超迟播稻茬小麦播种量·施氮量和氮肥运筹方式  

Seeding Quantity,N Fertilizer Application Amount and Regime of Super Late Sowing Wheat Following Rice

作　　者：季仁达 杨步琴 石广跃[3] 赵晓斌 王伟中[5] 

机构地区：[1]洪泽县高良涧街道农业技术服务站,江苏淮安223100 [2]洪泽县岔河镇农业技术推广服务站,江苏淮安223100 [3]淮安市农业技术推广中心,江苏淮安223001 [4]洪泽县农业技术推广站,江苏淮安223100 [5]淮安市农业科学研究院,江苏淮安223001

出　　处：《安徽农业科学》2017年第5期29-32,共4页Journal of Anhui Agricultural Sciences

基　　金：国家小麦产业技术体系项目(CAR-03);国家小麦产业技术体系项目(CARS-3-2-13);江苏省农业自主创新项目[CX(15)1002];国家科技支撑计划课题(2012BAD04B08);江苏省科技支撑计划课题(BE2014393);江苏省农业三项工程农业科技综合展示基地项目[SX(2016)161];江苏省农业科技自主创新资金项目[CX(14)2008]

摘　　要：[目的]研究超迟播稻茬小麦适宜的播种量、施氮量、氮肥运筹方式。[方法]研究不同处理的基本苗及产量构成,比较了不同氮肥运筹方式下的成穗数、每穗实粒数、千粒重、产量。[结果]不同的播种量、施氮量、氮肥运筹方式对成穗数、每穗实粒数、千粒重、产量有极显著影响。播种量每增加15 kg/hm^2,成穗数增加10.65万穗/hm^2、千粒重减少0.22 g、产量增加150.45 kg/hm^2;施氮量每增加15 kg/hm^2N,实粒数增加1.07个、产量增加450.75 kg/hm^2。氮肥运筹方式的影响随播种量、施氮量的变化而变化。产量最高的氮肥运筹方式是播种量480 kg/hm^2时"轻施返青肥,重施基肥和拔节肥"方式、施氮量240 kg/hm^2N时"氮肥后移、返青肥和孕穗肥等量"方式。[结论]该研究为超迟播稻茬小麦的推广提供了理论基础。[ Objective ] To research the proper seeding quantity, N fertilizer application amount and regime of super late sowing wheat following rice. [ Method] We researched the basic seedlings and yield components of different treatments, compared the ear number, grain number per panicle, 1 000-grain weight and yield under different N fertilizer application regimes. [ Result ] Seeding quantity, N fertilizer application amount and regime showed extremely significant impacts on ear number, grain number per panicle, 1 000-grain weight and yield. Every increase of 15 kg/hm^2 seeding quantity could enhance 106. 5 thousand ears/hm^2, reduce 0. 22 g 1 000-grain weight and increase 150.45 kg/hm^2 yield. Every increase of 15 kg/hm^2 N fertilizer application could enhance 1.07 grains and 450.75 kg/hm^2 yield. The effects of N fertilizer application regime changed with different seeding quantity and N fertilizer application amount. The highest yield of N fertilizer application regime was that ＂light turn-green-fertilizer, heavy base-fertilizer and jointing-fertilizer＂ when seeding quantity was 480 kg/hm^2, and ＂ N-fertilizer top-dressing time deferring, turn-green-fertilizer being the same amount as booting fertilizer＂ when N fertilizer application amount was 240 kg/hm^2. [ Conclusion] This research provides theoretical basis for the extension of super late sowing wheat following rice.

关 键 词：小麦 播种量 施氮量 氮肥运筹方式 

分 类 号：S512.1[农业科学—作物学]