优良野生牧草毛花雀稗生育特性研究

对野生毛花雀稗不同分株种植处理的成活率、分蘖力、开花结实和根系分布情况进行测定分析,得出以下结论:成活率以处理2(两个分蘖植株)最高,为100%;各处理总分蘖数相差不大;处理2和处理3(两个分蘖植株放置10d)开花结实情况较好,处理1(单个分蘖植株)最差;根系分布情况差异不显著。另对处理2进行了生长速度和再生速度测定,毛花雀稗的生长速度在7月815日之间出现峰值,为5.1cm/d,峰值前半段为保持较低生长水平缓慢增长,5月份后生长开始加快。峰值后半段为保持较高的生长水平缓慢下降趋势,进入11月后生长水平急剧下降。

Study on Bearing Characteristics of Excellent Wild Dallies Grass

The survive rate,tillering,blossomingand seeding,distributingofroot was measured and analyzed. The results showed: The survive rate of treatment 2( two tillers)can reach 100% that is the highest;The tillering number of different treatment was not discrepant;The blossomingand seedingoftreatment 2 and 3( twotillers placed for 10 days)was preferable,the treatment 1( one tiller)was the worst;The difference ofroot distributingwas not remarkable. The growth speed ofDallies grass can reach peak value of5.1cm/d duringthe eighth tofifteenth July. Dallies grass grows slowly before the peak value,it grows quickly in May. It keeps high growing level after peak value,growing level decreases quickly in November.