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Regulation methods to reduce the damage of the platysma to host plants

A technology for host plants and platysma, which is applied to the prevention and control of platysma, and the field of controlling platypus harm to host plants based on the stand structure, which can solve the problem of huge economic cost of chemical control, unsustainable effects, and contradictory environmental positioning. problems, to achieve the effect of making full use of environmental elements, conducive to tree growth, and increasing the difficulty of diffusion

Active Publication Date: 2017-03-22
INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical control is contrary to the environmental positioning of the main distribution area of ​​the Kunyu green sawfly, which will cause phytotoxicity to the relevant animals and plants in the area, and the economic cost of chemical control is huge and the effect is not long-lasting

Method used

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  • Regulation methods to reduce the damage of the platysma to host plants
  • Regulation methods to reduce the damage of the platysma to host plants
  • Regulation methods to reduce the damage of the platysma to host plants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1 Regulation of Kunyu Mountain sawfly based on stand structure

[0047] (1) Allocation pattern of tree species in the forest

[0048] To transform the tree composition of the Kunyu Mountain forest plot, the host plant pine (one or more of red pine, black pine, Korean pine, Huashan pine, loblolly pine, Bank pine, or American-Canada red pine) and non-host plants were used. The combination mode of Hovenia acerba mixed species, through tending, thinning, replanting and other measures, makes the proportion of non-host Hovenia acerba reach 28% of the total number of trees.

[0049] Thinning and tending can be divided into three times. For the first two thinnings, host plants with higher density of host plants, poorer growth environment and tree vigor are selected as thinning objects. The intensity of each thinning depends on the site conditions. The general intensity of thinning is The number of plants accounts for 15%-20% of the total number of plants before the fir...

Embodiment 2

[0054] Example 2 Regulation of Kunyu Mountain sawfly based on stand structure

[0055] The specific method is the same as in Example 1, the difference is that the composition of the trees in the forest plot of Kunyu Mountains is transformed, and the host plant pine (red pine, black pine, Korean pine, Huashan pine, loblolly pine, bank pine or American-Canada red pine) is used. One or more) mixed with the non-host plant Populus ussuriensis, through measures such as tending, thinning, and replanting, the proportion of the non-host Populus reached 28% of the total arbor plants, and the host plant in the woodland The plants were randomly distributed, the non-host plants were aggregated, and the whole arbor was randomly distributed.

Embodiment 3

[0056] Example 3 Regulation of Kunyu Mountain sawfly based on stand structure

[0057] The specific method is the same as in Example 1, the difference is that the composition of the trees in the forest plot of Kunyu Mountains is transformed, and the host plant pine (red pine, black pine, Korean pine, Huashan pine, loblolly pine, bank pine or American-Canada red pine) is used. One or more) mixed with non-host plants Hovenia acerba and Populus ussuriensis, through tending, thinning, replanting and other measures, so that the ratio of non-host acerba and Populus reaches 30% of the total arbor plants, the host plants in the woodland are randomly distributed, the non-host plants are aggregated, and the arbor is randomly distributed as a whole.

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Abstract

The invention discloses a regulating method for alleviating harm of cephalcia kunyushanica to host plants and belongs to the field of forestry harmful insect prevention. The regulating method includes mixing and matching non-host plants with negative species association with cephalcia kunyushanica among the host plants, and preferentially includes performing physical interference on mature and young cephalcia kunyushanica, cleaning the ground of a forest and trimming host plant branches with cephalcia kunyushanica nests. The regulating method has the advantages that by means of changing a specific forestry distribution structure, the forestry distribution structure is changed in the direction not beneficial to survival of the cephalcia kunyushanica, so that the cephalcia kunyushanica is hard to migrate and spread by flying, and the harm is transferred; by the aid of physical measurements, initial population density of the cephalcia kunyushanica is lowered; by combining the mixing and matching measurement with the physical measurements, population quantity of the cephalcia kunyushanica can be kept in a low level, so that the harm to the host plants is decreased effectively, and an ecological environment with the cephalcia kunyushanica is maintained and protected.

Description

technical field [0001] The invention relates to a method for preventing and controlling the squid sawfly, in particular to a method for regulating and controlling the gill saw wasp harming host plants based on stand structure, and belongs to the field of prevention and control of forestry harmful insects. Background technique [0002] China's forest resources are not rich, and the variety of forest pests and relatively extensive forest management strategies have caused huge economic losses in China's forestry every year. Therefore, it is imminent to regulate forest pests reasonably and effectively. [0003] Cephalcia kunyushanica belongs to the genus Cephalcia kunyushanica of the order Hymenoptera. It has one generation per year in Kunyu Mountain. It uses mature larvae to burrow into the soil as a soil chamber and become a pre-pupae to survive the summer and winter. This oligophagous leaf-eating pest was first discovered in 1983. It was first found in Korean pine forests an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G13/00
CPCA01G13/00
Inventor 梁军潘琪张星耀
Owner INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
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