移植期の現場データを用いて水稲生産地の発育ステージ変異を推定する方法

日本作物学会紀事

小林 隆¹  鳥越 洋一²  神田 英司¹ 

[1] 東北農業研究センター;中央農業総合研究センター

关键词: AMeDAS;    アメダス;    Cooling degree days;    冷却量;    Developmental stage;    発育ステージ;    Glumaceous flowers;    穎花;    Paddy rice;    水稲;    Productive panicles;    有効穂;    Variation of developmental stages;    発育ステージの変異;   

DOI  :  10.1626/jcs.76.112

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The variation of developmental stages in rice-producing areas makes it difficult to estimate cool weather damage. We made a method to estimate the percentage of productive panicles and glumaceous flowers at a specific stage such as meiosis, in the areas around automated meteorological data acquisition system (AMeDAS) points. In this method, the variations of transplanting date and leaf age of seedlings in each area were used as the initial values. Usefulness of the method was verified by the 8 AMeDAS points and 3 cropping zones of Aomori Prefecture in 1999, 2001 and 2003. The mean error of the first, middle and last heading dates at the AMeDAS points was 2.4 days and that in the cropping zones was 2.8 days in 1999. In 2003, a year with cool-weather damage the mean error at the AMeDAS points and cropping zones was 7.8 days and 6.5 days, respectively. Especially, the mean error in the cropping zone and AMeDAS points on the Pacific Ocean side was larger than on the Japan Sea side. Because the water temperature was kept high by deep water management in the Pacific Ocean side, heading dates might be advanced. There was a correlation between cooling degree days and percentage sterility of productive panicles. In conclusion, we can estimate the variation of developmental stages in rice-producing areas by this method.

【 授权许可】

Unknown