| In this paper,from two aspects of field investigation and indoor breeding in yining area of c orn borer occurrence regularity and characteristics of field to do the research of the system.Mainly do the following several aspects:The field corn borer wintering base of the investigation,The occu rrence rules of adult,The field corn borer eggs and egg mass distribution,The first generation of corn borer larvae damage maize plants Indoor raised corn borer larvae feather and statistics and d eaths.In this paper,the corn borer imagoes and larvae occurred in the field of the law of in-depth analysis,Yining area for prediction of the corn borer and pesticide reduction provides the scientifi c basis for the prevention and control of pests.main results are as follows:1.In April 2015,134 strains of corn base of overwintering larvae yining county,in September 2014 the corn plant base of overwintering larvae is 421.Resistance to corn borer in different variet ies of maize plants.Ili region overwintering generation of corn borer adult from May 13 has been able to trap by means of sexual lures to a large number of adult.Wide range of ili region overw intering generation of corn borer adult activitiesStrong ability to fly,Different distance from the ce ntral feather point spatial distribution of the number of corn borer adult there is no regularity.The Corn bore of overwintered generations of adult time from may to the end of June,The peak at a bout on May 31,Time is longer,Adult quantity change and temperature change trend is the same,E ach cooling can result in adult number has reduced the next day,And rise when the temperature af ter the adult population as the temperature rises slowly back,Under the condition of constant temp erature rain and strong winds can cause adult quantity significantly reduced.Ili region of the corn borer is happening already by the European corn borer to Asian corn borer area changes of asia-e urope mixed zone.With plastic bell shell corn borer traps without plastic bell housing and adult tr ap in the trapping effect of corn borer 1 adults will have significant differences,In the overwintere d generations and the second generation of the corn borer adult trap,The effect of the two,Yining area were three generations of the corn borer,The first generation of adults is far greater than the number of overwintered generations and second generation adult,The second generation of corn b orer adult will spawn in the field,The few reports,2rd generation adults eggs blocks by temperatu re and the surrounding environment can not be normal hatch,Egg masses usually black death.2.Overwintering eggs of the corn borer from May 28-June 18,Not found the egg mass on t he weeds.Corn plants grow to a height of about 60 cm,Beginning in the field cornfield found eg g masses.Generation corn borer egg masses within the height range of 40cm-113 cm,Most egg mas ses at the height of 40-60 cm,Most are located on the blade and 3,4,5.Most of the veins in the mi ddle.Egg masses height and plant height there is no correlation.From field corn borer larvae grow into pupa stage from June 3-July 5,Pupae to adult time for the July 5-July 14,Field found lar vae of corn plant leaves time June 12 to July 4.Corn plants are corn borer moth larvae of time i s June 19 to July 13.3.Providing water can greatly increase the lift corn borer larvae diapause chance after pupatio n,Provide adequate food can be improved after the lifting of the state of diapause corn borer surv ival,Diapause larvae either before or after winter,Placed in indoor artificial climate chamber feeding At a temperature of 26 degrees Celsius.70% relative humidity.photoperiod of 16L: 8D condition s under,Two kinds of diapause larvae to the emergence of the time within a range of about 30-60 days,After wintering larvae and not because after a long winter caused by prolonged diapause.larvae mortality kept indoors before winter diapause larvae than after winter.Around September 2015 No.1,larval weight and body length is no longer growing,maintaining a stable state. |
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