Orchardgrass and Tall Fescue Utilization of Nitrogen from Dairy Manure and Commercial Fertilizer
Orchardgrass and Tall Fescue Utilization of Nitrogen from Dairy Manure and Commercial Fertilizer
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果园草和高羊茅利用奶牛粪和商品肥料中的氮
DOI：
10.2134/agronj2002.4050
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发表时间：
2002
期刊：
影响因子：
2.1
通讯作者：
E. Mikhailova
中科院分区：
文献类型：
--
作者：
D. Cherney;J. Cherney;E. Mikhailova
比较鸭茅（Dactylis glomerata L.）'好'）和高羊茅（高羊茅Schreb. 'Stargrazer'）从牛粪或商业肥料N.该研究于1994年至2000年在纽约州Willsboro的康奈尔大学贝克农场进行，在排水不良的Kingsbury粉质天（非常细，伊利石，中质Aeric Epiaqualfs）。试验设计为完全随机区组裂区，以两种年施肥量（33.6和67.2 Mg ha-1）和推荐的无机肥施用量N为主区处理，以草种为次区处理，重复6次。干物质（DM）产量的草接受较高的粪肥处理是类似的N-施肥的草2年后的粪肥应用程序，和粪肥的残留影响大，至少3年后的粪肥应用。鸭茅有较高的组织N浓度，但较低的总季节DM产量比高羊茅。鸭茅产生更大的春季收获产量，但较低的再生产量比高羊茅下两个或三个收获管理制度（1995-2000年）。在三次收获管理制度下，草种之间的氮去除没有差异。1995-1997年，无机氮肥的相对氮回收率（包括土壤供氮）为59 - 86%，有机肥为28 - 70%。在常用的利率导致的草产量和氮的吸收商业氮肥在推荐的速度。
Our objective was to compare multiyear N utilization by orchardgrass (Dactylis glomerata L. 'Okay') and tall fescue (Festuca arundinaceae Schreb. 'Stargrazer') from dairy manure or commercial fertilizer N. The study was conducted from 1994 through 2000 at the Cornell University Baker Farm, Willsboro, NY, on a poorly drained Kingsbury silty day (very fine, illitic, mesic Aeric Epiaqualfs). The design was a split plot in a randomized complete block with two annual manure rates (33.6 and 67.2 Mg ha -1 ) and a recommended rate of inorganic fertilizer N as main-plot treatments and grass species as subplot treatments, replicated six times. Dry matter (DM) yield of grass receiving the higher manure treatment was similar to that of N-fertilized grass after 2 yr of manure applications, and residual effects of manure were large at least 3 yr following manure application. Orchardgrass had higher tissue N concentrations but lower total seasonal DM yields than tall fescue. Orchardgrass produced greater spring harvest yields but lower regrowth yields than tall fescue under two- or three-harvest management regimes (1995-2000). No differences in N removal were observed between grass species under a three-harvest management regime. Relative N recovery (including N supplied from the soil) was 59 to 86% from inorganic N fertilizer and 28 to 70% from manure (1995-1997). Manure at commonly used rates resulted in grass yield and N uptake comparable to commercial N fertilization at a recommended rate.