水稻中位蘖成穗与高产利用研究  

Studies on Medium-position Earing and Stable High-yielding of Rice

作　　者：周汉良 

机构地区：[1]河北省稻作研究所

出　　处：《河北农业大学学报》1994年第4期48-53,共6页Journal of Hebei Agricultural University

摘　　要：就同期播种和同期移栽条件下，插秧至分蘖初期两种不同水层秧苗的分蘖与成德规律进行了分析。结果表明，插秧至分蘖初期采取适当的水层处理，能有效地抑制水稻主茎下部分蘖的发生，并淹死秧田所带分蘖，使开始发生分蘖的叶位上移，防止因下部蘖位发生分蘖对中部优势蘖位的不良影响。集中利用主茎中上部有效蘖位发生分蘖与成穗。在单位面积上收获穗数相近的条件下，使平均每穗粒数显著增加，从而使产量大幅度提高。前控结合后控，集中利用主茎中部的分蘖，发挥蘖位优势具有更大的增产潜力。The ragularity of tillering and earing of rice shoots at two different water levels from transplanting stage to early tillering stage under the same condition of seeding andtransplanting were studied and analysed. The results showed that proper treatment of water levels from transplanting stage to early tillering stage was helpful to chech tillering at lower stems of rice effectively and stop the develpment of tillers under water as well. In the meantime,the leaf position was forced to move up only to prevent the harmful influence of the lower tillers on the medium dominant tillering position. In this case,the averge number of seeds per ear increased obviously at per unit area under the same condition through centralized utilization of tillering at medium position of stems so that the rice yield per unit area increased greatly. In short,giving full play to domiant tillering position with combination of fore-control with post-control had greater high-yielding potencial.

关 键 词：水稻 分蘖规律 中部蘖位 每穗粒数 

分 类 号：S511.1[农业科学—作物学]