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[目的]为筛选东北铁线莲的适宜种植密度。[方法]在60cm垄作下,设计3个种植密度,即株距5、10、20cm,研究了2、3年生东北铁线莲产量、形态特征、干物质分配、产量增长动态、单位面积产量和叶面积指数变化。[结果]随着种植密度的增加单位面积产量随之增加,但地下部分生物量占总生物量的比例没有显著性变化,单位面积产量变化随叶面积指数增大呈对数函数增长趋势。[结论]东北铁线莲适宜种植密度为60cm垄作下约5cm株距,3年生产量可高达3740.87kg/hm2。
[Objective] The study aimed to screen suitable planting density of Clematis. [Method] Three planting densities were designed under the ridge of 60 cm, that is, the plant spacing was 5, 10 and 20 cm. The yield, morphological characteristics, dry matter partition, yield growth dynamics, yield per unit area and leaves Area index changes. [Result] As the planting densities increased, the yield per unit area increased, but the proportion of underground biomass to total biomass did not change significantly. The change of yield per unit area showed a logarithmic function with the increase of leaf area index. [Conclusion] The suitable planting density of Clematis dorsalis was about 5cm under the ridge of 60cm and the yield of 3-year could reach 3740.87kg / hm2.