龙牧扁穗冰草的生态生物学特性和生产性能的研究

Studies on Eco-biology and Produce Performance of Agrepyren cristatum（Linn.）Gaertn. Longmu

对选育的龙牧扁穗冰草（Agropyron cristatum（Linn．）Gaertn．Longmu）连续3年进行植物学特征、生态生物学特性、生产性能等方面研究，结果表明：龙牧扁穗冰草须根发达，具有根茎，叶表皮被毛。不同生长年限的龙牧扁穗冰草物候期、分蘖能力、形成的枝条数量、草产量和种子产量存在差异。3年平均干草产量为4022．41kg／km^2，种子产量为512．39kg／km^2.

The studies on botanical, eco-biological, cytological characteristics and produce performance of Agropyron cristatum （Linn.） Gaertn. Longmu were carried out during the three years. The results showed as follows： It has fibrous root-system, plants have rhizomes and leaf surface was covered with hair. It has great difference in phenological period, tillering ability and grass and seed yield of Agropyron cristatum （Linn.） Gaertn. Longmu at different years. The dry grass yields are 4 022.41 kg/ha and seed yields are 512.39 kg/ha on three years average.