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石洪芳,易志杰,杨特武,赵思明,周强,周欣,杨罗浩.氮钾运筹模式对高花青素特种稻产量及糙米营养品质的影响[J].华中农业大学学报,2018,37(2):43-49
氮钾运筹模式对高花青素特种稻产量及糙米营养品质的影响
Effects of nitrogen and potassium application patterns on yield and nutrition quality of a rice cultivar with high anthocyanin content
投稿时间:2017-10-11  
DOI:
中文关键词:  花青素  氮钾运筹; 产量; 稻米品质; γ-氨基丁酸; 有色稻米
英文关键词:anthocyanin  nitrogen and potassium application  yield  rice quality  gama-aminobutyric acid  colored rice
基金项目:国家重点研发计划专项(2017YFD0301400);湖北省重大科技创新计划项目(2014ABC009)
作者单位E-mail
石洪芳 华中农业大学植物科学技术学院/农业部长江中游作物生理生态与耕作重点实验室武汉 430070 1306916078@qq.com 
易志杰 华中农业大学植物科学技术学院/农业部长江中游作物生理生态与耕作重点实验室武汉 430070  
杨特武 华中农业大学植物科学技术学院/农业部长江中游作物生理生态与耕作重点实验室武汉 430070 yangtewu@mail.hzau.edu.cn 
赵思明 华中农业大学食品科学技术学院武汉 430070  
周强 湖北省黄冈市农业科学院黄冈 438000  
周欣 华中农业大学植物科学技术学院/农业部长江中游作物生理生态与耕作重点实验室武汉 430070  
杨罗浩 华中农业大学植物科学技术学院/农业部长江中游作物生理生态与耕作重点实验室武汉 430070  
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中文摘要:
      以新培育的高产棕红色稻米品种冈特优37为材料,在本田习惯施肥水平(N 159 kg/hm2、P2O567.5 kg/hm2和K2O 67.5 kg/hm2)下研究了氮、钾运筹模式对其产量和糙米营养品质的影响,以期为新品种的扩大栽培提供施肥技术指导。结果表明:在钾肥全部基施,氮肥60%作基肥、10%作分蘖肥、30%作保花肥时稻谷产量最高;合理施肥主要通过增加单位面积有效穗数而增产;施肥模式对糙米直链淀粉、支链淀粉和花青素含量影响不显著,但适当施用氮肥作保花肥可提高糙米可溶性糖含量;在相同施氮模式中增加后期钾素供应可提高糙米粗脂肪含量;在相同施钾模式下施用氮肥作保花肥有提高糙米γ-氨基丁酸(GABA)含量的趋势;在钾肥全部基施的条件下,糙米游离氨基酸含量随保花肥氮肥施用量的增加而呈先升后降趋势;在钾肥60%作基肥、40%作保花肥时,游离氨基酸含量则随保花肥氮肥施用量的增加而提高;施氮可显著提高糙米粗蛋白含量,但在不同施钾条件下施氮模式的影响规律不一致。在本试验条件下,钾肥全部作基肥,氮肥60%作基肥、10%作分蘖肥、30%作保花肥的施肥模式可作为冈特优37的适宜施肥模式。
英文摘要:
      A newly bred rice cultivar with high anthocyanin content,Gangteyou 37,was used to study the effects of nitrogen (N) and potassium (K) application patterns on the yield and the nutrition quality of dehulled rice under the total application of N 159 kg/hm2,P2O5 67.5 kg /hm2 and K2O 67.5 kg/hm2 in the field.Results showed that the highest grain yield was obtained when all K was applied as basal fertilizer,60% of N used as basal fertilizer,10% of N applied at tillering stage and 30% of N at spikelet developing stage.Appropriate fertilizer application increased the effective panicles per area,therefore,increased the yield.The fertilizer application patterns rarely affected the contents of amylose,amylopectin and anthocyanin,but proper amount of N applied at the spikelet developing stage increased the content of soluble sugar in dehulled rice.The content of crude fat in dehulled rice was increased by supplying K at the later developmental stage under the same N application pattern.Gama-aminobutyric acid (GABA) tended to increase when N was applied at the spikelet developing stage under the same K application pattern.When all K was applied as basal fertilizer,the content of free amino acid increased first and then decreased with the increase of N application rate at the spikelet developing stage.When 60% of K was used as basal fertilizer and 40% as spikelet developing fertilizer,the content of free amino acid in dehulled rice increased with the increase of N application rate at the spikelet developing stage.Applying N significantly increased the content of crude protein in dehulled rice,but its changes were inconstant under different K application patterns.It is indicated that all K applied as basal fertilizer,60% of N used as basal fertilizer,10% of N applied at tillering stage and 30% of N at spikelet developing stage is suitable to improve rice yield and nutritional quality,and can be used as appropriate fertilizer application pattern for Gangteyou 37.
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