论文部分内容阅读
81～82年,我们观察了中熟晚粳双丰一号和本所新品系“402”、“403”开花习性。6月25日播种,7月31日播秧,9月17日始花,10月1日终止。栽培管理同大田。抽穗前数天,各选5个单株,按时观测开花时的温湿度,结果如下: (一)每植株播种至始花日数:三个参试品种(系),在本所水田环境,播种至始花需86.5±1.88日。据变量分析,品种(系)间差异不显著。 (二)每日开花时刻:供试三个品种(系)都以12～14时开花最多,双丰一号、“402”和“403”开花总数分别为93.84％、84.16％和79.29％。用x~2(卡
From 81 to 82 years, we observed the mid-maturing late japonica shuangfeng I and our new line “402” and “403” flowering habits. Sowing on June 25, sowing seedlings on July 31, beginning on September 17 and ending on October 1. Cultivation and field management. A few days before heading, five individual plants were selected and the temperature and humidity during flowering were observed on time. The results were as follows: (1) The days from the date of sowing to the beginning of flowering: three tested varieties (lines) To the beginning of flowers need 86.5 ± 1.88 days. According to the analysis of variables, there is no significant difference between varieties (lines). (B) The daily flowering time: The three varieties (lines) were the most flowering 12 to 14, Shuangfeng 1, “402” and “403” the total number of flowering were 93.84%, 84.16% and 79.29%. With x ~ 2 (card