论文部分内容阅读
利用近50年黄淮地区54个农业气象观测站的作物观测资料和气象资料,结合人工移动式霜箱试验结果,研究了WOFOST作物模型中增加晚霜冻影响的处理技术,揭示了晚霜冻对冬小麦各生长量的影响结果。利用修改后的作物模型提取晚霜冻灾损评估技术,建立以晚霜冻的危险性、暴露性和脆弱性为风险因子的风险评估模型,开展黄淮区域晚霜冻风险评估。结果表明,黄淮区域冬小麦晚霜冻风险分布呈西高东低分布,高风险地区主要分布在黄淮区域的河南西部、西南部、西北部及东部永城、沈丘一带。其中,黄淮西部的高风险主要是由晚霜冻高灾损引起的,河南西南部的高风险是由晚霜冻的高频率引起的,其西北部和东部的高风险则是由晚霜冻的高频率和高灾损共同引起的。
Based on the crop observation data and meteorological data of 54 agrometeorological observation stations in the Huanghuai region in recent 50 years and combined with the artificial mobile frost box test results, the treatment technology of adding the late frost in the WOFOST crop model was studied. The effects of night frost on winter wheat The impact of the growth of the results. A modified crop model was used to extract late frost damage assessment techniques and a risk assessment model was constructed based on the risk of late frost, its exposure and vulnerability as risk factors, and the risk assessment of late frost in Huanghuai area was carried out. The results showed that the risk distribution of winter wheat frost in the Huanghuai region was low in the west and east, and the high-risk areas were mainly distributed in the west, southwest and northwest of the Huanghuai region, and Yongcheng and Shenqiu in the east. Among them, the high risk in western Huanghuai region is mainly caused by the high damage of night frost. The high risk in southwestern Henan is caused by the high frequency of night frost. The high risk in the northwestern and eastern regions is caused by the high night frost Frequency and high damage together.