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Effects of Different Nitrogen Levels on Growth and Yield ofJerusalem Artichoke in Dry Farmland(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年22
Page:
108-112
Research Field:
Publishing date:

Info

Title:
Effects of Different Nitrogen Levels on Growth and Yield ofJerusalem Artichoke in Dry Farmland
Author(s):
GU Xin; REN Cuimei; YANG Li; LIU Bing; QI Guochao; WANG Lina
Daqing Branch，Heilongjiang Academy of Agricultural Sciences，Daqing，Heilongjiang 163316
Keywords:
nitrogen fertilizer; jerusalem artichoke; botany characteristic; dry matter allocation; yield
PACS:
-
DOI:
10.11937/bfyy.20164701
Abstract:
‘Dingyu 1’ jerusalem artichoke was used as test material，a field polt planting experiment was conducted，using three nitrogen application levels per 667 m2，respectively 20 kg (N1,low fertilizer)，40 kg (N2,medium fertilizer)，60 kg (N3,high fertilizer)，taking no nitrogen application(N0) as control treatment.The effects of different nitrogen application levels on botany characteristics，dry matter allocation，tubers trait and yield of jerusalem artichoke were studied，with a view to provide some scientific reference for the high yield and high efficiency cultivation of jerusalem artichoke in Daqing area.The results showed that the average plant height of jerusalem artichoke in N2 and N3 treatments were respectively 256 cm and 276 cm，which were significantly higher than that of N1 treatment and N0 (P<0.05).Fresh weight of single plant tuber was N3＞N2＞N1＞N0.Stem and leaf dry matter accounted for the proportion of the whole plant both were N0>N1>N2>N3.Root dry matter accounted for the proportion of the whole plant was basically unchanged.Tuber dry matter accounted for the proportion of the whole plant was N3＞N2＞N1＞N0，and 667 m2 yield of N1，N2 and N3 treatments were respectively 615 kg,934 kg and 1 235 kg，increasing by 57%，139% and 216% compared with N0 (391 kg per 667 m2).It was concluded that the application of nitrogen fertilizer could promote the growth of jerusalem artichoke，increase expansion of plant，shorten distance of stem internodes，increase numbers of leaf，and enlarge reproductive organs (tubers) of plant to a certain extent.

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Last Update: 2017-11-22