在兰州市七里河区西果园镇和魏岭乡的3个不同海拔梯度研究了种植密度对兰州百合产量的影响。结果表明，百合出苗率只与海拔高度有关，与种植密度无关；海拔高度与百合的生物学性状呈负相关；种植密度与百合株高和叶片数呈负相关，而随种植密度的增加，单株重和种球周径均表现为先增加后减小的趋势。由效应方程可得，兰州百合最佳种植密度海拔 2 200 m左右的区域为12.90万株/hm2，海拔2 400 m左右的区域为13.51万株/hm2，海拔2 600 m左右的区域为13.77万株/hm2。

The effects of planting density on the yield of Lilium davidii of Lanzhou were studied in three different elevation gradients of Xiguoyuan Town and Weiling Township in Qilihe District of Lanzhou City. The results showed that the emergence rate of Lilium davidii was only related to the altitude， but not to the planting density. There was a negative correlation between the altitude and the biological characters of Lilium davidii. The planting density was negatively correlated with the plant height and the number of leaves， while the weight per plant and the diameter of bulbs increased first，and then decreased with the increase of planting density. According to the effect equation， the optimal planting density of Lilium davidii in Lanzhou is 129，000 plants/hm2 at an altitude of about 2 200 meters， 135，100 plants/hm2 at an altitude of about 2 400 meters， and 137，700 plants /hm2 at an altitude of about 2 600 meters.

S682.2

兰州市科技计划项目“兰州百合生态原产地栽培综合增产技术研究与应用”(2019-3-7)。