论文部分内容阅读
以郑单958、沈单16为试验材料,研究了种植密度对耐密性不同玉米品种冠层结构的影响。结果表明:随着密度的增加,不同耐密性品种的叶面积指数、叶向值增大,叶倾角、冠层透光率降低;在同一密度下,耐密玉米品种的叶倾角较小、叶面积指数和叶向值较大、冠层透光率高;耐密品种群体冠层结构合理,增产潜力大。不同耐密性玉米品种产量对密度的反应截然不同,所以获得高产的适宜密度存在差异。
Taking Zhengdan 958 and Shendan 16 as experimental materials, the effects of planting densities on the canopy structure of different density maize varieties were studied. The results showed that with the increase of density, the leaf area index, leaf orientation index and leaf dip angle of canopy and light transmittance of canopy decreased with different density; the leaf inclination angle of tolerant maize variety was smaller under the same density, Leaf area index and leaf value larger, the canopy light transmittance is high; Canopy breed population canopy structure is reasonable, yield potential. Yields of different density maize varieties react differently to density, so there is a difference in the appropriate density for high yield.