摘要
在甘蔗不同生长时期,对不同的施氮水平对甘蔗的影响进行研究,揭示不同生长时期与氮素的关系,建立不同生长时期的关系模型。研究表明,在苗期,甘蔗需氮迫切,但需氮量少,在施氮253.0kg/hm2时,苗量达到最高水平;在甘蔗伸长期,施氮水平在424.6kg/hm2以内,甘蔗株高随着氮素的增加而增高;在施氮457.4kg/hm2内,产量随施氮增加而增加;甘蔗糖锤度与施氮水平呈负相关,施氮量增加,糖锤度降低。
This experiment was undertaken to determine the relationship between the different growth stages and nitrogen and to establish the relationship model in different growth stages. Result showed that the nitrogen was needed urgent in the sugarcane seedling stage, but the amount of nitrogen demand was less. Seedling amount reached the highest level in 253.0 kg/ha; Applying nitrogen levels within 424.6 kg/ha in the elongating stage of sugarcane, sugarcane height was increased with adding nitrogen amount. Cane yield was increased with adding nitrogen in 457.4 kg/ha. Cane sugar Brix was negatively correlated with nitrogen level, and nitrogen wasincreased as Brix decreased.
出处
《中国糖料》
2013年第3期15-17,共3页
Sugar Crops of China
基金
国家甘蔗产业技术体系(CARS-20-3-4)重点研究课题
关键词
甘蔗
氮素
关系模型
sugarcane
nitrogen
relationship model
