Effect of nitrogen fertiliser on the yield and quality of six cultivars of autumn-sown wheat
作者:
R.J. Martin,
K.H. Sutton,
T.N. Moyle,
R.L. Hay,
R.N. Gillespie,
期刊:
New Zealand Journal of Crop and Horticultural Science
(Taylor Available online 1992)
卷期:
Volume 20,
issue 3
页码: 273-282
ISSN:0114-0671
年代: 1992
DOI:10.1080/01140671.1992.10421768
出版商: Taylor & Francis Group
关键词: wheat;Triticum aestivumL.;nitrogen;yield;quality;grain weight;grain protein;HPLC;glutenin
数据来源: Taylor
摘要:
A Held experiment was conducted to evaluate the effect of various rates and timings of nitrogen (N) fertiliser application on yield, grain quality, quantities of various classes of proteins, and milling and baking characteristics of New Zealand wheat cultivars. Six cultivars of autumn-sown wheat—‘Batten’, ‘Kotare’, ‘Oroua’, ‘Rongotea’, ‘Ruapuna’, and ‘Tui’—were grown under five N fertiliser treatments: no N; 50kg N/ha applied at late tillering; 50 kg N/ha applied at both late tillering and booting; 100 kg N/ha applied at late tillering; and 100 kg N/ha applied at late tillering and 50 kg N/ha applied at booting. The site was severely N depleted and ear numbers were low. However, weight per grain was high andrelatively unaffected by N fertiliser. Grain yield, grain protein, and Mechanical Dough Development (MDD) Bake Score increased with increasing fertiliser N, irrespective of time of application,but, between cultivars,yield was inversely related to both grainprotein and bake score. No one cultivar produced a flour with good values of all the quality characteristics, Nitrogen fertiliser improved flour and bread making quality, especially when applied at booting. There were highly significant correlations between high and low molecular weight glutenins, work input, loaf volume, and bake score. Loaf texture was highly significantly correlated with both gliadin and kernel weight.
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