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笔者于2013-2014年在贵州省草业研究所试验基地对黔草4号鸭茅农艺性状及种子生产开展了不同播期试验,记载了不同时间播种对黔草4号鸭茅株高、穗长、生殖枝、饱满度、千粒重及种子产量的影响,以探索最适播种期。结果表明,播期为9月22日,株高为145.9 cm、穗长为22.4 cm、生殖枝为331个/m~2、饱满度为38.75%、千粒重为1.22 g、产量为32.53 g/667m~2。其中生殖枝个数和种子产量显著高于其他播期。因此,生产黔草4号鸭茅种子播期为9月下旬可在生产上推广应用。
In 2013-2014, we conducted different sowing dates on the agronomic characters and seed production of Qiancao No.4grass in the pilot plant of Guizhou Provincial Institute of Grassland Science, and recorded the effects of sowing at different times on the plant height, Length, reproductive branch, fullness, 1000-grain weight and seed yield in order to explore the optimal sowing date. The results showed that the sowing date was September 22, the plant height was 145.9 cm, the spike length was 22.4 cm, the number of reproductive branches was 331 / m 2, the fullness was 38.75%, the grain weight was 1.22 g and the yield was 32.53 g / 667 m ~ 2. The reproductive branch number and seed yield were significantly higher than other sowing dates. Therefore, the production of Guizhou grass 4 sow colchicus sowing date in late September can be applied in production.