= 3至3.6 Mg / ha，3）产量差距<2.4 Mg / ha和4）是不合适的面积。潜力和雨养生产系统之间的这种产量差距是由于春季的降雨时期，此时温度不是限制小麦生长的因素。博鲁仁盆地气候半干旱，冬季寒冷，冬季降水少。因此，温度是降雨季节的决定性因素，限制了作物的生长期。这项研究表明，WOFOST模型可用于分析种植系统并准确模拟寒冷半干旱气候下的区域小麦单产。

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