CN104012349A

CN104012349A - Hyphantria cunea prevention method

Info

Publication number: CN104012349A
Application number: CN201410273758.2A
Authority: CN
Inventors: 闻献
Original assignee: Nanjing Mai Side Catering Management Co Ltd
Current assignee: Nanjing Mai Side Catering Management Co Ltd
Priority date: 2014-06-19
Filing date: 2014-06-19
Publication date: 2014-09-03

Abstract

The invention discloses a hyphantria cunea prevention method. The method includes the following steps that firstly, agents formed by mixing DDVP with omethoate are sprayed every other week from May of each year and continue to be sprayed for two months; secondly, when the agents formed by mixing DDVP with omethoate are sprayed, lamplight is adopted for trapping and killing at night; thirdly, before overwintering of hyphantria cunea annually, straw is laid under trees where the hyphantria cunea inhabits, and the straw is concentrated and burned up in winter; fourthly, the previous three steps continue to be carried out for more than three years. By the adoption of the method, on average, the decline rate of the hyphantria cunea reaches aboce 95%, and the hyphantria cunea is obviously prevented.

Description

A kind of method of preventing and treating of fall webworm

Technical field

The present invention relates to ornamental plant pest control field, refer more particularly to a kind of method of preventing and treating of fall webworm.

Background technology

Fall webworm Hyphantria cunea(Drury) belong to Lepidoptera, Arctiidae, Lagoa, has another name called U.S. moths attracted by lamplight, autumn curtain caterpillar, Qiu Mue.It is the worldwide quarantine pest insect attracting worldwide attention.Main harm fruit tree, street tree and ornamental trees and shrubs, especially attach most importance to broad-leaved tree.

Fall webworm fertility is strong, diffusion is fast, every year can be to external diffusion 35 ~ 50 kms.

Fall webworm are in European 1 year 2 generation.With pupa, in cocoon, survive the winter, cocoon can be under bark and soil, flag under find.Sprout wings spring in next year, lays eggs and become piece at blade back, coated with white palea.Larva is totally 7 ages.

There are for 3 generations in general 1 year in China North China in fall webworm, with pupa, survives the winter.Annual late April, to late May, is winter generation adult emergence period, and lays eggs.Larva starts harm the first tenday period of a month in May, extends to late June always.Early July, 1st generation adult occurs then, and the adult stage is extended down to late July.2nd generation larva starts to occur mid-July, and for it endangers Sheng phase, the phenomenon that whole strain leaf is eaten up often occurs mid-August., there is generation overlap phenomenon in August, can find ovum, first instar larvae, mature larvae, pupa and adult simultaneously.Mid-August, 2nd generation adult starts to sprout wings then; The 3rd generation larva since early September harm, until mid-November; Mid-October, the 3rd generation larva pupate successively to survive the winter.Survive the winter and be continued until Second Year May pupa time.Due to the effect of weather and various natural enemies, the pupa disability rate of surviving the winter is very high, can reach 70% to 80%.

In Shandong, within 1 year, there are two complete generations.The pupa of surviving the winter started to sprout wings in late April next year.1st generation occurs more neat, and 2nd generation occurs very irregular, and generation overlap phenomenon is serious.Most of larvae pupation is survived the winter, pupate sprouting wings and then entered for the 3rd generation early of small part.In Daliang City and Qinhuangdao, occurred in general year two generations, meet the high temperature time in autumn, in the 3rd generation, also can complete growth.Tianjin, Guanzhong，Shanxi the 3rd generation generating capacity are larger, and pupation rate is also high, accounts for 30% left and right of total generating capacity.

For the U.S., mainly adopt chemical control and manual removal worm net at present, but existing medicament can not reach good control efficiency on the market, manual removal worm net is also wasted time and energy.

Summary of the invention

For solving the problems of the technologies described above, the invention provides following technical scheme:

The method of preventing and treating of fall webworm, comprises the steps:

Step 1: start to spray week about enemy's oxygenating agents from the annual May, continue two months;

Step 2: when spraying enemy's oxygenating agents, adopt light trap at night.

Step 3: before annual white moth survives the winter, lay stalk under its tree, then in the winter time stalk is concentrated and burnt.

Step 4: step 1 to step 3 continues more than 3 years.

Enemy's oxygenating agents is that 1000 times of liquid of 40% flolimat and 1000 times of liquid of 80% dichlorvos mix in the mode of 1:1.

In light trap the layout of light trap have checkerboard type, closed loop or little zigzag layout any.

Be advisable in 200～240 meters, interval between each lamp of checkerboard type layout and between two adjacent lines;

Between each lamp of closed loop layout, be advisable in 200～240 meters, interval;

Little zigzag layout is with 350 meters, interval between each lamp in bar circuit, 200 meters, interval between two lamps in adjacent two circuits, and between two adjacent lines, be advisable in 97 meters, interval.

Adopt the inventive method, the insect population decline rate average out to of fall webworm more than 95%, has obvious effect.

Embodiment

Below in conjunction with agricultural and forestry production practice, specifically set forth the implementation method of this method

The annual last ten-days period to early June, late July are to mid-August, it is the high honeybee phase of adult eclosion, this is the critical period of control fall webworm, therefore in this period, should take chemical control as main, but medicament on the market especially for fall webworm, in the present embodiment, find to adopt enemy's oxygenating agents to carry out medical treatment effect good especially.

So-called enemy's oxygenating agents is exactly that 1000 times of liquid of 40% flolimat and 1000 times of liquid of 80% dichlorvos mix in the mode of 1:1, and flolimat has good stomach toxicity function, and dichlorvos has stifling function well, and both mixing can be so that toxic effect be better.

Light trap adopts common on the market solar energy insect-trapping lamp, and the layout of trapping lamp mainly contains three kinds of methods: checkerboard type, closed loop, little zigzag layout.Checkerboard type layout is generally to use in openr place, and be advisable in 200～240 meters, interval between each lamp and between two adjacent lines; Closed loop layout endangers heavier region to prevent insect and moves outside or to need extraordinary layout for doing test mainly for certain piece, and between each lamp, be advisable in 200～240 meters, interval; Little zigzag layout is mainly used in the place that landform is longer and narrower, with 350 meters, interval between each lamp in bar circuit, and 200 meters, interval between two lamps in adjacent two circuits, between two adjacent lines, be advisable in 97 meters, interval.Generally with 100～120 meters of single lamp radiation radius, carry out accounts control area, to reach the energy-conservation object of controlling worm.Can select as the case may be different layouts.

Utilize mature larva to have along tree under trunk and find the habit of cocooing in the place of hiding, on trunk, the artificial place of cocooing that arranges, lures it to hide, and is then eliminated.Concrete operation method: the trees that find that there is fall webworm harm, at mature larva, start lower tree period, at trunk 1～1.5 meter of overhead, with the stalk bondages such as millet straw, straw, wheat straw, weeds one week, lure the lower tree mature larva of collection to pupate therein, then before pupa, take off grass burning.

Claims

1. the method for preventing and treating of fall webworm, comprises the steps:

Step 2: when spraying enemy's oxygenating agents, adopt light trap at night;

Step 3: before annual white moth survives the winter, lay stalk under its tree, then in the winter time stalk is concentrated and burnt;

Step 4: step 1 to step 3 continues more than 3 years.

2. the method for preventing and treating of a kind of fall webworm according to claim 1, the enemy's oxygenating agents described in its step 1 is that 1000 times of liquid of 40% flolimat and 1000 times of liquid of 80% dichlorvos mix in the mode of 1:1.

3. the method for preventing and treating of a kind of fall webworm according to claim 1, in the light trap described in its step 2 the layout of light trap have checkerboard type, closed loop or little zigzag layout any.

4. the method for preventing and treating of a kind of fall webworm according to claim 3, be advisable in 200～240 meters, interval between each lamp of checkerboard type layout and between two adjacent lines.

5. the method for preventing and treating of a kind of fall webworm according to claim 3, between each lamp of closed loop layout, be advisable in 200～240 meters, interval.

6. the method for preventing and treating of a kind of fall webworm according to claim 3, little zigzag layout is with 350 meters, interval between each lamp in bar circuit, 200 meters, interval between two lamps in adjacent two circuits, between two adjacent lines, be advisable in 97 meters, interval.