摘要
试验结果表明：薏米新品种“龙薏1号”在5叶前和19-22片叶期叶面积小而出叶速度快，在10-12片叶期叶面积最大而出叶速度最慢；有2次快速分蘖期，第1次出现在8叶前，第2次出现在拔节后；12片叶时拔节，分蘖最慢，22片叶时分蘖达最高峰，之后分蘖逐步消减；在16片叶时由营养生长转入生殖生长，幼穗分化时间较长，有6个叶片生长与生殖生长同步进行；种植密度行株距90 cm×70 cm，施肥水平纯氮25 kg、纯磷25 kg、纯钾25 kg为最优组合，种植密度对产量影响最大，当施肥量达到一定水平后，再增加施肥量则薏米产量反而降低。
The testing results showed that before 5 leaves and in 19-22 leaves period,the leaf area was small but leaf emergence rate was high;the leaf area was the biggest while leaf emergence rate was the lowest in 10-12 leaves period.Fast tillering happened two times,which first happened before 8 leaves,the second after jointing,the tillering was the lowest and jointing started in 12 leaves period,the highest leaf tillering was observed in 22 leaves period,and then the tillering decreased gradually.The vegetative growth changed to reproduction growth with 16 leaves,the differentiation period of young ear was long,and six leaves＇ growth and reproduction growth carried on with synchronization.Row spacing of planting density 90 cm×70 cm with pure N（25 kg）,pure P（25 kg）,pure K（25 kg）,was the most superior combination,the planting density did most influence on the yield.After fertilizer application achieved a ration,the yield decreased when the fertilizer increased.
出处
《江西农业学报》
CAS
2008年第8期4-6,共3页
Acta Agriculturae Jiangxi
基金
福建省龙岩市科技局重大科技项目(2007LY06)
关键词
薏米
生长发育
种植密度
施肥水平
高产因素
Pearl barley
Growth
Planting density
Fertilizer application level
High-yielding factor
