摘要
为提高糯玉米经济效益,试验采用二因素随机区组设计,以京科糯2000和花甜加糯129两个品种为材料,设置3个种植密度37500,45000和52500株·hm^-2,研究种植密度对糯玉米生育期、植株性状、果穗性状和产量的影响。结果表明:随着种植密度的增加,京科糯2000和花甜加糯129生育期延长;株高和穗位都下降,双穗株率、分蘖率无明显规律;空秆率、倒伏率和倒折率均为零;穗长逐渐变短,穗粗和秃尖长没有明显变化,穗行数和行粒数在种植密度52500株·hm^-2时有最大值。在45000株·hm^-2密度下鲜百粒重和鲜果穗重有最大值,京科糯2000的鲜百粒重、鲜果穗重分别为50.4和316.7g,花甜加糯129的鲜百粒重、鲜果穗重分别为48.4和302.2g。京科糯2000和花甜加糯129在52500株·hm^-2密度下小区产量最高,分别为32.46和28.64kg。综合考虑,京科糯2000和花甜加糯129的最佳种植密度为52500株·hm^-2。
In order to improve economic efficiency of waxy maize.Two-factor random block design was used to study the effects of planting density on growth period,plant characters,ear characters and yield of two waxy maize varieties,Jingkenuo 2000 and Huatianjianuo 129,were planted with three planting densities of 37500,45000 and 52500 plants·hm^-2.The results showed that with the increase of planting density,the growth period of Jingkenuo 2000 and Huatianjianuo 129 prolonged.The plant height and ear position both decreased,and there was no obvious regularity in double ears plant rate and tiller rate.The empty stem rate,lodging rate and folding rate were all zero.The ear length gradually became shorter,and the ear diameter and bald tip length did not change significantly.The number of rows per eat and grains per row had the maximum value at the planting density of 52500 plants·hm^-2.The fresh 100-grain weight and fresh fruit ear weight had the maximum value under the density of 45000 plants·hm^-2.The fresh 100-grain weight and fresh fruit ear weight of Jingkenuo2000 were 50.4 and 316.7 g,respectively,and the 100-grain weight and fresh fruit ear weight of Huatianjianuo 129 were 48.4 and 302.2 g,respectively.Jingkenuo 2000 and Huatianjianuo 129 had the highest plot yield of 52.46 and 28.64 kg under the density of 52500 plants·hm^-2.The optimal planting density of Jingkenuo 2000 and Huatianjianuo 129 was 52500 plants·hm^-2.
作者
李青超
王立达
赵秀梅
韩业辉
刘洋
王宇先
杨莹
LI Qing-chao;WANG Li-da;ZHAO Xiu-mei;HAN Ye-hui;LIU Yang;WANG Yu-xian;YANG Ying(Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences,Qiqihar 161006,China)
出处
《黑龙江农业科学》
2020年第8期22-25,共4页
Heilongjiang Agricultural Sciences
基金
黑龙江省科技厅项目(2017YFD0300504-04)。
关键词
糯玉米
生育期
植株性状
果穗性状
产量
waxy maize
growth period
plant characters
ear characters
yield
