摘要
水稻超高产是具有超高产潜力的水稻品种在一定的生态区域中综合因素和谐互作的结果。在众多的栽培因素中 ,其群体质量与 N肥施用属主要作用因子 ,寻求二者的最佳组合数值 ,是实现超高产的关键。经试验研究表明 ,常规中粳及迟熟中粳 ,适宜基本苗为 ( 90～1 0 5)× 1 0 4· hm- 2 ,在总施纯 N量 30 0 kg· hm- 2左右的前提下 ,调整 N肥运筹比例 ,增加穗肥施用比重 ,基蘖肥∶穗肥按 5∶ 5施用 ,有利于超高产的形成。
Ultra high yield rice is the result that the comprehensive factors act on rice varieties with ultra high yield potentiality in certain ecological region.The key of realizing it is to seek the best combination of mass quality and applied nitrogen fertilizer which are main factors in many culture ones.The research showed that the suitable basic seedlings are (90～105)×10 4·hm -2 for conventional medium japonica rice and late medium japonica rice.It will do good to ultra high yield to adjust the proportion of applied nitrogen fertilizer and increase applied fertilization for head sprouting under the condition of 300kg·hm -2 total nitrogen applied.
出处
《南京农专学报》
2000年第2期39-42,共4页
Journal of Nanjing Agricultural Technology College
关键词
水稻
超高产群体质量
N肥运筹
组合数值
施肥
rice
mass quality
application of nitrogen fertilizer
combined value
