云南地区扁穗雀麦繁殖对策研究  

Study on Reproduction Methods of Wild Flat Bromegrass In Yunnan Province

作　　者：区力松 王晓云[2] 曹清国 杨春梅 毕玉芬[5] 

机构地区：[1]云南省罗平县板桥镇农技站,云南罗平655800 [2]南京农业大学,江苏南京210095 [3]内蒙古呼伦贝尔牙克石市乌尔其汉镇畜牧综合站,内蒙古牙克石022159 [4]云南省寻甸县功山镇中学,云南寻甸655208 [5]云南农业大学,云南昆明650201

出　　处：《贵州农业科学》2008年第2期135-137,共3页Guizhou Agricultural Sciences

摘　　要：对云南野生种牧草扁穗雀麦的繁殖对策进行了初步研究,结果表明:有性繁殖和营养繁殖效果都很好,种子产量可以达到270.00 g/m2,且种子发芽率在无任何处理的情况下也能达到80%以上,总繁殖效力平均为34.24%。扁穗雀麦有性繁殖苗期生长缓慢,生长速率为0.361 cm/d,但分蘖以后生长速率加大,抽穗开花期达最大;扁穗雀麦营养繁殖成活率较高,为89.7%,生长速度比有性繁殖快,并且随植株长大,生长速率呈下降趋势;种子产量随地上生物量的增加而增加。The results from studying two reproduction methods of wild flat bromegrass show that the seed yield,germination rate（without any treatment） and average total reproduction efficiency of asexual and sexual reproduction method is 270.00 g/m2,〉80% and 34.24% respectively.The growth speed of flat bromegrass by sexual reproduction is slow（0.361 cm/d） at seedling stage,but the growth speed raises after tillage and the growth speed is up to maximum at flower stage.The survival rate of flat bromegrass by asexual reproduction is up to 89.7% and the growth speed of flat bromegrass by asexual reproduction is quicker than that by sexual reproduction.The growth speed of flat bromegrass by asexual reproduction drops with plant growth and its seed yield increases with biomass increase of the aerial part.

关 键 词：扁穗雀麦 繁殖效力 繁殖对策 

分 类 号：S543.803.8[农业科学—作物学]