【摘要】 1983年秋～1985年秋用11个选系进行田间试验,研究了黑麦草在南京地区的生长发育特性。结果表明:秋播黑麦草具有冬前和春季两个生长旺季,而春季则为干物质积累的主要时期;在相同栽培条件下,多年生黑麦草春季分蘖时间长于多花黑麦草,平均每株分蘖数前者高于后者;早熟型黑麦草花后23～27天、中熟型黑麦草花后21～25天,平均每小穗干物质重最大,含水率40.74％,为种子收获适期。更多还原

【Abstract】 Field experiments on 11 ryegrasses were carried out from the autumn, 1983 to the autumn, 1985. The results showed that: (1) the ryegrasses growth has two peak periods, respectively in late-autumn and in spring, however, the season of accumulating the DM yield is mainly in spring under autumn sowing; (2) the tillers per plant of perennial ryegrasses were more than those of Italian ryegrasses after elongating, because the tillering time in spring of the former was longer than that of the latter under the same cultivation; (3) the optium seed harvesting time for early matured andmid-matured ryegrasses is the time when the DM weight per spikelet appears max. respectively on the 23rd～27th day and the 21st～25th day after anthesis, the mean water percentage of spikelet was 40.74%.更多还原