【摘要】 草坪型多年生黑麦草开花持续期为 33d ,一般情况下穗轴中部的小穗先开花 ,以后逐渐向顶部和基部发展 ;一个花序上的小花开花大部分集中在前 6d ,大约占 89 3% ;多年生黑麦草花后 2 6～ 2 7d ,小穗干重最大 ,其含水量为 41 1 5 % ,种子不易落粒 ,为种子适宜收获期。在种子生产方面 ,构成因子 (株穗数 ,小穗数 )与影响因子 (株高 ,叶重 )共同对草坪型多年生黑麦草的种子产量起作用更多还原

【Abstract】 The duration of flower of Lolium Perenne L.was 33days.The greater part of flowers with percent 89.3 on a inflorescence bloomed together in the former 6 days.The optimum time for seed harvesting of Lolium Perenne L.was the time after 26-27days following anthesis,when DM(the dry matter)of per spikelet amounted to the highest with 41.15% of water content.The contribution of the number of ears per plant to seed yields was the highest,the number of spikelets was the second,plant height and blade weight were important factors affecting on seed yields of Lolium Perenne L..更多还原