Method for controlling powdery mildew and anthracnose and culturing landscape type kousa dogwood based on heteroplastic grafting

Abstract

The invention discloses a method for controlling powdery mildew and anthracnose and culturing landscape type kousa dogwood based on heteroplastic grafting. The method includes the steps of selecting 2-3-year-oil seedlings or adult big trees of East Asia kousa dogwood tree seeds wide in distribution, strong in resistance and vigorous in growth as stocks, selecting a plurality of North America kousa dogwood culture species high in ornamental value and easily affected with powdery mildew and anthracnose as grafts, obtaining heteroplastic grafting plants strong in disease resistance and adaptability through flower bud scion grafting in early spring or bud grafting in autumn, and obtaining multiple species of layered crown grafting landscape type kousa dogwood through after-grafting management. The influences of powdery mildew and anthracnose on the adaptability and ornamental effect of the North America kousa dogwood culture species are effectively controlled through the heteroplastic grafting technology, the East Asia kousa dogwood tree seeds strong in local disease resistance and vigorous in growth are used as the stocks, the disease resistance and adaptability of grafts are greatly improved, the survival rate and adaptability of the imported culture species are increased, and the ornamental value of the species is sufficiently embodied.

Description

technical field [0001] The invention relates to a method for controlling powdery mildew and anthracnose and cultivating landscape-type Sizhaohua based on interspecific grafting, and belongs to the technical fields of plant grafting propagation technology and plant variety disease prevention and control. Background technique [0002] Quattrophyllum ( Cornus ) is a plant of the Cornaceae family, named after two pairs of symmetrical petal-shaped bracts outside the inflorescence. The Sizhaohua tree is beautiful in shape, round and umbrella-shaped, with horizontally extending branches and distinct layers. The flowering period of Sizhaohua is generally in late spring and early summer. The cultivated species of Sizhaohua in North America usually flower first and then leaves or flowers and leaves are placed together; the color of flower bracts is milky white, pink, dark red, etc.; the number of flowers is large, and the flowers are full when blooming The tree is like a bee flying ...

AI Technical Summary

Problems solved by technology

Among them, some Sizhaohua varieties do not start to show the disease until the middle stage of infection. Immediately smear or spray chemical fungicides for control. The workload is heavy, the pollution to the environment is also great, and the control effect is not obvious.

[0007] At present, there are many ornamental tree species in my country, but the flowering period is mostly concentrated in March-April, and there are fewer flowering tree species in May-June; and most of the ornamental tree species are large in size, which is not suitable for small garden cultivation