PurposeTo analyze the agronomic traits and nutritional value of different silage maize varieties, so as to provide some theoretical reference for screening the high quality silage maize varieties to be popularized in Baoshan City, Yunnan Province.
MethodsEight morphological indexes, such as plant height, fresh weight and dry weight, were measured in 10 silage maize varieties at milk ripe stage. Nine nutritional values, such as crude protein, ether extract and crude ash content, were determined after the whole silage corn chopped up for 60 days, and membership function was used for comprehensive evaluation.
ResultsEar length, ear circumference, stem weight, fresh weight and dry weight of Yunduan No.10 were significantly higher than those of other corn silage varieties (P<0.05), while water content of Dika667 was significantly lower than that of other maize silage varieties (P<0.05), and the crude ash, ether extract and crude protein contents of Dika667 were higher or significantly higher than those of other maize silage varieties (P>0.05 or P<0.05). Through membership function analysis, the suitable planting order was Yunduan No.10>Xikang18>Yunqing No.2>Heyu9566>Dika667>Jinke932>Yunqing No.5>Datian No.1>Zhongyu335>Aoyu5102.
ConclusionThe comprehensive evaluation shows that Yunduan No.10, Xikang18 and Yunqing No.2 are suitable for planting in Baoshan area of Yunnan Province.
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