Rejuvenation method for dying walnut trees harmed by diseases and pests

A technology of pests and diseases, walnut, applied in the forestry field, can solve the problem of unpractical rejuvenation of walnut trees, and achieve the effect of accelerating the growth rate and improving economic benefits

Inactive Publication Date: 2016-06-01
MIANYANG WANGLIN AGRI DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods are all aimed at the normal growth of walnut trees or old walnut trees, but it is not practical for the rejuvenation of walnut trees that suffer from diseases and insect pests and are on the verge of death. Therefore, it is of great ecological and economic significance to develop a rejuvenation method suitable for endangered walnut trees infested by diseases and insect pests

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] For the abandoned walnut orchards that have been grown for 5-8 years, they are divided into two categories according to the damage of the walnut trees in the garden: one is the walnut trees whose trunks suffer less damage from diseases and insect pests. Suffering from diseases and insect pests or less than 50% of the parts are suffering from diseases and insect pests, and still have the function of supporting and nutrient transport; the other is the trunk of walnut trees that suffer from serious diseases and insect pests. The trunk of such large trees is more than 50% damaged by diseases and insect pests Basic loss of support and nutrient transport; rejuvenation with different methods:

[0025] For large walnut trees whose trunks suffer from light pests and diseases:

[0026]On March 18, 2010, cut off the trunk from 1m above the ground, and select the middle part of annual branches with a thickness of 2.5-4cm, well-developed, small pith, and no damage by diseases and in...

Embodiment 2

[0030] The same as embodiment 1 will not be repeated, the difference is:

[0031] In the 1st year after the grafting of the walnut tree with the lighter damage by disease and insect in the walnut orchard, and the 1st year after the grafting of the heavier walnut tree with the heavier damage by disease and insect, adopt the same method to control insects, sterilize and spray on the ground, that is, in 4 In May, adopt methods such as manual capture, trapping, knocking on tree trunks to shake off, or use steel wire ball brushes to control long-term beetles, small jellyfish, moths, and scale insect adults; , 40% omethoate EC or 10% imidacloprid wettable powder are placed in the trunk wormhole, and the hole is sealed with mud to remove the borer pests; Spray 800 times liquid of % mineral oil on the leaves to kill the eggs and adults of leaf-eating insect pests; in July, spray 800 times liquid of 97% mineral oil and 1000 times liquid of 40% magicide on the leaves and trunks to remov...

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PUM

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Abstract

The invention relates to a rejuvenation method for dying walnut trees harmed by diseases and pests and belongs to the technical field of forestry. Two methods are provided for rejuvenation of walnut trees with trunks harmed by diseases and pests at different degrees. The methods both include the steps of trunk cutting and grafting. In the first step of trunk cutting, for trees slightly harmed by diseases and pests, trunks are cut off from the portions 1 m away from the ground in the middle-ten-day period of March; for aged trees seriously harmed by diseases and pests, trunks are sawn off from the portions 0.05 m away from the ground in the middle-ten-day period of March, and two new strong branches of each tree are cultured in an induction mode and are cut off from the portions 0.15 m away from the ground when walnut trees sprout in spring in the second year. In the second step of grafting, the middle segments of fine annual branches with the thickness of 2.5-4 cm are selected as scions, grafting is carried out on the sections, with smooth bark, of stocks, blank parts of 3 mm are reserved at the upper ends of the scions and are tightly wrapped and bundled, two scions are grafted in the symmetric north-south directions or east-west directions of each stock respectively, the grafted branches are covered with waterproof kraft paper envelops after grating, and the lower ends are not sealed. By means of the rejuvenation method, the vigor of walnut trees can be recovered.

Description

technical field [0001] The invention relates to a technique for rejuvenating a dying walnut tree, in particular to a method for rejuvenating an endangered walnut tree that is endangered by diseases and insect pests, and belongs to the technical field of forestry. Background technique [0002] During the period of returning farmland to forests, most of the walnut seedlings planted in my country were seeded and bred. The varieties were hickory, iron walnut, etc., which showed the characteristics of late fruit, poor quality, low yield per plant, small fruit, thick shell, and low kernel yield. The degree of breeding is low. Due to the long period and slow effect, most farmers only pay attention to planting, but their awareness of scientific management of walnut trees is weak. Most of the walnut orchards are abandoned and left to fend for themselves. There is no economic benefit, and it also affects the effectiveness of the project of returning farmland to forests. [0003] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G1/06A01G13/00A01C21/00
CPCA01C21/005A01G13/00A01G17/005A01G2003/005A01G2/30
Inventor 罗建勋袁弘张长春刘芙蓉
Owner MIANYANG WANGLIN AGRI DEV CO LTD
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