大麦与谷类科学2025，Vol.42Issue(2)：27-31,5.DOI:10.14069/j.cnki.32-1769/s.2025.02.005
播种密度和施氮量对保啤麦28号农艺性状与经济效益的影响
Effects of Sowing Density and Nitrogen Application Rate on Agronomic Traits and Economic Benefits of Baopimai No.28
摘要
Abstract
In order to explore the optimum sowing density and nitrogen application rate of the barley variety 'Baopimai No.28',and provide scientific basis for widespread demonstration and promotion.The effects of sowing density(basic seedlings of 1.8×106,2.4× 106 and 3×106 plants/hm2)and nitrogen application rate(450,525 and 600 kg/hm2 urea)on barley grain yield were studied.The results showed that the effective panicles increased with the increase of density and nitrogen application rate.The number of filled grains per spike in low and medium density treatments(1.8×106 and 2.4×106 plants/hm2)increased with the increase of nitrogen application rate,and the number of filled grains per spike in high density treatment(3 × 106 plants/hm2)increased first and then decreased with the increase of nitrogen application rate.The 1 000-grain weight decreased with the increase of nitrogen application rate and density.The yield increased with the increase of nitrogen application rate and density.The three treatments of 600 kg/hm2 urea had higher economic benefits.The optimum basic seedling of Baopimai No.28 was 2.4 × 106 plants/hm2,and the optimum nitrogen application rate was 600 kg/hm2 urea.关键词
大麦/种植密度/施氮量/产量/经济效益Key words
Barley/Density/Nitrogen application rate/Yield/Economic benefit分类
农业科学引用本文复制引用
赵加涛,刘猛道,付正波,孙利娟..播种密度和施氮量对保啤麦28号农艺性状与经济效益的影响[J].大麦与谷类科学,2025,42(2):27-31,5.基金项目
国家大麦青稞产业技术体系"保山综合试验站"项目(CARS-05) （CARS-05）
云南省技术创新人才培养对象项目(202105AD160044). （202105AD160044）
