Screening Experiment of New Silage Corn Varieties in Yulin
To promote the efficient development of the silage corn industry in Yulin,a field identification and screening experiment was conducted on 13 silage corn varieties.This experiment involved measuring and re-cording the growth periods,agronomic traits,and yield correlations of each variety.The results indicated that the growth periods were moderate,and the plant types were either compact or semi-compact.Most tested varieties demonstrated better green retention compared to the control.Among these,Modern 042 exhibited the best overall performance.Both Xiandai 042 and Jingke 689 achieved higher fresh grass and hay yields than the control.Spe-cifically,the fresh grass yields were 65 416.3 kg/hm2 and 65 408.7 kg/hm2,which were 7.24%and 7.23%higher than the control,respectively.The hay yields were 29 489.7 kg/hm2 and 26 603.5 kg/hm2,representing increases of 11.14%and 0.27%over the control.Additionally,the dry weight of individual grains was greater.These two silage corn varieties are preliminarily recommended for extension and cultivation in Yulin.
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