Preliminary report on introduction and selecting experiment of silage maize in Yellow River Delta

In this study, different special silage maize varieties (lines) were introduced and tested, in order to screen varieties suitable for summer sowing in the Yellow River Delta Area. Grain and forage maize variety was used as the control. Growth periods, agronomic traits, resistance, fresh yield and hay yield were observed and measured. The results showed that fresh yield of silage maize varieties was higher than that of the control in addition to Yayu No. 26. The fresh yield of Gui No. 1 was higher (69 802.5 kg·hm-2). Gui No. 1 has excellent characteristics, such as strong stem tough, high lodging resistance, low stem to leaf ratio (1.833). It has excellent forage quality. It was considered that Gui No. 1 was suitable for summer sowing in the Yellow River Delta Area as the main cultivars of silage maize.