Method for adjusting flowering phase of iris germanica

Abstract

The invention pertains to technical fields of plant cultivation and seed breeding and relates to a method for adjusting the flowering phase of iris germanica.The method comprises following steps: excavating 3-plus years of seedlings of iris germanica before two to three weeks of an initial flowering phase of iris germanica in Spring; transplanting to sandy loam applied with peat and urea for field plantation; thoroughly watering field planting water; manually watering twice at the interval of four to five days without rain in the seedling recovering phase and supplying no water; paying attention to water drainage in a plum rain season between June and July; dressing compound fertilizers before 2 to 3 weeks in the pre-flowering phase of Autumn; transplanting iris germanica and starting flowering during the period from the end of September to the early October around; and prolonging the flowering phase of each flower from 3 to 4 days in Spring to 6 to 8 days in Autumn and prolonging the flowering phase of each variety of flowers from 15 to 20 days in Spring to 50 to 60 days in Autumn. The method for adjusting the flowering phase of iris germanica has following beneficial effects: the flowering phase of iris germanica is adjusted and prolonged; popularization and application value of iris germanica are increased; and the diversity of outdoor flowers in Autumn and early winter of the middle and lower reaches of Yangtze river is improved.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation and breeding, and relates to a method for regulating the flowering period of German iris. Background technique [0002] German Iris (Iris germanica L.) is a perennial herb of the genus Iris in the family Iridaceae. It is a famous ornamental flower. Except for the hairs with variable colors on the ribs of the petals, this series of varieties also have large flowers, strange flower shapes, large and colorful flowers, Evergreen in four seasons and other characteristics have huge development space and prospects in landscaping, potted plants and ground cover applications. Many studies have been carried out at home and abroad on German iris hybrid breeding, tissue culture and rapid propagation, and cut flower preservation. However, most varieties of German iris only bloom once a year, and the flowering period is concentrated in April to May in spring. The flowering period is only 3 to 4 days,...

AI Technical Summary

Problems solved by technology

At present, there are very few studies on the regulation of the flowering period of perennial flowers including German iris at home and abroad. There are only related patented technologies that combine low temperature with chemical treatment to make German iris flower in advance in spring. Blooming is delayed until autumn and has not been reported yet