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

A technology for four-flowering and powdery mildew, applied in botany equipment and methods, cultivation, horticulture, etc., can solve the problems of unsuitable garden cultivation with small area, ineffective control, large environmental pollution, etc., and improve survival Efficiency and adaptability, shortening the cultivation period, and accelerating the flowering speed

Active Publication Date: 2017-10-24
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 pre

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, the cultivation of landscape type Sizhaohua

[0036] 1) Rootstock selection and pruning

[0037] It is cultivated with the adult Sizhaohua with strong resistance to powdery mildew and anthracnose as the rootstock. The rootstock is 8 years old, the lowest branch is 1.5m high, and the tree height is about 2.5m. Before grafting, carry out layered pruning based on the characteristics of the tree shape; the bottom layer retains the rootstock species, and the upper layers are grafted with different cultivars.

[0038] 2) Layered grafting of multiple varieties

[0039] Spring grafting with flower buds and spikes comes from the cultivar Sizhaohua in North America Cornus florida Subspecies urbiniana The robust 2-3-year-old branches on the tree crown are grafted to the second layer; the third layer is grafted with an evergreen variety; in autumn, budding is carried out on the part of the crown that is not full, and the buds and ears are taken from the same year...

Embodiment 2

[0044] Embodiment 2, the cultivation of grafted seedlings

[0045] 1) Rootstock selection and pruning

[0046] Use the 2-3 year old seedlings of Chinese Sizhaohua planted in Nanjing Baima Base (seeding height 1.5m, ground diameter 1.0-2.0cm) as the rootstock, cut off all side branches before grafting, and cut off all side branches at the 0.3-0.5cm thick of the main trunk (approximately at the seedling 1.0~1.2m high) cut off.

[0047] 2) Grafting and post-grafting management

[0048] cultivars C. The 2-year-old scion with flower buds of Cherokee Chief was grafted by cutting grafting, and the survival rate of grafting reached 92%.

[0049] 3) Characteristics of grafted plants

[0050] Five years after the introduction of the original plant of the cultivar, a small amount of flower buds formed, and the growth potential was weak, and the height and diameter growth were almost negligible; severe powdery mildew appeared in the rainy season, and it did not recover slowly until a...

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PUM

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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 ...

Claims

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Application Information

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IPC IPC(8): A01G1/06A01G17/00
CPCA01G17/005
Inventor 洑香香张洋尚旭岚刘国华
Owner NANJING FORESTRY UNIV
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