论文部分内容阅读
2009年以恢复系R463和不育系金23A为材料,研究杂交水稻制种种植行数配置,2010年以杂交稻中优161(中9A/中恢161)为材料研究不同密度机插对产量的影响,结果表明:在机插规格30.0 cm×13.3 cm条件下,随母本行数增加母本结实率下降,产量下降,机插时适宜行数为6行;不育系中9A机插秧的秧苗素质明显低于手插秧,且推迟开花期1 d;在机插行距固定不变的情况下,随着株距减小,种植密度增大,制种产量增加。以30 cm×12 cm机插规格的产量最高(3.94 t/hm2),高于手插对照(20 cm×20 cm)的3.91 t/hm2。表明通过增加机插密度可以获得较高制种产量。
In 2009, the restorer lines R463 and CMS line 23A were used to study the line configuration of hybrid rice seed production. In 2010, hybrid rice Zhongyou 161 (Zhong 9A / Zhonghui 161) The results showed that under the condition of 30.0 cm × 13.3 cm, the seed set rate of female parent decreased with the increase of female parent line number, and the yield decreased. The seedling quality was significantly lower than that of the planted seedlings, and the flowering period was postponed for 1 d. With the fixed spacing of the machine inserted, the planting density increased and the seed yield increased with the decrease of the plant spacing. The highest yield (3.94 t / hm2) was obtained with the machine size of 30 cm × 12 cm, which was higher than that of the control (20 cm × 20 cm) with 3.91 t / hm2. It shows that higher seed production can be obtained by increasing the density of machine.