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试验研究优化灌溉与施肥对冬小麦冠层结构的影响结果表明,与限量灌溉处理相比,优化灌溉和传统灌溉处理小麦最上部3个节间明显伸长,导致株高增高10cm,旗叶叶面积减小7%,但倒2叶和倒3叶叶面积分别增加7%和20%;优化灌溉处理小麦旗叶茎叶夹角明显减小。与未施N肥处理相比,施用N肥有增大小麦株高、叶面积和茎叶夹角的趋势,且传统施N比优化施N更加明显。优化水N管理麦田各层次透光率与传统处理差异较小,但它们均显著低于限量灌溉和未施N处理。
Experimental study on the effects of optimized irrigation and fertilization on the canopy structure of winter wheat The results showed that compared with the limited irrigation treatment, the three upper internodes of the optimized irrigation and the traditional irrigation were significantly elongated, resulting in an increase of plant height by 10 cm, leaf area Decreased by 7%, but the area of 2 leaves and 3 leaves decreased by 7% and 20% respectively. The angle between stems and leaves of flag leaves was significantly reduced by optimized irrigation. Compared with the non-N fertilizer application, the application of N fertilizer increased the plant height, leaf area and stem-leaf angle of wheat, and the traditional application of N was better than the optimized N application. Optimal water N management There was little difference between the light transmittance and the traditional treatments at all levels, but they were significantly lower than those under limited irrigation and no N treatment.