摘要
为研究氮磷钾配施对甘草(Glycyrrhiza uralensi)生长动态和产量的影响,对其进行"3414"氮磷钾配施试验。结果表明,氮、磷、钾配施对株高的促进效应主要表现在6月下旬之前的主茎快速生长期,对根干质量增加效应则主要表现在7―8月根粗和根长增加高峰期;中等水平氮(N2)、磷(P2)、钾(K2)对甘草生物量和产量促进效应最大;氮磷钾配施以N2P2K2时甘草产量最高,达6 500kg·hm-2,较不施肥增产39.3%。推荐施氮量171kg·hm-2,施磷量292.5kg·hm-2,施钾量49.5kg·hm-2。
To study the influence of nitrogen phosphorus and potassium mb：ed fertilizer application on yield and growth dynamics of Glycyrrhiza uralensis, the ＂3414＂ mixed fert lizer application were used on G. uralensis, the accumulation of biomass and dry matter accumulation were investigated. The results indicated that the increase effect of NPK mixed fertilizer on plant height was mainly in late June before main stem fast growth period, the increase effect on root dry weight was mainlle in July-August, root diameter and root length reached high peak. The middle level of N（Ne） with middle level of PK（P2, K2） can increase accumulation of biomass, fertilizer efficiency decreased without N,P,K NePeKe was the highest yield for 6 500 kg · ha 1 , which increased 39. 3 % compared to the control. It was recommended that nitrogen application should be 171 kg · ha 1, phosphorus application should be 292.5kg · ha-1 and potassium application should be 49.5 kg · ha-1 in practice.
出处
《草业科学》
CAS
CSCD
北大核心
2014年第4期717-723,共7页
Pratacultural Science
基金
国家科技支撑计划(2011BA105B01)
甘肃省卫生厅科技攻关项目(GZK-2009-2)
甘肃省成果转化项目(0910XCNA073)
甘肃省农牧厅科技攻关项目(gyc 09-06)
关键词
甘草
“3414”配方施肥
生长动态
产量
＂3414＂Glycyrrhizc
uralensis
fertilizer application
growth dynamics
yield
