Composition of LAI and Stems and Tillers and Their Relationship in Early Stage of High-yielding Rice Population
ZHANG Lin-qing~1,MA Ai-jing~2,ZHANG Ya-jie~3 (1. Department of Agronomy and Food,Huaiyin Institute of Technology, Huaian 223001; 2.Agricultural Bureau of Huaian City of Jiangsu Province, Huaian 223001; 3.Department of Agronomy,Agricultural Colloge, Yangzhou University,Yangzhou 225009)
The relationship between composition of stems and tillers and LAI was studied in high-yielding population (Shanyou 63 and Guangling Xiangjing).The results indicated that:(1)The ratio of LAI of tillers of 4 leaf-age and over 4 leaf-age at N-n and elongating stage was high in high-yielding population.(2)The ratio of number of total tiller of 3 leaf-age and 3 leaf-age at N-n and elongating stage was high in high-yielding population.(3)The number of total tillers of 4 leaf-age and over 4 leaf-age correlated significantly with the total LAI at elongating stage.