不同类型玉米耐密性分析及对主要性状的影响  

Density-tolerance Analysis for Different Types of Maize and Effects on Main Agronomic Traits

作　　者：张丽宏[1] 李新[2] 罗湘宁[2] 许志斌[3] 

机构地区：[1]宁夏大学农学院,银川750000 [2]宁夏农林科学院农作物研究所,银川750000 [3]宁夏农林科学院,银川750000

出　　处：《西北农业学报》2014年第3期36-39,共4页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：宁夏科技计划资助"玉米新品种选育与示范"(2010重大科技专项KGZ16-1019)

摘　　要：通过对不同穗型品种耐密性及密度对主要农艺性状影响的研究表明，密度对株高、倒伏的影响为大穗型品种〉中穗型品种〉小穗型品种；穗长、穗行数受密度影响最大的为大穗型品种，其次为中穗型品种；行粒数对密度的响应表现为中穗型品种〉小穗型品种〉大穗型品种；先玉335的适宜密度9．00万～9．75万hm^-2，正大12为7．50万～8．25万hm^-2，宁玉12为6．00万～6．75万hm^-2。We studied the effect of density-tolerance hybrids of different ear type maize and density on main agronomic traits. The results showed effects of density on plant height and lodging implied big- ear type 〉middle-ear type 〉density-ear type; for ear length and rows per ear, big-ear type was af- fected most by density, and middle-ear type followed; the response of kernels per row on density showed middle-ear type 〉density-ear type 〉big-ear type; suitable planting density range was 9.00 × 104 - 9.75 × 104 plants/hm2 for Xianyu 335 （density-ear type）, 7.50 × 104 -- 8.25 × 104 plants/hm2 for Zhengda 12（middle-ear type）, and 6.00× 104 --6.75× 104 plants/hm2 for Ningyu 12.

关 键 词：玉米 不同穗型 密度 产量 

分 类 号：S513[农业科学—作物学]