不同播期对糜子不同品种生长发育及产量的影响

为探讨不同播期对糜子不同品种生长发育及产量的影响,以6个糜子品种为试验材料,在山西晋中榆次设5个播期试验,研究了播期对糜子品种发育及产量的影响。结果表明：晋中当地播期B5（7月15日）糜子不能安全成熟。其余4个播期糜子均能正常成熟,且随着播期的推迟,各品种生育期都缩短,各品种株高、主茎节数、有效分蘖等形态特性及单穗长、单穗粒重、千粒重等经济性状整体上随着播期的推迟呈减小趋势。从产量来看,晋黍9号、汾黍6号适宜早播,在5月底播种,汾黍6号产量最高可达5 913.63kg/hm ²;伊糜5号、固糜21号、榆糜2号及保黍1号则宜晚播,6月初播种,榆糜2号产量最高可达6 306.96kg/hm ²。

Effects of Different Sowing Dates on Growth and Yield of Different Millet Varieties

In order to study the effects of different sowing dates on the growth and yield of different millet varieties, five sowing date experiments were conducted in Yuci, Jinzhong, Shanxi Province. The results showed that the sowing date B5 (July 15) could not be safely mature in combination with the local microclimate in Jinzhong. The remaining four sowing date treatments could mature normally, with the delay of the sowing date, the growth period of each variety was shortened. The characteristics such as plant height, main stem node number, effective tillering, single spike length, single spike grain weight, and thousand grain weight decreased with the delay of sowing date. From the perspective of output, Jinshu 9 and Fenshu 6 were suitable for early sowing, sowing at the end of May, the output of Fenshu 6 could reach a maximum of 5 913.6kg/hm ²; Yimi 5, Gumi 21, Yumi 2 and Baoshu 1 should be sowing later, sowing at the beginning of June, the output of Yumi 2 could reach a maximum of 6 306.96kg/hm ².