叶面积指数
穗
产量(工程)
数学
线性回归
回归分析
天蓬
栽培
粮食产量
生长季节
农学
主成分分析
统计
植物
生物
材料科学
冶金
作者
Naoyuki Hashimoto,Yuki Saito,Shuhei Yamamoto,Taro Ishibashi,Ruito Ito,Masayasu Maki,Koki Homma
出处
期刊:AgriEngineering
[Multidisciplinary Digital Publishing Institute]
日期:2023-10-09
卷期号:5 (4): 1754-1765
被引量:4
标识
DOI:10.3390/agriengineering5040108
摘要
Estimation of rice yield components is required to optimize cultivation management in fields. The leaf area index (LAI) can be a parameter for this estimation, but it has not been evaluated in farmers’ fields. In this study, we analyzed the relationship between the LAI and yield components using data collected over a five-year period in farmers’ fields for the cultivar Hitomebore. Leaf area dynamics (LAD) were parameterized by fitting a growth function to the time-series data of LAI measured using a canopy analyzer. The contribution of LAD to yield components was analyzed using multiple regression. The LAIs at five points during the growing season (effective integrated temperatures of 200, 400, 600, 800, and 1000 °Cd) were calculated using the growth function and the relationship between them and the yield components were analyzed using linear regression. The results of the multiple regression analysis showed that all function parameters significantly affected the yield components at the 5% probability level, with the greatest contribution from the LAI. The LAI at effective integrated temperatures of 400 to 600 °Cd significantly affected most of the yield components. However, the correlation coefficients between the LAI and yield components were not high (R = 0.18–0.61). The LAIs at almost all periods significantly affected the grain number per panicle and 1000-grain weight at the 5% probability level. These results suggest that the LAI could be used for monitoring trends in yield components, while further research on the development of accurate estimation methods is needed.
科研通智能强力驱动
Strongly Powered by AbleSci AI