摘要
采用金正大公司生产的控释掺混肥（21—6—15）进行大葱盆栽育苗试验，并与普通复合肥进行肥效对比，分析不同施肥处理对大葱株高、茎粗、叶绿素、可溶性糖、体内全氮、全磷、全钾的影响，探讨控释肥在大葱育苗上应用的可行性及最佳施肥量。研究结果表明：控释肥养分的释放能满足大葱整个苗期对养分的吸收需求。与同量有效养分的普通复合肥相比，控释肥能明显提高土壤中的有效养分含量，可以改善葱苗的品质，提高其产量及肥料的利用率，氮素利用率达40％-50％。营养钵直径为25cm，高30cm，施入控释肥量为10g／钵时，育苗效果最佳。
In order to study the feasibility of controlled -release fertilizer （CRF,21 -6 -15 ） produced by the Kingenta Corporation on seedling culture of Welsh onion and its optimum application amount, the pot experiment was carried out. And the fertilizer efficiency of CRF and common compound fertilizer （CCF） were compared; the effects of different treatments on plant height, stem diameter, Chlorophyll, soluble sugar and the total nitrogen, potassium and phosphorus were also analyzed. The results showed that the nutrient released from CRF could meet the nutrient requirement of seedlings. Compared with the CCF treatments, the CRF treatments increased the available nutrient contents of the soil, the quality and yield of Welsh onion seedlings and the fertilizer utilization ratio＇ which arriving at 40% -50%. The application of 10 g CRF in the pot with the height of 25 cm and the diameter of 30 cm had the best effect.
出处
《山东农业科学》
2009年第2期54-57,共4页
Shandong Agricultural Sciences
基金
"十一五"国家科技支撑计划项目(2006BAD10B07)资助
关键词
控释肥
大葱苗
氮素利用率
增产率
Controlled- release fertilizer
Welsh onion seedling
Utilization rate of nitrogen
Yield increasing rate
