Method for breeding tulip seedballs under Shandong coastal climate condition

Abstract

Although the ecological condition of coastal regions in Shandong Province is different from the ecological condition in a tulip source region, through long-term study and experiments, the invention provides a method for breeding tulip seedballs under the Shandong coastal climate condition. Multiple factors such as seedball pretreatment, soil selection, fertilizer selection and use, cultivation time, cultivation patterns, nutrient solution preparation, the sizes of greenhouses, the set time of the greenhouses, the removal time of the greenhouses are repeatedly studied and improved, the method is finally acquired through years of experiments. By the adoption of the method, 1-2 first-level commodity seedballs with the cross-section diameter being more than 12cm, 2-3 second-level commodity seedballs with the cross-section diameter ranging from 8cm to 10cm, 3-6 third-level and fourth-level cormels with the cross-section diameter being below 8cm can be obtained in each plant, wherein the cross-section diameter of the minimum cormels is more than 4cm, and the cormels are uniform in size. The seedball reproduction coefficient completely reaches the international production standard.

Description

technical field

[0001] The invention relates to a method for breeding tulip bulbs, in particular to a method for breeding tulip bulbs under the climate conditions along the coast of Shandong. Background technique

[0002] Tulips are spring-flowering bulbs, native to the Mediterranean coast and the warm temperate regions of Asia Minor. They like mild winters and cool summers. The wintering requires a certain amount of cooling, and the growth conditions are extremely strict. When the bulbs are naturally divided into bulbs, they need to be sown in autumn (October-November), bloom in the spring (March-May) of the following year, and harvest bulbs in summer (June-July). If the overwintering temperature is low or high or the high temperature in the growing season all leads to the smaller and smaller spring flower bulbs, the large-scale breeding area is very narrow. That is, the natural division of tulip bulbs for breeding bulbs is limited by ecological conditions such as tempera...