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首页> 外文会议>2011 19th International Conference on Geoinformatics >Evaluation of wind-induced lodging risk for maize cultivar based on GIS
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Evaluation of wind-induced lodging risk for maize cultivar based on GIS

机译：基于GIS的玉米品种风倒伏风险评价。

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摘要

Lodging in maize causes severe yield loss annually. In this study, a total of 687 growing counties in or near Huang-Huai-Hai Plain, China were chosen as study area. First, cultivar lodging resistance was determined based on frequency distribution analysis using the data of national regional trials for maize cultivar in recent 9 years. Then, environment lodging stress was assessed based on probability analysis of extreme wind event in maize vegetative stage using meteorology data in recent 59 years. Last, lodging risk was evaluated combining cultivar lodging resistance with local environment lodging stress. Cultivars NH1101 and Xianyu 335 were taken as examples and the results analyzed with GIS indicated that lodging risk related not only to local environment lodging stress but also to cultivar lodging resistance. It can facilitate the identification of high-risk growing environments so as to reduce the risk and loss of lodging in maize.
机译：玉米倒伏每年造成严重的产量损失。在本研究中，选择了中国黄淮海平原或其附近的687个生长县作为研究区域。首先，基于频率分布分析，使用最近9年全国玉米品种国家区域试验的数据，确定了品种抗倒伏性。然后，利用最近59年的气象数据，基​​于玉米营养期极端风事件的概率分析，评估了环境倒伏压力。最后，结合品种抗倒伏能力和当地环境的倒伏压力来评估倒伏风险。以NH1101和咸榆335品种为例，GIS分析结果表明，倒伏风险不仅与当地环境倒伏胁迫有关，而且与品种倒伏抗性有关。它可以帮助识别高风险的生长环境，从而降低玉米中倒伏的风险和损失。

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