狼尾草属牧草品种比较试验

Comparative Test on Forage Grass Cultivars of Pennisetum

【目的】综合掌握适于本地种植的牧草种质资源品种,优化牧草品种推广策略。【方法】通过对7个狼尾草属牧草品种进行田间种植试验,比较其产草量和营养成分。【结果】热研4号王草的产草量最高,每小区达到329.67kg,与其他品种差异显著,矮象草株高及产量均为最低;紫茎象草和优质象草粗蛋白质含量较高,分别为8.01%和7.83%,其他品种介于6%~7%之间;桂牧1号杂交象草粗纤维含量最高为33.68%,其他品种介于29%~32%之间。【结论】结合产草量及营养成分分析结果,建议主要狼尾草属牧草品种在本地推广利用顺序依次为热研4号王草、桂闽引象草、优质象草、桂牧1号杂交象草、华南象草、紫茎象草、矮象草。在实际生产中,可结合不同需求,因地制宜种植相应品种。

【Objective】The study tried to have a comprehensive understanding of the forage germplasm resources suitable for local cultivation and to optimize the promotion strategy of forage species.【Method】Through field-planting trial,the yield and nutritional components of 7 main forage grass cultivars were compared.【Result】The P.purpureum×P.typhoideum cv Reyan No.4 had highest grass yield,with a yield of up to 329.67 kg each plot,which was significantly different compared with other cultivars.And the P.purpureum had lowest plant height and yield.The contents of crude protein was higher in P.purpureum Schumach and P.purpureum Schumab cv.Purple compared with that of others(6%-7%),with the contents of 8.01%and 7.83%,respectively.The content of crude fiber of P.purpureum cv.Guimu No.1 was 33.68%,and those of others were 29%-32%.【Conclusion】Combined with the analysis res1ults of the production and nutritional components,it is suggested that the local promotion and utilization order for the main forage grass cultivars of Pennisetum is:P.purpureum×P.typhoideum cv.Reyan No.4,P.purpureum Schum.cv.Guiminyin,P.purpureum Schumach,(P.americanum×P.purpureum)×P.purpureum cv.Guimu No.1,P.purpureum cv.Huanan,P.purpureum Schumab cv.Purple,P.purpureum.In practical production,different varieties can be planted according to different needs.