草坪型多年生黑麦草生殖特性及种子产量构成的研究  

Study on reproduction characters and constitute of seed yields of turf-type Lolium Perenne L.

作　　者：兰剑[1] 赵永军[1] 王文华 

机构地区：[1]宁夏农学院草业科学研究所,宁夏永宁750105 [2]宁夏中卫县绿化队,宁夏中卫751002

出　　处：《四川草原》2001年第4期17-21,共5页Journal of Sichuan Grassland

基　　金：宁夏回族自治区科委 95重点攻关课题

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 )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..

关 键 词：多年生黑麦草 生殖特性 种子产量构成 冷季型草坪草 

分 类 号：S688.4[农业科学—观赏园艺]