毕节地区杂交玉米组合群体结构及群体质量指标  

Population Construction and Quality Index of Hybrid Maize Combinations in Bijie Prefecture

作　　者：肖莉 郑元红 胡建风 龙静 罗冬 王慧 

机构地区：[1]贵州省毕节地区经作站,贵州毕节551700 [2]贵州省毕节地区种子站,贵州毕节551700 [3]贵州省毕节地区农业技术推广站

出　　处：《贵州农业科学》2009年第1期70-73,共4页Guizhou Agricultural Sciences

基　　金：贵州省重大攻关后补项目"贵州省中低产旱地粮食平衡丰产增效科技工程"[黔科合NZ字(2005)3011]

摘　　要：采用二裂式裂区设计，对紧凑型、半紧凑型、平展型3种株型玉米品种的密度及产量结构、叶面积系数、干物质重、光舍势、净同化率等主要群体质量指标进行了研究。结果表明，紧凑型玉米临奥4号最佳产量水平密度为4000～4800株／667m^2，其主要质量指标：最大叶面积系数3．39～4．14，干物质积累量1523．60～1632．00kg／667m^2，总光合势16．11万～19．98万m^2·d／667m^2，平均净同化率为7．39～8．34g／（m^2·d）。半紧凑型玉米毕玉2406最佳产量水平密度为3200～4000株／667m^2，其主要质量指标：最大叶面积系数2．67～3．15，干物质积累量1159．36～1334．80kg／667m^2，总光合势16．35万～18．79万m^2·d／667m^2，平均净同化率为6．68～6．82g／（m^2·d）。平展型玉米毕单13号最佳产量水平密度为3200～4000株／667m^2，其主要质量指标：最大叶面积系数3．81～4．23，干物质积累量1209．60～1390．00株／667m^2，总光合势22．68万～24．96万m^2·d／667m^2，平均净同化率为5．16～5．22g／（m^2·d）。The population construction and main population quality indexes including leaf area coefficient, dry matter weight, photosynthetic vigor, net assimilatory efficiency of 3 hybrid maize varieties with compact, semi-compact and flat plant types were studied by using the split plot design. The results showed that the optimum density, maximum leaf area coefficient, dry matter weigh, total photosynthetic vigor and net assimilatory efficiency of Lin＇ ao 4 with a compact plant type, Biyu 2406 with a semi-compact plant type and Bidan 13 with a flat plant type were 4000 to 4800 plants/ 667m^2, 3.39 to 4. 14, 1523.60 to 1632.00kg/667m^2, 0. 1611,0. 1635 million to 0. 1998 million m^2 · d/667m^2 and 7.39 to 8.34g/（m^2 · d）, 3200 to 4000 plants/667m^2, 2.67 to 3.15, 1159.36 to 1334.80kg/667m^2, to 0. 1879 million m^2·d/667m^2 and 6.68 to 6.82g/（m^2 · d ）, and 3 200 to 4 000 plants/667m^2 , 3.81 to 4.23, 1209.60 to 1 390.00 plants/667m^2 , 0. 2268million to 0. 2496 million m^2· d/ 667m^2 and 5.16 to 5.22g/（m^2·d） respectively.

关 键 词：玉米 株型 群体结构 质量指标 

分 类 号：S513[农业科学—作物学]