【摘要】 以杂交中籼稻汕优63和中粳稻武运粳8号为材料,采用不同的栽插密度、肥料运筹等措施,塑造不同产量的群体,研究水稻拔节期株型特征及其与产量的关系。结果表明:高产群体拔节期叶片的长度适宜,叶鞘载叶量小。汕优63叶角较小,叶片松散度宜小,顶部3叶松散度之和7.7度左右;武运粳8号叶片松散度宜大,顶部3叶松散度之和6.0度左右。群体距顶层35cm左右的透光率达40%～45%,顶部3叶的叶绿素含量适中,光合速率高。更多还原

【Abstract】 The relationship between characters of plant type in elongation stage and yield was studied in population of midseason rice Indica (Shanyou 63) and Japonica (Wuyungeng 8) with different yield. The results indicated that leaf length was moderate and leaf area per sheath weight was smaller in high yielding population. The leaf angle and loose degree were smaller in Shanyou 63, the loose degree was larger in Wuyungeng 8. The transparence of 35 cm layer from top in population was 40%～50% and the chlorophyll content of top 3 leaves was moderate. The photosynthetic rate of top 3 leaves was higher.更多还原