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作 者 ：谢黎虹 叶定池 胡培松 陈 能 唐绍清 罗炬 焦桂爱

期 刊 ：植物营养与肥料学报 2011年 17卷 4期 页码：789-794

关键词：水稻；甬优6号；氮肥；产量；品质；

Keywords:rice, Yongyou 6, nitrogen, yield, quality,

摘 要 ：以籼粳杂交水稻甬优6号为试材，于2006和2007年分别研究了施氮量和施用方式对其产量与品质的影响，以明确该品种在温州种植点适宜的施氮量及方式，达到高产与优质协调。结果表明，随施氮量递增，稻谷产量基本呈先升后降的趋势，以施N 139 kg/hm2时，采用以基肥:分蘖肥:促花肥:保花肥为6:2:1:1（处理II）的施肥方式产量最高。施氮处理稻米的糙米率、精米率、整精米率、垩白度、胶稠度、蛋白质及其谷蛋白等品质指标均明显高于不施氮处理，但施氮处理间差异不显著。随施氮量增加，峰值粘度、崩解值和回复值依次递减，消减值依次递增。不同施用方式处理峰值粘度差异显著；施氮量和施用方式处理间米饭的硬度和粘性均达显著差异水平。施用方式处理III的硬度与处理II差异不显著，但粘性显著高于后者。考虑产量和品质两因素，本试验中甬优6号在温州地区可以选择施N 139 kg/hm2，并采用基肥:分蘖肥:促花肥:保花肥为6:2:1:1的施用方式，以实现高产和优质。

Abstract:The effects of N fertilizer application rate and management strategy on grain yield and quality of rice variety “Yongyou 6” were analysed in 2006 and 2007, respectively; in order to determine optimal N applied amount and management in Wenzhou region. The results showed that N fertilizer application increased rice variety “Yongyou 6” grain yield. Maximum grain yield of variety “Yongyou 6” was obtained(approx 8470 kg/hm2) at the application rate of 139 kg/hm2 with management of II( basis: tillering: spikelet-promoting: spikelet-sustaining was 6:2:1:1). N fertilizer application increased rice quality parameters of brown rice recovery, milled rice recovery, head milled rice recovery, chalkiness, Gel consistency, protein and glutenin content, but there were no significant difference among N application rate of 99 kg/hm2,119 kg/hm2,139 kg/hm2 and 159 kg/hm2.With the increase of N application rate, RVA peak, breakdown and consistency viscosity values decreased continuously, and setback values increased continuously, respectively. The influence of N application rate and its management strategy on hardness and adhesiveness of cooked rice texture were all significant. Considering both grain yield and quality factors ,simultaneously, fertilizer N application of 139 kg/hm2 and N management method of II( basis: tillering: spikelet-promoting: spikelet-sustaining was 6:2:1:1) were proposed for “Yongyou6” variety in Wenzhou region.

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