高级检索+

黑龙江省大豆渍害影响定量评价指标构建

Construction of quantitative evaluation index of impact of soybean waterlogging in Heilongjiang Province

  • 摘要: 基于1984~2022年黑龙江省大豆种植区73个气象站对应县(市)渍害灾情史料、大豆产量资料及27个农业气象站大豆生育期资料,应用统计分组法构建大豆渍害样本减产率序列。通过柯尔莫哥罗夫-斯米尔诺夫检验和置信区间阈值法,建立黑龙江省大豆渍害减产率等级指标并以预留的渍害样本验证指标。结果表明,大豆轻度、中度和重度渍害减产率下限值于出苗三真叶期分别为5.6%、10.3%、14.7%,于开花结荚期分别为6.2%、9.3%、14.2%。指标评价判识结果和历史灾情记录度吻合率达84%,可应用于黑龙江省大豆渍害影响定量评价。构建黑龙江省大豆不同生育期渍害影响定量评价指标,有助于实现黑龙江省大豆渍害影响评价量化。

     

    Abstract: Based on historical data of waterlogging and yield data of soybean in the corresponding counties(cities) of 73 meteorological stations in Heilongjiang Province from 1984 to 2022, and growth period data of soybean of 27 agricultural meteorological stations, the sequences of yield reduction rate of soybean waterlogging samples were constructed by statistical grouping method. The methods of Kolmogorov-Smirnov test and confidence interval threshold were used, the grade indices of yield reduction rate of soybean waterlogging in Heilongjiang Province were established. The results showed that the lower limits of yield reduction rate in light, moderate and severe were 5.6%, 10.3% and 14.7% at the stages of seedling emergence and three true leaves, 6.2%, 9.3% and 14.2% at the stages of flowering and podding, respectively. The coincidence rate between the index evaluation results and the historical disaster records was 84%, which could be applied to the quantitative evaluation of impact of soybean waterlogging in Heilongjiang Province. The quantitative evaluation index of effects of soybean waterlogging at different growth stages in Heilongjiang Province is constructed, which is helpful to realize the quantitative evaluation of soybean waterlogging in Heilongjiang Province.

     

/

返回文章
返回