论文部分内容阅读
在 φ(N) 31°45′～ 31°5 0′,λ(E) 10 4°2 0′～ 10 4°2 5′范围内 ,通过 3个杂交玉米品种在海拔 (halt) 6 0 0、90 0、12 0 0和 15 0 0m的阳坡和阴坡试验表明 :(1)海拔对杂交玉米的产量有极显著的影响 .在halt6 0 0～ 15 0 0m范围内 ,每升高 10 0m ,杂交玉米株高降抵 2 .4cm ,生育期延长 4.0d .(2 )坡向对杂交玉米产量也有极显著的影响 .与阳坡相比 ,阴坡使杂交玉米株高增加 3.9cm ,生育期延长 3.2d ,产量降低 35 2 .1kghm-2 .(3)海拔与品种的互作效应显著 ,但海拔与坡向之间、坡向与品种之间的互作效应不显著 ,并且海拔、坡向和品种三因素之间的交互作用对杂交玉米产量也没有显著影响 .认为本研究结果可为山区杂交玉米的品种布局和高产栽培提供理论依据 .表 3参 10
In the range of φ (N) 31 ° 45 ’~ 31 ° 50’, λ (E) 104 ° 2 0 ’~ 104 ° 2 5’ The positive slope and shady slope of 90 0,12 0 0 and 15 0 0m indicated that: (1) Elevation had a very significant effect on the yield of hybrid maize.In the range of 600 ~ 0m, the height of hybrid corn was reduced by 2.4cm and the growth period was extended by 4.0d. (2) The aspect had a very significant effect on the yield of hybrid maize.Compared with sunny slope, the shady slope increased the height of hybrid maize by 3.9cm, The extension of growth period was 3.2 days and the yield was reduced by 35 2 .1 kghm-2. (3) The interaction effect of altitude and variety was significant, but the interaction effect between elevation and aspect was not significant, and the elevation , The aspect and the interaction of three factors have no significant effect on the yield of hybrid maize.The results of this study can provide theoretical basis for the variety layout and high yielding cultivation of hybrid maize in mountainous area.Table 3 Reference 10