| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
