LY/T 3104-2019Technical regulations for control of Eucryptorrhynchus scrobiculatus (Motschulsky) and E. brandti (Harold) (English PDF)

4.1 Line inspection

According to the distribution of Ailanthus altissima in different places, the investigation route is selected, and the adult emergence period (Ningxia May ~ June) and before wintering (Ningxia September ~ (October), check the farmland forest network, the forest belt on both sides of the highway, the forest belt along the river canal, the green belt of the street and village, and the forest to investigate whether Ailanthus altissima There are phenomena such as weak growth or death, feathering pores, and flowing glue.

4.2 Standard Survey

4.2.1 Setting Standard Ground

In the groove orbital and Ailanthus odorata orbital occurrence area, a standard plot of land is set for every 6.67 hm2 forest or 33.33 hm2 farmland forest network;

Set a standard land every 1000 m to 2000 m in the forest belt on both sides of the road, the forest belt along the river canal, the street and the village green belt. Standard land There should be no less than.200 strains of Ailanthus altissima.

4.2.2 Investigation methods

In the forest, single or double diagonal lines or "Z" -shaped trees were used to randomly sample 30 samples of trees.

One plant was selected every 5 to 10 plants, and 30 tree-like trees were selected for investigation. Key statistics. sulcus orbitalis and sulcus on tree trunk and base of tree trunk Number of adult orbital elephants; if necessary, anatomy of trunk and tree roots was performed to count the number of larvae of orbital elephants and Ailanthus odoratum. Fill the survey results into the "ditch Standard Survey Records and Statistical Tables of Orbital Elephant and Ailanthus odorata Orbital Elephant ". For related tables, see Appendix B.

4.3 Monitoring of skirt capture devices

For monitoring methods, see Appendix C.

4.4 Occurrence and Disaster Criteria

4.4.1 Degree of occurrence

According to the rate of worms, the occurrence degree of the orbital sulcus and Ailanthus odoratum was divided into three levels. light, medium and heavy. See Table 1 for the grading standards.

Table 1 Criterion of occurrence of orbital sulcus or Ailanthus odorata

Statistical unit

Degree of occurrence Light to heavy Insect strain rate /% < 5 >=5 ~ <=30> 30

4.4.2 Disaster Criteria

Insect strain rate is over 30%.

5.1 Quarantine measures

Do a good job of the daily investigation and prevention of Ailanthus altissima seedling breeding bases, destroy the seedlings in a timely manner, and it is strictly forbidden to bring the seedlings out of the nursery. Strictly adjusted Check the cadres and roots of seedlings with a DBH greater than 5 cm, and find the seedlings with insects, destroy them in time, and transport them after confirming that they pass.

5.2 Forestation measures

5.2.1 Creating mixed forests

When planting, plan to create mixed forests with multiple tree species, avoid creating pure Ailanthus altissima forests, or transform and replant existing pure Ailanthus altissima forests to form mixed forests.

For specific technologies, refer to the regulations of GB/T 15776 and GB/T 15782.

5.2.2 Clearing dead trees

Unified in late autumn and early winter. Before the cleanup, investigators investigate the damage in detail, mark dead wood, and uniformly harvest. Post harvest Harm wood should be piled away from Ailanthus altissima forest land, and measures such as smashing or incineration or fumigation should be taken in time to eliminate the harm.

5.3 Physical prevention

5.3.1 Skirt capture device capture

In the adult emergence period (May to October), the trunk-bundled skirt-type capture device was used to block and capture the ditch orbital elephant and Ailanthus ditch orbital elephant.

See Appendix D for the operation method.

5.3.2 Manual capture

At the peak of adult worms (May-July), the grooving orbiting elephants and Ailanthus groping were captured artificially around the base of the trunk and on the trunk.

5.4 Attractant control

Adult emergence period (May-October), a large number of adult ditch orbital elephants are trapped by food source attractants. For the density and method of trap setting, see Appendix D.

5.5 Biological control

In the forests and some sheltered forests where the insect density is not high and is less affected by human factors, artificial bird hangings are used to protect and attract woodpecker. For bird nest making and hanging technology, please refer to LY/T 1961 Appendix F.

5.6 Pharmaceutical Control

At the peak of adult worms (May to July), spray 1600 times of 2% thiacloprid microcapsule suspension on the trunk and branches. Prevention work when implementing GB 12475 and LY/T 2648.

6.1 Inspection contents

Check whether there are fresh glue spots on the stem of Ailanthus altissima, and use the change in the rate of insects and the density of insects before and after the control to indicate the control effect.

6.2 Inspection method

Before the control, a standard field survey is set up to count the plant rate and population density. After control, 30 standard strains were randomly selected in the standard plot for adjustment.

Check and survey statistics include insect strain rate and insect population density. The setting and investigation of the standard ground are the same as 4.2.1 and 4.2.2.

6.3 Prevention effect calculation

For the calculation formula, see Appendix D of LY/T 2108.

Appendix A

(Informative appendix) Biological characteristics and hazard symptoms of sulcus orbitalis A.1 Distribution and hazards of orbital sulci Grooved orbital Eucryptorrhynchus scrobiculatus (Motschulsky) and Ailanthus furrowed orbital E.brandti (Harold) belong to Coleoptera Eucryptorrhynchus belongs to the genus Eucryptorrhynchus. It is a drill borer that specifically endangers Ailanthus altissima (Mill.) Swingle.

Often mixing occurs. The larvae have different damage sites, the former eats the roots and the latter eats the cadres. Adults harm the above-ground part of Ailanthus altissima, with Obvious tree habit. Groove orbits are distributed in China in Liaoning, Inner Mongolia, Beijing, Tianjin, Hebei, Shanxi, Shandong, Henan, Shaanxi, 21 provinces (cities, autonomous regions) including Ningxia, Gansu, Qinghai, Xinjiang, Jiangsu, Shanghai, Anhui, Zhejiang, Hubei, Hunan, Fujian and Sichuan, no distribution has been reported abroad. Ailanthus odorata orbital elephant is distributed in Heilongjiang, Jilin, Liaoning, Inner Mongolia, Beijing, Tianjin, Hebei, Shanxi, Shandong, Henan, Shaanxi, Ningxia, Gansu, Qinghai, Xinjiang, Jiangsu, Shanghai, Anhui, Hubei, Hunan, and Sichuan, etc.

(Administrative Zone), foreign countries are mainly distributed in North Korea, Japan and the Far East.

A.2 Biological characteristics of orbital sulcus Groove orbital occurred in Beijing, Ningxia Hui Autonomous Region and other areas for one generation per year, the egg period was 7 d to 10 d, the larvae were 6th instar, and the duration was 60 d to 75 d.

The larvae eat the root of Ailanthus altissima to supplement the nutrition, which causes the tree to weaken, which attracts the Ailanthus odoratum orbital elephant to further harm and cause the tree to die. each the pupae turned into pupae in the two periods of late April to May and late July to early August. The pupae emerged as adults after 10 d to 14 d. Every October Adults or larvae overwinter in the soil at the bottom, and emerged in late April of the following year to endanger the Ailanthus altissima. There are two peak periods of emergence in a year, which are 5 Late month to late June and late July to late August.

The Ailanthus altissima orbital occurred in Xingping, Shaanxi, Fuyang, Anhui, Tai'an, Shandong, Laizhou, Shandong, Yinchuan, Ningxia and other places.

It is neat, the egg stage is about 8 d, the larva is 7th instar, and the larvae eat the Ailanthus altissima to supplement the nutrition.

At the end of October each year, the adults overwinter in the weeds around the base of the trunk, the litter and the soil surface at a depth of 1 cm to 2 cm, or the larvae in the trunk bast Winter between the middle and xylem. Overwintering larvae began feeding on Ailanthus altissima from late March to early April, and overwintering larvae began to pupate in early May.

The pupation stage was extremely irregular, with 10 to 16 d pupation stage. Adults emerged from May to September, and the emergence period was in July. The adult emerged after mating and mated at 8 Oviposition begins in the month, and wintering adults begin their activities from late March to mid-April, and late April to mid-May is the period of adult larvae.

A.3 Morphological characteristics of the orbital sulcus

Table A.1 Comparison of Morphological Characteristics and Hazardous Characteristics of Groove Orbital

Orthoptera sinensis

Adult

Female body length 16.239 mm ± 1.04 mm, body width 8.419 mm ± 0.071 mm; male body length 16.153 mm ± 0.86 mm, body width 8.305 mm ± 0.56 mm. Base of forearm, base of elytra and end of elytra 1/3 it is densely covered with milky white and ocher scales, and the scales are slender (Figure A.1). Feed the young shoots of Ailanthi the bar died.

Female body length 12.83 mm ± 3.41 mm, body width 4.51 mm ± 0.12 mm; male body length 9.68 mm ± 0.26 mm, body width 3.91 mm ± 0.11 mm. Full chest, shoulders and ends of elytra 1/4 White scales, mixed with a small amount of ochre scales, scale-like leaves (Figure A.2).

Feed on the trunk and young shoots of Ailanthus altissima. serious Causes the branches to die.

The length of the iliac crest is about 18 mm ~ 22 mm, yellowish white, and the end of the abdomen is slightly curved.

The beak is longer than the fore-breast and the base is 2/3 bristly (Figure A.1).

The iliac crest is about 14 mm to 15 mm in length, and its shape is similar to that of the sulcus orbital (Figure A.2).

larva

The larva is curved like a "C". Body ossification is weak, sparse hair set, hair, the chest and back are yellow-brown, and the belly is milky white.

A.1). Drill collar damages the root of Ailanthus altissima, resin is secreted from the affected area, and adhesion the soil near the roots forms a hard clay complex.

The morphology is similar to that of the sulcus orbital (Figure A.2).

The yellow worm droppings were discharged from the affected area, accompanied by the flow of Ailanthus altissima.

The egg is oblong, about 1.683 mm long and 0.883 mm wide. Length and width the ratio is approximately 2. 1 (Figure A.1).

The eggs are nearly round, about 1 mm long and 0.8 mm wide. Aspect ratio it is 5. 4 (Figure A.2).

Figure A.1 Morphological characteristics of four developmental insects

Figure A.2 Morphological characteristics of four developmental worms in Ailanthus odoratum

Table A.2 Comparison of the habit of the orbital sulcus and Ailanthus odorata

Sulcus orbitalis

Loose and moist topsoil near Ailanthus trunk at spawning site. Inside the tree bark of Ailanthus.

Larvae

The root of Ailanthus altissima, the phloem from the early stage of larvae, about 2nd to 3rd instar Age began to feed on xylem.

Ailanthus trunk phloem and xylem.

Chemical site

Most of them are made in the soil near the root of Ailanthus altissima.

Necrotic roots pupate.

The xylem of Ailanthus altissima tree trunk is made into a chamber, and the tree trunk is vertical to the tree trunk.

Cut face with head up.

Adults feed on newly budded leaf buds, young petioles, branches, and phloem of the trunk.

When a pseudo-dead adult is shaken or disturbed, the antennae and beak are quickly retracted and closed, and the foot is contracted into a pseudo-death.

Appendix B

(Informative appendix) Orthographic survey records and statistical tables Survey location. County (district) township (town) Changcun; forest age;

Check the reported worm strain rate (%); standard land number;

Whether other pests occur and are described simultaneously during the year under investigation;

Table B.1 Standard survey records and statistical table

Standard tree number with worm count (head) Number of surveyed plants Insect strains Insect strain rate Insect density Light to moderate Investigator. Date of Investigation. Date CC Appendix C (Informative appendix) Capture monitoring method of skirt-type capture device C.1 Set time Before the emergence of adults (late April).

C.2 Setting the density A trapping point is set for every 0.1 hm2 of forest in a checkerboard pattern; a trapping point is set for every 500 m in farmland forest nets and other forest belts.

Column. One pitch is set at 10 m.

C.3 Setting method

The long side of the skirt-type capture device with an elastic band is fastened and fixed around the chest diameter of the standard plant, and the connection at the side is formed by sticking Skirt nets, pulling the skirt nets into a fluffy shape to keep them from sagging naturally, to prevent and capture the grooving orbiting adults in the process of climbing trees. Timed check 1 every 7 d the number of adults captured on the secondary skirt capture device. Fill in the form C.1.

Table C.1 Statistics of adult occurrence of orbital elephantiae

Survey location. County (district) township (town) Changcun Date trapping point Skip-type capture device capture number (head) temperature (° C) Remarks 1 2 3 4 Total Investigator. Date of Investigation. Date DD Appendix D (Informative appendix) the main prevention and control technology of orbital elephantia D.1 Preventive capture technology D.1.1 Application of skirt capture device D.1.1.1 Set time the adult emergence period of the orbital elephants and Ailanthus odoratum (May to October).

D.1.1.2 Setting the density Set per plant.

D.1.1.3 Setting method First, attach the long side of the skirt-type capture device with elastic bands around the chest diameter of the trunk, and then use a hook and loop to attach the side connection.

Combine to form a skirt net, and pull the skirt net into a fluffy shape to keep it sagging naturally. Skirt-type capture devices are recommended to be replaced every January to February. Skirt the forest application of the capture device is shown in Figure D.1. See Figure D.2 for the skirt capture device material.

Note.

1--elastic tie;

2--Insect nets;

3--Sticky.

Figure D.1. Forest application with skirt capture device

Note.

1--elastic tie;

2--Insect nets.

Figure D.2 Skirt capture device

D.2 Food source attractant trapping technology D.2.1 Set time the adult emergence period of the orbital elephants and Ailanthus odoratum (May to October).

D.2.2 Setting the density A trap is set every 5 m to 10 m.

D.2.3 Setting method Place the food source attractant in an 80 ml slow-release vial, and then hang the slow-release vial in the trap trap (see Figure D.3). Stinky Dig a ground pit with the same height as the trap body in the ground within 30 cm of the base of the trunk.

The lower end of the insect mouth) is flush with the soil surface, so that the inlet of the insect is exposed to the surface. Unscrewing the lid of the slow-release vial can trap the adult ditch orbital elephant.

Change it once. The structure of the trap trap is shown in Figure D.4.

Figure D.3. Trap traps in forest applications

Note.

1--Top cover;

2--Induced core;

3--funnel;

4--Insect collecting bucket.

Figure D.4 Trap trap