3种禾本科牧草饲用品质的季节动态分析

摘要

The agronomic characters, seasonal dynamic of nutrients and feeding quality in three Germanous forage grasses, viz. , Pennisetum purpureum Schum(PPS), Pennisetum purpureum K. ScbumacbXP. Typoideum(PPT), Saccharum officinarum Lann(SOL), were investigated by method of Analytic hierarchy process( AHP) , in order to select green forage with high yield and good quality for succulence shortage during winter and spring. The results showed that the agronomic characters of PPT and PPS were better than that of SOL. Seasonal dynamic of nutrients in PPT and SOL were uniform, and feeding quality in winter and spring was better than that in summer and autumn, while feeding quality of SOL in spring and summer was better than that in winter and autumn. The comprehensive character of PPS was the best, next was PPT, and SOL was the worst.%为缓解广西冬春季青饲料短缺的矛盾,对象草、凌云草、甘蔗草3种禾本科牧草的农艺性状、营养成分的季节动态进行比较研究,并用聚类分析法分析其农艺性状和参照层次分析法(AHP)综合评价其营养品质、饲用品质的季节动态及综合性状.结果表明,象草和凌云草的农艺性状优于甘蔗草；象草和凌云草饲用价值的季节动态变化一致,其饲用品质的季节排序是冬、春季优于夏、秋季,甘蔗草则是春、夏季优于冬、秋季；象草的综合性状最好,凌云草次之,甘蔗草最差.