江西农业学报Issue(6)：11-14,4.
玉米新品种洛玉818群体生理指标研究
Study on Physiological Indexes of Colony of New Maize Variety Luoyu 818
摘要
Abstract
The physiological indexes of colony of new maize variety Luoyu 818 were studied .The results showed that: under the suitable planting density 67500 plant/hm2 , the yield structure of Luoyu 818 was as follows:the number of spike 67068 spike/hm2 , number of row per spike 15.6, number of grain per row 35.8, and 1000-grain weight 326.5 g;the colony productivity was exerted sufficiently, and its yield reached 11454.2 kg/hm2 .Under the condition of suitable planting density , all physiological inde-xes of Luoyu 818 colony developed harmoniously , the leaf area index ( LAI) reached the maximum value (5.72) at silking stage, and it kept at a high level for a long time and was still 3.19 at maturing stage; the gross of leaf area duration ( LAD) reached 3569100 ( m2・ d)/hm2 , and LAD distributed rationally in various growth periods;the net assimilation rate ( NAR) was well coor-dinated with LAD;the total dry matter accumulation amount was 25113.7 kg/hm2 , and the dry matter accumulation amount after silking stage accounted for 60.9%of the total amount;the colony growth rate (CGR) reached 256.7 kg/(hm2・ d); the grain-filling rate always stayed at a reasonable level .关键词
玉米/洛玉818/生理指标Key words
Maize/Luoyu 818/Physiological index分类
农业科技引用本文复制引用
金松灿,李林,万会利,蔡珊利,卫勇强,赵合林..玉米新品种洛玉818群体生理指标研究[J].江西农业学报,2014,(6):11-14,4.基金项目
河南省玉米育种重大攻关项目（1220010200）。 （）
