摘要
以不同类型的4个玉米品种为材料,探讨产量和品质等相关性状对种植密度的响应。设置5个不同梯度的种植密度,对供试品种进行农艺和品质性状的测定。结果表明,从生物产量上看,‘郑单958’、‘丰禾4号’、‘龙育1号’和‘黑饲1号’的最适种植密度分别为7.5万株/hm2、8.2万株/hm2、8.2万株/hm2~9.0万株/hm2和8.2万株/hm2。不同种植密度下,供试品种穗位高差异不显著,3个青贮玉米品种株高均无显著差异。在相同种植密度下,普通玉米品种‘郑单958’的株高和穗位高显著低于3个青贮玉米。不同品种的4个品质性状对种植密度的响应存在差异。种植密度与生物产量间的相关性分析表明,‘黑饲1号’呈负相关,其他3个品种呈正相关。因此,需要根据品种特点进行合理密植,以期达到效益最大化。
In this study, four different maize varieties were used to explore the influence of planting density onthe biomass and quality traits. In order to determine the agronomic and quality traits of the tested varieties, fiveplanting densities were designed. The results showed that the optimum planting density of‘Zhengdan 958’,‘Fenghe 4’,‘Longyu 1’and‘Heisi 1’were 75000 plants/hm2, 82000 plants/hm2, 82000-90000 plants/hm2 and 82000 plants/hm2. Under different planting densities, difference of the ear height of the four varieties wasnot significant, and plant height of three silage maize varieties also had no significant difference. The plantheight and ear height of‘Zhengdan 958’were lower than that of the other three silage maize varieties with thesame plant density. Quality traits of the four varieties had different responses to corresponding planting density.Correlation between planting density and biomass yield of‘Heisi 1’was negative, while that of the other threevarieties were positively correlated. Therefore, in order to achieve high biomass, reasonable plant densityshould be chosen based on the characteristics of variety.
出处
《中国农学通报》
2015年第27期53-58,共6页
Chinese Agricultural Science Bulletin
基金
黑龙江省农业科技成果转化项目"优质多抗青贮玉米新品种丰禾4号高效生产集成技术研究与示范"(NB08B008)
黑龙江省教育厅科学技术项目"玉米抗冷出苗优异种质发掘及抗冷相关基因克隆"(12541628)
关键词
玉米
种植密度
农艺性状
品质性状
maize
planting density
agronomic traits
quality traits
