核桃晚霜冻害调查新方法的研究与应用

Research and Application on a New Method for Investigation of Late Frostbite of Walnut

为了在晚霜冻害发生时对核桃冻害情况做出准确调查,为灾年估产提供准确的统计数据,为政府职能部门制定防治措施及核桃生产栽培提供理论依据,本研究对现有核桃晚霜冻害调查方法做了改进,明确了调查性状、统一了分级标准,通过将核桃晚霜冻害样本资料数据化,并建立冻害性状调查统计分析表,再以预设标准化数据为参考来确定调查性状的冻害指数和冻害等级,解决了目前核桃晚霜冻害调查性状和冻害等级标准不统一、调查方法可操作性差、不同调查人员人为主观判断较多、误差较大等问题。

In order to make an accurate investigation of walnut frost damage in time after late frost damage, provide accurate statistical data for yield estimation in disaster years, and provide theoretical basis for government departments to formulate control measures and walnut production and cultivation, an existing investigation methods of late frost damage of walnut were improved in this study. The investigation characters were clarified, the classification standard was unified, the sample data of late frost damage of walnut were processed, and the statistical analysis table of freezing damage traits was established. Then, the freezing damage index and freezing damage grade of the investigation characters were determined by using the preset standardized data as reference, which solved the problems on the disunity of the standards of the characters and grades of the frost damage, the poor operability of investigation methods, the subjective judgment of different investigators and the large error.