辽宁省玉米新品种区域试验适宜密度的研究  

Appropriate Plant Density of Regional Test of Maize in Liaoning Province

作　　者：张宇[1] 景希强[2] 王延波[3] 李磊鑫 张红 杨海龙[2] 张宝石[1] 

机构地区：[1]沈阳农业大学农学院,辽宁沈阳110161 [2]丹东农业科学院,辽宁凤城118109 [3]辽宁省农业科学院玉米研究所,辽宁沈阳110161 [4]辽宁省种子管理局,辽宁沈阳110034

出　　处：《作物杂志》2010年第4期98-101,共4页Crops

基　　金：辽宁省种子管理局资助

摘　　要：通过选用3种不同株型(耐密性)玉米的代表品种连玉16、丹玉39和郑单958,在辽宁省5个不同生态区的6种密度下进行了连续2年的试验。结果表明,3种不同株型品种在辽宁省同一熟期组不同生态地区的共同适宜密度分别是:平展型品种连玉16为4.8万株/hm2;半紧凑型品种丹玉39为5.7万株/hm2;紧凑型品种郑单958为6.75万株/hm2。在不同生态地区和不同年份共同的适宜密度为5.7万株/hm2和6.75万株/hm2,其中5.7万株/hm2密度的高产和稳产性的综合表现最佳。Three maize hybrids,Lianyu16,Danyu39 and Zhengdan958,with different plant types were planted in six different density treatments in five different ecological districts in Liaoning Province in two consecutive years.Comprehensive analysis indicateed that appropriate density for three different plant types in different ecological districts was 4.8万 plants per hm^2 for the flat type hybrid ＂Lianyu16＂,5.7万 plants per hm^2 for the semi-compact type hybrid ＂Danyu39＂ and 6.75万 plants per hm^2 for the compact type hybrid ＂Zhangdan958＂.Appropriate densities for the three different plant types in different ecological districts and years in common were 57000 plants per hm^2 and 6.75万 plants per hm^2.Comprehensive performance of 57000 plants per hm^2 was the best in the six density treatment in terms of yield and stability.

关 键 词：玉米 杂交种 株型 密度 

分 类 号：S513[农业科学—作物学]