施氮量对‘沪旱106’产量及主要农艺性状的影响  

Effects of nitrogen application rates on yield and main agronomic characters of ’Huhan 106’

作　　者：谭金松 毕庆宇 魏源 张康康 侯丹平 毕俊国[1] TAN Jinsong;BI Qingyu;WEI Yuan;ZHANG Kangkang;HOU Danping;BI Junguo(Shanghai Agrobiological Gene Center,Shanghai 201106,China)

机构地区：[1]上海市农业生物基因中心,上海201106

出　　处：《上海农业学报》2022年第6期65-69,共5页Acta Agriculturae Shanghai

基　　金：上海市水稻产业技术体系建设项目[沪农科产字(2021)第3号]。

摘　　要：以节水抗旱稻‘沪旱106’为材料,在水直播旱管条件下设置4种施氮量处理:零氮(0 N)、低氮(120 N kg∕hm~2)、中氮(240 N kg∕hm~2)和高氮(360 N kg∕hm~2),测定不同处理下节水抗旱稻产量及主要生育时期的农艺性状。结果表明:产量在中氮处理下最高,产量的提高得益于穗数与每穗粒数的同步增加。与零氮相比,施用氮肥显著增加了主要生育时期的分蘖数、叶片SPAD值、干物质量、叶面积指数,其中分蘖数和干物质重在中氮处理下最高。说明在中氮条件下,节水抗旱稻‘沪旱106’地上部农艺性状的改善是其获得高产的重要原因。The grain yield and agronomic characters at main growth stages were investigated using’Huhan 106’ as experiments under four nitrogen( N) application rate treatments:zero nitrogen(0 N),low nitrogen(120 N kg∕hm~2),medium nitrogen(240 N kg∕hm~2) and high nitrogen(360 N kg∕hm~2).The results showed that the yield was the highest under medium nitrogen treatment,the increased yield was due to the synchronous increase of the number of panicles and the number of grains per panicle.Compared with zero nitrogen,the application of nitrogen fertilizer significantly increased the number of tillers,leaf SPAD value,dry matter weight and leaf area index at the main growth stages,among which the number of tillers and dry matter weight were the highest under medium nitrogen treatment,indicating that the improvement of aboveground agronomic characters of WDR’Huhan 106’was an important reason for its high yield under medium nitrogen conditions.

关 键 词：‘沪旱106’ 氮肥 产量 农艺性状 

分 类 号：S511.6[农业科学—作物学]