| The Lithocolletis ringoniella Mats of apple that Slipping into the leaf is one of the pests that becomes harmful mainly of Shaanxi and even producing region of national. When this worm endangers seriously, can cause blade and fruit of the tree to come off early, and the output of apples to drop seriously.All the time, Lithocolletis ringoniella Mats of apple is a kind of less important pest in history. In the 1990s of last century, because used the chemical agriculture chemical on a large scale , hurt the ecological balance of damage and benefit; Adjustment of the pattern of farming and the advancing by leaps and bounds of the area of apple, have offered the ecological environment of suitable sending and advocating peace for this worm,abundant the food resource space ; The rising year by year of the temperature of producing region of the apple, survive the winter and bring the great advantage for the growth and security of this worm. In this way , lead to the fact the Lithocolletis ringoniella Mats happens year after year in such apple main producing regions as Shaanxi , Shanxi , Shandong ,etc, can't repeatly manage , become one of the main populations of pest that pays attention to and prevents and cures every year.This research is to aim at the new ecological environment conditions , Shaanxi apple orchard Lithocolletis ringoniella Mate'seasonal prevalence regularity, Formulation the practical and science monitoring technical specification ,to do well Lithocolletis ringoniella Mats ' long to short Predict and forecast for apple orchard, summarize the integrated control measure of exploring rational science.The result is as follows:J .Lithocolletis ringoniella Mats has seasonal prevalence regularity.Lithocolletis ringoniella Mats occur 5 generations in a year, the overwintering generation's first-seen from the first ten days of March to the last ten days of April.2.The overwintering generation's population density has relation to the next year first generation larva's prevalence and damage.The Lithocolletis ringoniella Mats overwintering generation's density higher, the next year first generation larva's damage larger. It's right in the contracy.3.The rainfall of March and April has close relation to the overwintering generationadult's first-seen.The rainfall's more or less, earlier or later has relation to the overwintering generation adult's first-seen, the year that rainfall comes early and adequate(over 10mms), Lithocolletis ringoniella Mats overwintering generation adult's first-seen earlier, otherwise late.4. The winter average temperature's fluctuant has close relation to the pest prevalence early or late in the next year.December in the winter and January and February in early spring's average temperature much high, the Lithocolletis ringoniella Mats overwintering generation adult's first-seen earlier.otherwise late.5.The rainfall has remarkable influence on the Lithocolletis ringoniella Mats adult's happen peak.By use sex attractant to lure and survey, to define that the adult have 3-4 peak periods to happen one year.when the rainfall over 10mms.it will be a happen peak in 5 to 10 days, a lay eggs peak in 7 to 12days, this is the key period to control.6. The Lithocolletis ringoniella Mats sex attractant can be regarded as the effective tool which control this worm.Result of the research prove Lithocolletis ringoniella Mats sex attravtant to lure and kill adult is very obvious, can be used for control in production practices.7.It is not very ideal by use the light trap to lure and kill Lithocolletis ringoniella Mats.use the light trap to lure and kill Lithocolletis ringoniella Mats is not very ideal,trapping and kill more obvious to natural enemy at the same time , it become a difficult problem of protecting the natural enemy in practical application, need studying the further way to avoid the natural enemy's injury.8.Research has put forward the monitor technical specification Lithocolletis ringoniella Mats of apple orchard of Shaanxi.On the basis of summarizing foreresearchers' experience .combine the result of research , put forward Lithocolletis ringoniella Mats of apple's monitor technical specification tentatively (the enclosure ), and try application in every apple mainly produce e county of Shaanxi, obtain the comparatively ideal result. |
