摘要
为了筛选出北方地区秋冬季适宜种植、越冬与翌年返青的覆盖作物(绿肥作物)品种,在天津春玉米区连续2年进行20个冬绿肥品种田间种植试验,以生物量及越冬稳定性作为指标进行评估。结果表明:毛叶苕子、黑麦草、二月兰、黑麦4个品种资源,连续2年表现为冬前均有较好覆盖,冬后成功返青,翻压前生物产量平均在3400 kg/hm^(2)以上,是相对早发的冬绿肥作物;4月末最适宜翻压时期,二月兰处于盛花期,毛叶苕子处于初花期,而黑麦和黑麦草处于孕穗期。
20 winter green manure varieties were planted in spring maize area for two consecutive years to choose the suitable manure species for overwintering and turning green in north China, and the biomass and overwintering stability of green manure were used as the evaluation indicators. The results showed that hairy vetch, ryegrass, Orychophragmus violaceus and rye had better coverage before winter and turned green successfully after winter of two years with the biological yield of more than 3400 kg/hm^(2), which were winter green manure crops that had earlier growth. The most suitable period for turning over was at the end of April,when Orychophragmus violaceus was at the full bloom stage, hairy vetch was at the initial bloom stage and ryegrass and rye were at booting stage.
作者
赵秋
张新建
宁晓光
Zhao Qiu;Zhang Xinjian;Ning Xiaoguang(Tianjin Academy of Agricultural Sciences,Tianjin 300192)
出处
《中国农学通报》
2021年第33期50-54,共5页
Chinese Agricultural Science Bulletin
基金
现代农业产业技术体系建设专项资金“绿肥”(CARS-22)
天津市农业成果转化与推广项目“稻田绿肥-小站稻优质生产关键技术集成与示范”(201904040)。
关键词
冬绿肥
轮作
生物产量
越冬稳定性
北方地区
winter green manure
crop rotation
biological yield
overwintering stability
north China
