论文部分内容阅读
近年来,我省杂交水稻生产迅速发展,种植面积由1976年的600多亩扩大到1979年的1097.1万亩,占单季中稻面积的55.4％。在大面积生产条件下,与常规中稻相比增产显著。以1978年为例,全省种植杂交稻626万亩,平均单产853斤,常规中稻945.37万亩,平均单产617.5斤,每亩增产235.5斤。国际稻(IR24,IR661等)虽先于杂交稻引入我省,但由于引入时间短加之杂交稻的迅速推广,尚未能在生产上扩大利用,仅作为杂交制种的父本应用。对国际稻的生产性能和高产栽培规律也缺乏研究。但从一些连年大面积种植单位的经验看,同样表现出高产稳产我院自1973年种植国际稻IR24及IR661以来,历年平均产量达到1000～1200斤左右,与杂交稻相比不相上下。
In recent years, the hybrid rice production in our province has been developing rapidly. The area under cultivation expanded from 600 mu in 1976 to 10.97 million mu in 1979, accounting for 55.4% of the area of single-season medium rice. In large-scale production conditions, compared with conventional medium-yield significantly. In 1978, for example, the province planted 626 acres of hybrid rice with an average yield of 853 kg, 945.37 million mu of conventional rice, with an average yield of 617.5 kg, 235.5 kg per mu yield. Although the international rice (IR24, IR661, etc.) was introduced into the province ahead of the hybrid rice, due to the short introduction time and the rapid popularization of the hybrid rice, it has not yet been able to expand its use in production and only serves as a paternal application for hybrid seed production. There is also a lack of research on the production performance and high-yielding cultivation of international rice. However, from the experience of some large-scale planting units in recent years, it shows the same high and stable yield. Since the planting of IR24 and IR661 international rice in our hospital in 1973, the annual average output has reached about 1000-1200 kg, comparable with that of hybrid rice.