论文部分内容阅读
杂交水稻有分蘖力特强的特点,这是杂种优势的主要表现之一。据我院连续五年试验,都得到一致的结果,在相同栽培条件下,杂交水稻比亲本品种和当地的当家品种(早造广选三号、晚造包选2号)分蘖率高,而且早生快发。以1975年早造的试验为例,在同样的肥水管理条件下,插后13、23天的分蘖数以及最高苗数,杂交水稻与对照品种广选三号比,插6×4寸单株植,每亩2.5万基本苗的,分别高28.4％、35.5％和
Hybrid rice has strong tillering characteristics, which is one of the main manifestations of heterosis. According to our five consecutive years of experiments, we got the same result. Under the same cultivation conditions, the tillering rate of hybrid rice is higher than that of the parental varieties and the local varieties (Zaozao Guangxuan No.3 and Latezao Baozuan No.2) Early fast hair. Take the experiment made in early 1975 as an example. Under the same condition of fertilizer and water management, the number of tillers and the highest seedling number at 13 and 23 days after inoculation, Plants, 25000 basic acres per acre, respectively 28.4%, 35.5% and high