Method for grafting and propagating rhododendron hybrids

Abstract

The invention discloses a method for grafting and propagating rhododendron hybrids. In the method, compact rhododendron hybrids are used as scion, and rhododendron cosmopolitan is used as tree stock. The scion is a current-year semi-lignified strong branch which does not have diseases or insect pests, have full eyes, leaves which turn green and ripe, and terminal bud, and does not sprout or just sprouts; and the tree stock is a current-year lignified strong branch which grows luxuriantly, does not have diseases or insect pests, and has smooth and complete skin. In the method, the rhododendron hybrids are grafted by a cleft grafting method; the scion and the tree stock are covered by a plastic bag to maintain moisture, and water drops are prevented from immersing the grafting joint; and sun is shaded properly after grafting, and the illumination intensity is better to be between 90 and 126mu mol.m<-2>.s<-1>, the temperature is better to be between 25 and 28 DEG C, and the air humidity is better to be between 80 and 90 percent. The method is easy to operate, ensures low cost and high survival rate, is favorable for improving the finished product quality of potted rhododendron hybrids, and can be widely applied to commercial production of the rhododendron hybrid.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation, in particular to the field of cultivation and propagation methods of woody ornamental plants, and specifically relates to a grafting and propagation method of alpine rhododendron. Background technique [0002] Alpine Rhododendron (Rhododendron hybrids) refers to the evergreen Rhododendron in subgenus Scaleless Rhododendron, subgenus Scale Rhododendron, and subgenus Rhododendron Rhododendron, as well as new horticultural varieties bred by the above three subgenuses through hundreds of years of crossbreeding. . 70% of the original species of Rhododendron alpine originate from China and flowed into Europe more than 100 years ago. After hundreds of years of research, Europeans have bred many cultivars by crossing the original species of Rhododendron from China with European and American varieties. [0003] Alpine Rhododendron has huge raceme umbels, huge corolla, red, yellow, purple, white...

AI Technical Summary

Problems solved by technology

At present, the propagation method of Alpine Rhododendron mostly uses the method of tissue culture. This propagation method takes at least 4 years from the seedling to the flowering market. Some newly introduced varieties are difficult to grow and flower normally due to unsuitable environmental conditions.