CAJ | 학술논문

2009年4～11月在河北省大名县采用大田试验播种杂交狼尾草（Pennisetum americanum×P.purpureum）种茎,研究不同种植密度（6 944,13 889,27 778株/hm2）不同刈割茬数后其饲用价值的变化,为杂交狼尾草在生产实践中发挥较大的饲用价值提供理论依据。结果表明：粗蛋白含量随密度的增加而下降,中性洗涤纤维以密度居中者最大,酸性洗涤纤维随着密度的增大而增大,粗灰分含量随密度增加减小。随着刈割茬数的增多,粗蛋白和粗灰分含量均降低,NDF和ADF含量增高。综合种植密度和刈割次数,要得到高品质的杂交狼尾草,适宜种植密度为6 944株/hm2,且为第1茬刈割的鲜草。
2009년4～11월재하북성대명현채용대전시험파충잡교랑미초（Pennisetum americanum×P.purpureum）충경,연구불동충식밀도（6 944,13 889,27 778주/hm2）불동예할치수후기사용개치적변화,위잡교랑미초재생산실천중발휘교대적사용개치제공이론의거。결과표명：조단백함량수밀도적증가이하강,중성세조섬유이밀도거중자최대,산성세조섬유수착밀도적증대이증대,조회분함량수밀도증가감소。수착예할치수적증다,조단백화조회분함량균강저,NDF화ADF함량증고。종합충식밀도화예할차수,요득도고품질적잡교랑미초,괄의충식밀도위6 944주/hm2,차위제1치예할적선초。
To ensure the optimal density and the cutting frequency for Pennisetum americanum×P.purpureum quality under certain ecological conditions,we designed three plant densities under field condtion,in Handan of Hebei province from April to November in 2009,to test quality of Pennisetum americanum×P.purpureum.The results showed that crude protein（%）and Ash（%）decreased while DNF and ADF（%） increased with the increasing of plant density.Crude protein（%）and ash（%）decreased while NDF and ADF increased with cutting frequency increasing.The best nutrition quality was obtianed at 6 944 plant/hm2 in the first cutting.