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/hm2,成穗数增加10.65万稳/hm2、千粒重减少0.22 g、产量增加150.45 kg/hm2;施氮量每增加15 kg/hm2 N,实粒数增加1.07个、产量增加450.75 kg/hm2.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/hm2时“轻施返青肥,重施基肥和拔节肥”方式、施氮量240 kg/hm2 N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.
Abstract
[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/hm2 seeding quantity could enhance 106.5 thousand ears/hm2,reduce 0.22 g 1 000-grain weight and increase 150.45 kg/hm2 yield.Every increase of 15 kg/hm2 N fertilizer application could enhance 1.07 grains and 450.75 kg/hm2 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/hm2,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/hm2.[Conclusion] This research provides theoretical basis for the extension of super late sowing wheat following rice.
基金项目
国家小麦产业技术体系项目(CAR-03)
江苏省农业自主创新项目(CX15 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(SX2016161)
国家小麦产业技术体系项目(CARS-3-2-13)
江苏省农业科技自主创新资金项目(CX 14 2008)
国家科技期刊平台
NSTL
维普
万方数据