摘要
项目研究结果表明：甜菜产量和含糖率与密度呈曲线相关，相关指数分别γi=0．93和1．=0．91。甜菜产量和含糖率均以7．0万株／hm^2密度最高，相应为54．2t／hm^2和19．83％。甜菜高产高糖群体的主要生理参数为：7月中旬叶面积指数应达3．5以上，最大值以5．2左右为宜，总光合势以3550km^2/hm^2·d为宜，生育期平均净光合生产率应达到8．1g／m^2·d左右，经济产量光能利用率应达到0．75％以上。
The results showed that ： sugar beet yield and sugar content showed a curvilinear correlation of density, the correlation coefficient were ri =0.93 and ri =0.91. Output of sugar beet and sugar rate were 54.2t/hm2 and 19.83% respectively under the highest density of 70,000/hm2. The main physiological parameters of groups of high yield and sugar in sugar beet ： leaf area index （LAI） in mid - July should be 3.5 or more, the maximum value should be 5.2, the total photosynthetic potential should be 3550km2/hm2 · d, the average net assimilation rate of growth should reach 8.1 g/m2· d about, Light energy utilization rate in the economic out put reached up 0.75% or more.
出处
《中国甜菜糖业》
2011年第2期1-4,共4页
China Beet & Sugar
关键词
甜菜
群体结构
叶面积指数
光合势
净光合生产率
光能利用率
sugar beet
population structure
LAI
photosynthetic potential
net photosynthetic productivity
light energy utilization rate
