期刊论文

中文

农业工程学报

1002-6819

2024

40

10

213-221

10.11975/j.issn.1002-6819.202309173

2022NK2047:湖南省重点研发计划项目 CARS-01-26:现代农业产业技术体系岗位专家项目 SYL2019001:湖南农业大学双一流建设项目 2022NK4167:创新平台与人才计划

本校为第一机构

为定量分析水稻群体茎蘖数量动态变化过程及分蘖动态特征,该研究使用双Logistic模型分别描述分蘖发生与死亡过程,建立水稻群体分蘖动态模型;根据水稻分蘖过程的时序特征定义描述分蘖过程的特征指标,并推导出分蘖特征指标的计算式;基于不同基因型品种、种植方式、种植时期、种植密度下水稻分蘖动态数据集检验模型优度和适应性;并应用分蘖动态模型和指标探索分蘖动态对种植密度的响应规律。结果表明,所建模型对不同基因型水稻品种在不同种植方式、种植时期和种植密度下的分蘖动态数据拟合优度较好,标准均方根误差SRMSE服从均值小于5%的Gamma分布,并且99%的SRMSE小于10%。基于所建模型计算的分蘖特...

Here a dynamic model was developed on the tiller number of the rice population.The double Logistic model was also used to quantitatively analyze the dynamic process of the tiller occurrence and the extinction.A set of indicators was defined to describe the tillering dynamics,including the total number of growing tillers(Ng),the total number of dead tillers(Nd),the number of retained tillers(Nr),the start time of tillering(Tst),the peak time of tillering(Tpt),the end time of tillering(Tet),the start time of tillers death(Tsd),the peak time of ti...