摘要
在适宜播期范围内,大麦出苗后20d左右,芽鞘节就开始分蘖。半冬性品种(包括弱春性品种).其分蘖期约66~75d,占全生育期的37%~42%,其中有效分蘖期占13%~19%。各级分蘖的成穗数占总成穗数的比值,主穗占26%~27%,一级蘖穗占39%~60%,其中Ⅰ和Ⅱ蘖成穗占33%~58%。为了实现丰产目标,应须选育分蘖力中等,成穗率高的品种。栽培上要求施足底肥,促壮苗早发,控制二、三级分蘖滋生,办调好个体与群体问的发育关系。
Within prper sowing date,the coleoptile nede began to tiiler following 20 d petorior to barleyseedling emergence. The tillering time of semi-winter varieties(included weak spring varieties)Iastad about 66~75d. Tillering time and offective tillering time amounted for 37%~42%and 13%~19% of life span respective-ly ,Among rates of the fertile ear number of various levels of tillers versus the total fertile ear number, the mainears amounted for 26%~27%,the primary tillering ears amounted for 39%~60%,of whicb both lst and 2ndtillering ears amounted for 33%~58%. The variety, whose tillering ability was intermediate and fertile ear ratewas high, shoule be choosed to realize the high-yielding obju=ective. In cultivation, it was necessary to apply basefertilizers sufficiently, stimulate vigorous seedling to germinate early, inhibit the secondary and tertiary ears to mul-tiply,coordinate the favorable development relation between the individual plant and population.
出处
《湖北农学院学报》
1994年第4期8-13,共6页
Journal of Hubei Agricultural College
基金
湖北省教委科研基金