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为了提高杂交水稻种子的利用率,研究种衣剂对杂交水稻裂颖种子的影响,采用6种市售种衣剂20.5%吡·咪FS、30.5%吡·咪FS、23.0%噻·恶·咪FS、锐胜WS、适乐时FS和亮盾FS包衣含裂颖实粒的杂交水稻组合隆两优华占和T优272种子,测定种子的发芽率和成秧率。结果表明,裂颖实粒占混合种子的10%时,20.5%吡·咪能提高隆两优华占混合种子的发芽率,显著高于对照处理4.33%,而成秧率没有下降;30.5%吡·咪没有提高T优272混合种子的发芽率,但成秧率有所提高,显著高于对照处理7.66%。裂颖实粒占混合种子的20%时,20.5%吡·咪和30.5%吡·咪均提高了T优272混合种子的发芽率,显著高于对照处理3.50%和4.83%,成秧率并没有下降。试验结果说明,种衣剂可能对裂颖种子有修复作用,20.5%吡·咪和30.5%吡·咪包衣含少量裂颖实粒的隆两优华占和T优272种子后,可提高种子效价。
In order to improve the utilization rate of hybrid rice seeds and study the effect of seed coating agent on hybrid rice Crambie seeds, six kinds of commercial seed coating agents 20.5% Pyrimethamine FS, 30.5% Pyrimethamine FS, 23.0% Micronesia FS, Ruisheng WS, Silencing FS and Liangdun FS were used to seed the seed germination rate and seedling rate. The results showed that 20.5% imidacloprid could increase the germination percentage of hybrid seed of Long Liangyou Hua, which was significantly higher than that of the control (4.33%), while the seedling emergence rate did not decrease (30.5% Pyrimethamine did not improve the germination rate of Tanyou 272 mixed seed, but the seedling planting rate increased slightly, significantly higher than the control treatment of 7.66%. 20% Pyrethrolene and 30.5% Pyrethrolene increased the germination rate of mixed seeds of T You 272, which was significantly higher than that of the control (3.50% and 4.83%, respectively) No decline. The results showed that the seed coating could repair the cracked seeds, and 20.5% Pyrimethamine and 30.5% Seed potency.