作　　者： ; ; ; ; ;

机构地区： 中国热带农业科学院热带作物品种资源研究所农业部热带作物种质资源利用重点开放实验室

出　　处： 《热带农业科学》 2012年第1期42-45,共4页

摘　　要： 2004～2006年对6个坚尼草品系在海南西部半干旱地区品种比较试验,结果表明:坚尼草品系的花期比较长,历期1～2个月,个别品种花期2个月以上,对照4号坚尼草(Panicum.maximum Jacq.cv.Reyan No.9)开花最早,开花期在7月下旬,1号坚尼草(P.maximum Jacq.cv.TD58)开花最晚,开花期在9月下旬。参试坚尼草品系干草产量差异显著,2号坚尼草(P.maximum Jacq.cv.Mombassa)干草产量最高达17 224.58 kg/hm2.a,比对照品种4号坚尼草(11 857.05 kg/hm2.a)高45.27%,且差异显著;次高是6号坚尼草(P.maximum Jacq.cv.CIAT6299),干草产量为16 169.73kg/hm2.a,比对照品种高36.37%,5号坚尼草(P.maximum Jacq.cv.trichoglume)产量最低,干草产量仅为8 925.64 kg/hm2.a。参试坚尼草品系的粗蛋白含量介于10.30%～12.10%,以对照品种的粗蛋白含量最高,为12.06%,次高为2号坚尼草,为11.63%,3号坚尼草(P.maximum Jacq.cv.Reyan No.8)最低,为10.31%。 The results of P.maximum comparison trials from 2004-2006 a shows that the period of flowing of P.maximum are 1-2 months.P.maximum Jacq.cv.Reyan NO.9（CK） is flowering firstly in the last ten-day period of July and P.maximum Jacq.cv.Mombassa is flowering at last in last ten-day period of September.The Dry matter yield（DMY） of P.maximum has significant difference.The DMY of P.maximum Jacq.cv.Mombassa is the highest,arriving to kg/hm2·a,increased by 45.27% compared with CK（DMY： 11 857.05 kg/hm2·a）.The second highest DMY is the P.maximum Jacq.cv.CIAT6299,reaching 16 169.73 kg/hm2·a,increased by 36.37% compared with CK and the DMY of the P.maximum is the lowest,only arriving to 8 925.64 kg/hm2·a.The crude protein（CP） content of P.maximum is 10.30% to 12.10%.The CP content of P.maximum Jacq.cv.Reyan NO.9 is 12.06%,higher than other varieties and followed by P.maximum cv CIAT6299 which arrives to 11.63%.The CP content of P.maximum cv Reyan.NO.8 is the lowest,only reaching 10.31%.

关 键 词： 坚尼草 热带半干旱气候 干草产量 物候期

领　　域： [农业科学]