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Method for controlling citrus tree diseases and insect pests by biochemical combination

A technology for pests and citrus, applied in the field of plant protection, can solve problems such as incompatibility of technologies, achieve good promotion and application prospects, the method is simple and feasible, and the effect of reducing the use of pesticides

Inactive Publication Date: 2020-02-07
GANNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to solve the problem of incompatibility between chemical pesticide control and "controlling mites with mites" technology, change the method of chemical pesticide application, change foliage spraying to root application, and prevent predatory mites from contacting chemical pesticides , so that it can release predatory mites to control spider mites while controlling pests

Method used

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  • Method for controlling citrus tree diseases and insect pests by biochemical combination
  • Method for controlling citrus tree diseases and insect pests by biochemical combination

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Breeding of predatory mites:

[0022] (1) selection of predatory mite; (2) artificial breeding of predatory mite; (3) release of predatory mite;

[0023] The predator mite selected in the step (1) is Amblyseius pasteurii;

[0024] Described step (2) breeding process is:

[0025] (1) Place a circular sponge with a diameter of 4 cm in a petri dish with a diameter of 7 cm, cover the sponge with a layer of cellophane, then place a mixture of 20 g of fresh asparagus leaves and flour in equal proportions and 300 acaroid mites, add 15 ml of water in the petri dish, The height of the water surface is one-third of the height of the petri dish;

[0026] (2) placing the A. pasterii with eggs in the mixture of fresh asparagus leaves and flour in equal proportions, the A. pasterii with eggs: the ratio of the number of acarids is 1:100;

[0027] (3) The culture dish is then placed in an artificial climate box at 28° C., RH75%, photoperiod: L:D=14h:10h;

[0028] (4) Check the deve...

Embodiment 2

[0031] The implementation orchard is the 500 mu navel orange orchard of Yugoulu Family Farm, Changlong Town, Chongyi County, Ganzhou City. It was planted in March 2016 and the experiment was carried out in 2018. Apply 200 mg / L systemic pesticide to the roots in early March, late May, and late July, and irrigate 10-15 catties of pesticide solution for each citrus tree, and release it in early June and early September Release Amblyseius pasteurii, no less than 1000 per citrus tree. After June, no insecticides are sprayed, only fungicides are sprayed to prevent and control citrus sand and canker. 5 trees were randomly surveyed during the spring shoot, summer shoot and autumn shoot, and each tree was divided into five directions: east, west, south, north, and middle, and three shoots were taken in each direction to investigate citrus psyllids, leafminers, For the occurrence of whiteflies, aphids and red spiders, as long as there is a leaf harmful to each branch, it will be counted...

Embodiment 3

[0036] The implemented orchard is a 100-acre navel orange orchard at Xinghong Family Farm, Zhufang Township, Nankang District, Ganzhou City. It was planted in October 2015 and the experiment will be carried out in 2019. Apply 200mg / L systemic pesticides to the roots in early March, late May and late July respectively. Each citrus tree is injected with 20-30 catties of liquid medicine through a fertilization gun, and in early June and early September. Release Amblyseius pasteurii by means of spreading, no less than 1000 per citrus tree. The specific experimental results are shown in Table 2. Injection application using a fertilizer gun inserted into the soil can also control citrus psyllids, leaf miners, whiteflies and aphids.

[0037] Table 2. The control effect of navel orange orchard in Xinghong Family Farm, Zhufang Township, Nankang District, Ganzhou in 2019

[0038] pest The occurrence of spring shoots Happenings of summer shoots What happens in autumn shoo...

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Abstract

The invention provides a method for controlling main insect pests such as citrus psylla, leaf miners, aphids, whiteflies and red spider mites by combining root application and predatory mite release.According to the method, systemic pesticides are applied under crown water drips during spring shoot, summer shoot and autumn shoot germination, predatory mites (amblyseius barkeri) are released by spreading in the first ten days of June and first ten days of September, and at least 1000 predatory mites are released to each tree averagely. Chemical control and biological control can be organicallycombined, leaf spraying is replaced by root application, the predatory mites cannot be killed by pesticides, the technology of 'using predatory mites to control pest mites' can be used while citrus pests are controlled by chemical pesticides, so that usage of the pesticides is decreased, the use frequency of the pesticides can be decreased by 7-10 times every year, control cost is reduced, and pest control efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of plant protection, and in particular relates to a method for preventing and controlling main pests such as citrus citrus psyllids, leaf miners, aphids, whiteflies, and red spiders by using root application and releasing predatory mites. Background technique [0002] Citrus pests mainly include citrus psyllids, citrus leafminers, aphids, mealybugs and spider mites, among which citrus psyllids are insect vectors that transmit citrus Huanglongbing disease, and citrus psyllids suck on diseased trees infected with Huanglongbing for 15 minutes The pathogen can be transmitted to healthy citrus trees. Citrus psyllids can reproduce one generation in 15-20 days at a suitable temperature, and can reproduce more than 10 generations throughout the year, and the generations overlap. In order to control citrus psyllids, pesticides need to be sprayed 1-2 times for each generation, and pesticides need to be sprayed through...

Claims

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Application Information

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IPC IPC(8): A01G13/00
CPCA01G13/00
Inventor 胡威张宁钟八莲卢占军徐汉虹
Owner GANNAN NORMAL UNIV
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