摘要
为了解种植密度和施氮水平对爱沃燕麦产量、品质和经济效益的影响,试验采用完全随机区组设计,设3个种植密度150、180、210 kg/hm2(分别记作D1、D2和D3),4个施氮量0、80、110、145 kg/hm2(分别记作N0、N1、N2和N3).结果显示,同一施氮量下,爱沃燕麦的茎粗、株高、叶片数、叶宽、粗蛋白含量和粗脂肪含量随种植密度的增加而降低,不同种植密度间干草产量差异不显著(P>0.05).同一种植密度下,施氮有利于提高爱沃燕麦的干草产量、粗蛋白含量和经济收益.在3个种植密度和4个施氮量的双因素试验中,D1N2的干草产量、粗蛋白含量及净收入最高.研究表明,贵州地区爱沃燕麦的最佳种植方式为种植密度150 kg/hm2、施氮量110 kg/hm2.
Abstract
To understand the impact of planting density and nitrogen fertilizing levels on the yield,quality,and economic benefits of Ever-leaf oat.The experiment utilized a completely randomized block design with three planting densities(150,180,and 210 kg/hm2,denoted as D1,D2,and D3)and four nitrogen fertilizing rates(0,80,110,and 145 kg/hm2,denoted as N0,N1,N2,and N3).The results showed that under the same nitrogen fertilizing rate,stem thickness,plant height,leaf number,leaf width,crude protein,and crude fat of Ever-leaf oat decreased with increasing planting density,while hay yield did not show a significant difference among different planting densities(P>0.05).Under the same planting density,nitrogen fertilizization favored an increase in hay yield,crude protein content,and economic benefit of Ever-leaf oat.In the two-factor experiment with three planting densities and four nitrogen fertilizing rates,D1N2 exhibited the highest hay yield,crude protein content,and net income.The study suggests that the optimal cultivation approach for Ever-leaf oat in the Guizhou region is a planting density of 150 kg/hm2 and a nitrogen fertilizing rate of 110 kg/hm2.
基金项目
中央引导地方科技发展资金项目(黔科合中引地[2023]024)
铜仁市科技计划项目(铜市科研[2021]38号)
维普
万方数据