农学学报2025，Vol.15Issue(2)：1-7,7.
不同播期、密度、施N量对山地菜苔油菜农艺性状和产量效益的影响
Effects of Different Sowing Date,Planting Density and N Amount on Agronomic Traits and Yield Benefits of Mountain Vegetable Rapeseed
摘要
Abstract
In order to comprehensively evaluate and recommend the optimal treatment combination of sowing date,planting density and fertilizer amount for mountain vegetable rapeseed in high altitude mountainous areas,stepwise regression and grey correlation analysis methods was used,the agronomic traits and yield benefits of mountain vegetable rapeseed with 9 cultivation factor combinations at the same altitude in Yuxi from 2019 to 2021 were compared and analyzed.The results showed that,(1)with the delay of sowing date,plant height,fresh forage weight per plant,fresh moss weight per plant and harvested fresh moss weight showed a downward trend,and prolonging growth period,increasing fresh biomass per plant and fresh moss yield per plant were beneficial to the increase of moss yield;(2)the biological yield of fresh forage was different in different years among 9 combined treatments;(3)the correlation degree between the yield of rapeseed and the main agronomic factors of different combined treatments was very different;(4)there were different degrees of differences in the yields of the 9 treatment combinations in different years,and the yields of the 3 levels of sowing date and density were extremely significant and significant differences,respectively,while there was no significant difference between the 3 levels of N application amount;(5)the output value of mountain vegetable rapeseed varied to different degrees due to different treatment combinations,and the output value showed a sharp decline trend with the delay of sowing date.It was recommended that the optimal combination of sowing date,planting density and N amount of mountain vegetable rapeseed in high altitude mountainous area was sowing date on October 20+planting density of 7.5×104-10.5×104 plants/hm2+5 leaf stage N amount of 172.5-207.0 kg/hm2.关键词
山地菜苔油菜/播期/密度/施N量/逐步回归和灰色关联度分析/农艺性状/产量效益Key words
mountain vegetable rapeseed/sowing date/planting density/nitrogen fertilizer application/stepwise regression and grey relational analysis/agronomic trait/yield benefit分类
政治法律引用本文复制引用
杨进成,杨红运,李祥,郭世明,安正云,史兰芬,胡新州,陶春红,李艳兰,普加富,安建南,柏跃才,毛冬梅,刘坚坚..不同播期、密度、施N量对山地菜苔油菜农艺性状和产量效益的影响[J].农学学报,2025,15(2):1-7,7.基金项目
云南省创新引导与科技型企业培育计划"通海县蔬菜产业科技特派团"(202204BI090023) （202204BI090023）
云南省烟草公司玉溪分公司科技计划项目"峨山县烟油协同绿色增效关键技术研究与示范"(yxyc2023027). （yxyc2023027）
