为了筛选出金丝皇菊在清水地区的适宜定植期和摘心次数，以株高15 cm、地径0.3 cm的健壮扦插苗为材料，采用5个定植期(主区)和4个摘心次数(副区)的二因素裂区试验设计，研究了不同定植期及摘心次数对金丝皇菊生长发育的影响。结果表明，不同定植期处理间株高和冠幅差异显著，不同摘心次数处理间株高差异显著，冠幅差异不显著。定植期为5月20和5月30日、摘心次数为2～3次的处理，特级花占10.4%，一级花占19.4%，产值较高。定植期为5月10和5月20日的处理，初花期均为10月20日；定植期为5月30日、摘心1次的处理，初花期为10月20日，摘心2次的处理延迟5 d，摘心3次的处理，延迟8 d；6月9日以后定植的，随着摘心次数的增多，初花期显著推迟。说明定植期为5月20日和5月30日、摘心次数2～3次为金丝皇菊最佳定植期和摘心次数。

To screen out the suitable planting date and pinching times of golden silk chrysanthemum in Qingshui area. Effects of different planting dates and times of pinching on the growth and development of golden silk chrysanthemum were studied by using robust cuttings with plant height of 15 cm and ground diameter of 0.3 cm as the materials and applying a two-factor split plot experimental design(main plot: 5 planting dates, subplot: 4 pinching times). Results showed that significant differences in plant heights, crown widths were detected for different planting dates, respectively, significant differences in plant heights were detected for differrent times of pinching but no significant differences were detected in crown widths for differrent times of pinching. 10.4% of supreme flowers, 19.4% of first-class flowers, and high output value was obtain when planting date was between May 20 and May 30 with 2 to 3 times of pinching. For treatments with planting date on May 10 and May 20, the initial flowering date was the same (October 20). For treatment with planting date on May 30, the initial flowering date with 1 pinching was on October 20, the initial flowering date was delayed by 5 days with 2 times of pinching, and initial flowering date was delayed by 8 days with 3 times of pinching. For those planted after June 9, the initial flowering date was significantly delayed with the increase of pinching times. The planting date between May 20 and May 30 and 2 to 3 times of pinching were considered as the optimum planting date and times of pinching for golden silk chrysanthemum.

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天水市成纪之星人才项目“金丝皇菊育苗与无公害栽培技术研究”。