摘要
采用裂区设计,选择3个紧凑型玉米品种洛玉1号、丰玉8号、延科288和1个平展型玉米品种临奥1号,设置42000、54750和67500株/hm^23个密度,研究种植密度对不同株型玉米农艺性状和产量的影响。结果表明:随密度的增加,株高、穗位高、空秆率、秃顶度逐渐增加,而穗长、穗粗、穗行数、行粒数、百粒重和单穗粒重逐渐降低;在不同种植密度下,不同株型玉米品种产量存在显著差异,且品种和密度互作达到极显著水平;3个紧凑型玉米品种最适密度为67500株/hm^2,平展型玉米品种最适密度为42000株/hm^2。
To study the effects of various planting densities on agronomic traits and yields of maize varieties,three compact-type and one flat-type maize varieties were planted at three densities of 42000,54750,and 67500 plants/hm^2 by using the split-plot experimental design.The results showed that with the increase of planting density,plant height,ear height,barren plant percentage and barren ear tip length gradually increased,while ear length,ear diameter,ear row number,kernels per row,100-kernel weight and kernel weight per ear gradually decreased.The yields of different plant types were significantly different under various planting densities,and the interaction between the variety and planting density reached an extremely significant level.The optimum density of the compact type was 67500 plants/hm^2 and flat type was 42000 plants/hm^2.
作者
李宏志
卓从丽
邹康平
陈红
韩盛兵
卓新彦
易宗建
吴春娥
LI Hong-zhi;ZHUO Cong-li;ZOU Kang-ping;CHEN Hong;HAN Sheng-bing;ZHUO Xin-yan;YI Zong-jian;WU Chun-e(Agricultural and Rural Burean of Cili County,Cili 427200,PRC)
出处
《湖南农业科学》
2020年第6期14-16,19,共4页
Hunan Agricultural Sciences
基金
国家重点研发计划(2016YFD0300308)
湖南省农业科技创新资金项目(2018QN18)
国家产业技术体系(CARS-02-75)。
关键词
玉米
株型
种植密度
产量
maize
plant type
planting density
yield
