不同施氮量对食用甘薯生长及产量的影响  

Effects of Nitrogen Application on Growth and Yield of Edible Sweet Potato

作　　者：姚立春 谭学留 姜新 

机构地区：[1]山东省聊城市东昌府区农业技术推广中心,山东聊城252000 [2]山东省聊城市东昌府区植物保护站,山东聊城252000 [3]山东省聊城市东昌府区土壤肥料工作站,山东聊城252000

出　　处：《安徽农业科学》2015年第23期33-35,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]探索甘薯最佳施氮量,指导聊城市东昌府区甘薯生产。[方法]采用随机区组试验,设0、75、150 kg/hm23个氮肥水平,分析不同施氮量对甘薯生长及产量的影响。[结果]最长蔓长施氮处理N2和N3高于未施氮处理;茎叶鲜重和干重在施氮处理N2水平下最高,在N1处理下最低;收获时N2处理块根鲜重和干重均达最大值,N3处理最小。[结论]综合甘薯产量、品质及经济效益等多方面因素,施氮量以75 kg/hm2为宜。[Objective]The aim is to guide the sweet potato production and find out the optimum level of nitrogen application in Dongchangfu,Liaocheng City. [Method]The effects of nitrogen application on growth and yield of edible sweet potato were studied by using randomized block experiment under three nitrogen levels. [Result] The longest length of stem under N2 and N3 treatment was higher than non-nitrogen treatment. The fresh and dry weight of aboveground part under N2 treatment reached to highest,that of under N1 treatment reached to lowest. The fresh and dry weight of storage root under N2 treatment reached to highest,that of under N1 treatment reached to lowest when harvesting.[Conclusion]Considering the comprehensive factors such as yield,quality and economic benefit,N application at 75 kg/hm^2 is appropriate.

关 键 词：施氮量 食用甘薯 产量 品质 影响 

分 类 号：S531[农业科学—作物学]