Studies On The Biology And Control Of Sinopticula Sinica Yang

Sinopticula sinica yang belonging to a kind of sinica Yang with scale wings, was authenticated as a new kind in 1989.The insect which was discovered in shanxi at first endanger the LI3 ZHU3 's plant such as maple leaf in 1984. In 1994 the writer found that it can cause bad effort to the apricot's branches and this trend is aggravated year by year.This text has studied not only the life history of the Sinopticula sinica Yang, the age period of appearance characteristic,and biology characteristic together with their endanger characteristic, but also investigated the distribute regulation which is different with the elevation and the space of its distribute category etc.Finally this text has done some initial research on the prevention technique aiming at the control technique of the old and young insects during the cocoon period as well as the agrochemical to reply about the tree trunk injection technique integrated insect machine at the young insect period.The main results are as follows:Through the observation of combined indoors and outdoors in 2004-2005, the appearance characteristic of Sinopticula sinica Yang was descriped in detail,and the length of the insects'body and wing was measured.The unique character of the insects contains several aspects, such as lacking of the single vein in fore wings as their main character ,having 38 sections at the antenn and black scale hair at the stanza with its black and brown alternate colors,carrying a gradually thinner department with 3-4 sections.While the main character of young insects is as follows:They are divided into four period and 11 sections, regarding footless as the typical model character.The part of each stanza in the solicit foot is convexed in the shape of nipple,having no toe to divide.They also have 3-5 toed unobvious convex at the edge,owing a bigger convex in the center, and the rest smaller convex is arranged arround the sides in a wreath form.At the convexed edge in the central it has a very long cilia ,which is considered as the main organ.The occurrence regulation of Sinopticula sinica Yang in the region of Changli Hebei : Sinopticula sinica Yang occur one generation a year in the region of Changli Hebei, the grown infant worms hide in the little insects through the winter, and begin to come out in the last ten days of March next spring(from March 16th to March 19th), and cocoon to make chrysalises(from April 28th to May 4th is the chrysalis period), the grown worms become insects in the last ten days of June(from 11th June to23th June ), and they make baby eggs in the central part of new branches ,young worms start to hatch from these eggs in the first or second ten days of July (from 2th July to 14th July ), the infant worms drill into and destroy new branches, they produce a lot of little insects, badly influent the growing of new branches and the top of the tree, and then influent the production and quality of the apricots.The research on the distribution type of Sinopticula sinica Yang is: the distribution of the destructive little insects of Sinopticula sinica Yang in the tree body belongs to general negative two itemseses distribution type of gathering distribution type, in the east, south, west, north, inside, up, middle, all different directions and layers ,the distribution of the little insects Sinopticula sinica Yang make appears to be gathering distribution type. The degree of influence which Sinopticula sinica Yang make in apricot is influented apparently by evolution factor, it is fit for the destroy of Sinopticula sinica Yang when the evolution height is about 100, the degree of destroy falls with the raise or falling of the evolution height. It found that ormyrus punctiger westwood is the only enemy of Sinopticula sinica Yang when doing researches of ecosystem environment of Sinopticula sinica Yang, which can make further research on.Sinopticula sinica Yang mainly endager the apricot's growth of one,two, or three years.At the prosperous fruit period ,the endanger in trees results in bad lost, which is shown on the trees of one year.During the one year trees the medium and long fruit branches are victimized most serious.After that the branches are influenced on the growth of becoming stong ,while causes the obvious decline on the length and thickness of leaves and the fruit rate of MAI HUANG decreased from 5.8% to 1.9%.In the medicine prevention and cure experiment , 45% crystal sulphur matching with 100 liquids and 99.1% enemy-die butter matching with 100 liquids can be used as the unharmful product,the defending effect of which can respectively reach to 97.18% with 94.37%.When making use of the injected method prevention of the tree trunk to cure the sinopticula sinica yang young insects, the best processing result has been shown on Confider SL with 500 liquids and the result to kill the insects can reach to 100% after the injected 15 days .In contrast, the prevention aimed at killing sinopticula sinica yang is lower with 40% anti- chlorine cyanotype butter and 20% Sumicidin than Confider SL.However,the former is proved better in the application.The three agrochemical all have low poison and low remain characteristics,so they can be carryed to a extensive expansion in actual produce prevention.Using of a withdrawed liquid of DDV and Pyrethrin to carry on a consociation poison dint measurement experiment on sinopticula sinica yang indicate that when the withdrawed liquid is mixed with the pro rata 1:3 , the average death rate of the sinopticula sinica yang will be the tallest and the defending effect can reach to 90%.The time to kill the sinopticula sinica yang using the black lighting should be started at the first ten days in June .At the middle ten days in June their feathers will attain to a fairy prosperous period,however,they will be gradually reduced after that. In the almond park,it should be designed with the chessboard type to kill sinopticula sinica yang in a way of frequent flapping and to install in actual big area application.In other words,the chessboard type design could assure the valid control scope under 100M to kill sinopticula sinica yang.The black lighting can not only kill a great deal of sinopticula sinica yang insect directly and lower the cardinal insects number in that year ,but can also estimate their occurrence period that provide a accurate basic theory to make sure the cure method period.