野生牧草莜麦和硬雀麦分蘖性与再生性初探  

A Preliminary Study on Tillering Ability and Reproducibility of Avena nuda and Bromus rigidus

作　　者：田宏[1] 鲍健寅[1] 蔡化[1] 刘洋[1] 王凤[1] 

机构地区：[1]湖北省农业科学院畜牧兽医研究所,武汉430209

出　　处：《湖北农业科学》2006年第2期229-231,共3页Hubei Agricultural Sciences

基　　金：农业部"物种资源保护"项目(070401)

摘　　要：对野生牧草莜麦和硬雀麦不同生长时期分蘖性和再生性的研究表明,分蘖总数在整个生育期呈递增趋势,初生长增加较慢,到翌年4月开花期时达最大值,每株为28.1个和106.8个,对照牧草多花黑麦草在3月中旬达最大值,每株为44.5个。莜麦和硬雀麦分蘖速度有两个高峰期,一为分蘖期,二为开春温度回升期,分蘖速度分别高达每天1.26和1.89株,多花黑麦草仅为1.18株。在一个生长季,莜麦可再生5次,而硬雀麦仅为4次;再生草量莜麦于第2次达1346.8g.m-2的最大值,硬雀麦在第1次达最大值,再生强度为43.11%。2种野生牧草的再生速度均随时间的推移而变化,但再生草总量都不及对照。The study on the tillering ability and reproducibility of Avena nuda and Bromus rigidus in different stages was carried out. The result showed that the total tillers value presented the increasing trend in the whole growing period. Incremental quantity changed slowly at first, but the value of Arena nuda and Bromus rigidus reached to the maximum 28.1 and 106.8 respectively in april in the coming year ,and the maximum tillers value of Lolium multiflorum was 44.5 in March. The tiller rate of Avena nuda and Bromus rigidus had two high peaks. One occurred at tiller period, the other at the stage of temperature rising in the coming year. The tiller rate of two wild forages reached to the 1.26 and 1.89 respectively and Lolium multiflorum was only 1.18. Avena nuda could regenerate 5 times and Bromus rigidus 4 times in the whole growing season. The weight of regenerated grass of Arena nuda came to the maximum 1346.8 g·m^-2 at the second cutting. But that of Bromus rigidus at the first cutting and the regeneration intensity was 43.11%. Both regeneration rates of the wild forages changed with the time, but the total biomass of Avena nuda and Bromus rigidus was under Lolium multiflorum.

关 键 词：野生牧草 分蘖 再生 

分 类 号：S543.7[农业科学—作物学] S543.8