扁穗牛鞭草在川东北地区的适应性研究

在川东北地区栽植 9个扁穗牛鞭草材料,其中以"重高"牛鞭草为对照,对材料进行物候期、生长速度、产量等调查,结果显示:从物候期观察来看,H2003-5生育期最长,比对照延长40 d,其次是H019,比对照延长23 d;生长速率最快是H019(3.70 cm/d),比对照高21.3 %,差异显著(P<0.05),其次是H2003-5(3.55 cm/d),比对照高16.4 %;从干草产量来看:最高是H2003-5(38 118.60kg/hm2),比对照高36.41 %, 差异极显著(P<0.01),其次是H2003-4(36 016.35 kg/hm2),比对照高28.89 %,差异显著(P<0.05).结果表明:9个材料均能很好地适应川东北丘陵地区种植,其中新品系H2003-5、H2003-4、H019表现出较强的生长能力,具有很大的推广价值.

Study on Adaptability of Hemarthria compressa Grass of Northeast of Sichuan

With Hemarthria compressa cv. Chonggao as control, 9 H. compressa were planted to study the phenophase ,growth speed, yields of fresh grass and hay grass in Northeast of Sichuan.The results showed that the phenophase of H2003-5 was the longest and was prolonged by 40 d compared with control;the second was H019 and the phenophase was prolonged by 23 d compared with control.The growth speed of H019 was the fast(3.70 cm/d) and was enhanced by 21.3 % compared with control;the second was H2003-5(3.55 cm/d) and was enhanced by 16.4 % compared with control. The yield of the hay grass of H2003-5 was the highest and higher 36.41 % than that of the control.The conclusion was maken that 9 H. compressa could also meet the climate in Northeast of Sichuan and H2003-5,H2003-4 and H019 with the strong growth ability had the good popularization value.