稻草全量还田下氮肥运筹对双季晚稻产量和稻米品质的影响  

Effects of Nitrogen Management on Grain Yield and Quality of Late Rice under Full Amount of Straw Return

作　　者：何虎[1] 黄山[1] 才硕[1,2] 曾研华[1,3] 吴建富[1] 曾勇军[1] 潘晓华[1] 石庆华[1] 

机构地区：[1]江西农业大学双季稻现代化生产协同创新中心/作物生理生态与遗传育种教育部重点实验室/江西省作物生理生态与遗传育种重点实验室,江西南昌330045 [2]江西省灌溉试验中心站,江西南昌330201 [3]中国水稻研究所,浙江杭州310006

出　　处：《江西农业大学学报》2015年第3期385-391,共7页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家"十二五"科技支撑计划项目(2011BAD16B04;2012BAD14B14)

摘　　要：以淦鑫688为材料,研究稻草全量还田下氮肥运筹对其产量和稻米品质的影响。结果表明：稻草全量还田后晚稻增产8.8%,达到极显著,且稻米的外观、蒸煮和营养品质得到明显改善,但加工品质降低。稻草全量还田下,施氮量与产量呈抛物线相关,合理的施氮范围为180~200 kg/hm2;施氮比例为m（基肥）∶m（分蘖肥）∶m（穗肥）=5∶2∶3时,每穗总粒数和千粒质量最大,产量构成因素间协调,产量最高,稻米加工品质和外观品质最佳。A 2-year field experiment was conducted to investigate the effect of nitrogen management on grain yield and quality of late rice （ Ganxin 688） under full straw return.The results showed that straw return significantly increased rice yield by 8.8% and improved the appearance, cooking,and nutritional quality of late rice ,while the milling quality was reduced.Under straw return ,the appropriate rate of nitrogen fertilizer was 180 -200 kg/hm2.When the ratio of nitrogen fertilizer at basal, tillering, panicle initiation was 5：2：3 under straw re- turn, the number of grains per panicle, 1 000-grain weight, and grain yield were the highest with a harmonious yield component, and the milling and appearance quality performed best.

关 键 词：稻草全量还田 氮肥运筹 双季晚稻 产量 稻米品质 

分 类 号：S511.062[农业科学—作物学]