6个坚尼草品种在海南西南部半干旱地区品种比较试验

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%。

Six Panicum maximum Varieties Comparison Experiment in South-western Semi-arid Area of Hainan Province

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%.