不同施氮量对甜高粱农艺性状及产量的影响  

作　　者：孙亮 兰剑[2] 

机构地区：[1]兰州大学,兰州730000 [2]宁夏大学,银川750000

出　　处：《智慧农业导刊》2023年第1期36-40,共5页JOURNAL OF SMART AGRICULTURE

摘　　要：采用完全随机区组设计,研究4个氮肥处理对“海牛”甜高粱(Sorghum bicolor L.Moench var.Hainiu)的节数、茎粗、叶片数、株高、单株鲜草产量、干重、鲜草产量及茎秆糖锤度等8个参数的影响,并分析8个参数间的相关性,旨在为生产中甜高粱施肥提供参考。试验表明,施氮量对株高、茎粗、叶片数、节数、单株产量和单位面积鲜干草产量有显著影响(p<0.05),当施氮量为222.45 kg/hm2时甜高粱的植株最高,茎最粗,叶片数和茎秆节数最多,单株鲜草产量、单位面积鲜草产量和干草产量均最高;而施氮量对茎秆糖锤度无显著性差异(p>0.05)。因此,在试验范围内,施氮量为222.45 kg/hm2时“海牛”甜高粱的农艺性状达到最优,饲草产量最高,为试验最适施氮量。A completely randomized block design was used to study the effects of four nitrogen treatments on sweet sorghum(Sorghum bicolor L.Moench var.The effects of 8 parameters such as node number,stem diameter,leaf number,plant height,yield per plant,fresh hay yield and stem brix of Hainiu),and the correlation among 8 parameters were analyzed in order to provide reference for fertilization in the production of sweet sorghum.The results showed that nitrogen application rate had significant effects(p<0.05)on plant height,stem diameter,leaf number,node number,yield per plant and fresh hay yield per unit area.When nitrogen application rate was 222.45 kg/hm2,sweet sorghum had the highest plant height,stem diameter,leaf number and stem node number,fresh grass yield per plant,fresh grass yield per unit area and hay yield,but there was no significant difference in stem sugar brix(p>0.05).Therefore,in the range of the experiment,the agronomic characters of"manatee"sweet sorghum were the best and the forage yield was the highest when the nitrogen application rate was 222.45 kg/hm2.

关 键 词：甜高粱 施氮量 农艺性状 糖锤度 产量 

分 类 号：S514[农业科学—作物学]