| At present, pollution-free products has become the basic requirements of the internationaltrade in agricultural and sideline products. But in our country, the main method ofprevention and controlling of grapholitha molesta busck is still spraying chemical reagentsand fruit bagging. Long-term, large, blind use of chemical pesticides produce the problemsof environmental pollution, drug resistance and fruit pesticide residues. Therefore, to studyand found the new pollution-free method of prevention and cure is very important.This article was based on pests non-harmful prevention and cure to grapholitha molestabusck, by using different kinds of traps combined with sex lure, captured insects in field.Using statistical methods to analyze the number of grapholitha molesta busck and otherinsects, in order to select the desired carrier of sex lures. So as to provide the basis forpollution-free control by using insect sex lures. At the same time, this paper researched theimproving of fruit bagging technology, to make the bagging technology improve fruitquality while helping to prevent grapholitha molesta busck. Mostly research result is asfollows:1. The result of the different traps on the adult of grapholitha molesta busck are that thearmyworm plate and water basin has the highest cumulative trapping rate, compared withinsect traps sold on the market. The armyworm plate of different color had not significantdifference. But the amount of grapholitha molesta busck trapped by yellow armywormplate is the most, trapped by white armyworm plate is the lowest, compared with yellowarmyworm plate and blue armyworm plate.2. The result of trapping to grapholitha molesta busck adult, using armyworm plate ofdifferent area was that although the area of armyworm plate was different, the differencebetween amounts of trap in per unit area were not significant, indicated that the area ofarmyworm plate has no effect on the trapping amount per unit area.3. The distribution of grapholitha molesta busck in the armyworm plate is that to lure asthe central objective, within0.16m2range, there was no significant difference between thenumber of different intervals of insect distribution.4. Armyworm plate traps non-target insects to trap results as follows: yellow armywormboard to trap of non-target insects diversity and quality is higher than other colors. Maincoleopterous beetles, give priority to with turtle grain beetles; wing membrane purposeichneumon; purpose pulse wing lacewing flies; with wings to fulfillment of grass pest,leafhoppers, aphids; bugs half goles; wings to fly, mosquito, etc. There was no significant difference in the effect of trapping to the non-target insects,whether trap suspended on the sex lure core of grapholitha molesta busck. But the color ofarmyworm plate had effect on trapping effect of non-target insects. Trapping quantity ofyellow was armyworm plate significantly higher than other colors, the average trappingquantity of each trap was as many as60, the amount of trapping to ladybird using bluearmyworm plate was significantly fewer than other colors.5. The study of control effect for fruit bags with different material to grapholitha molestabusck shows that:transparent membrane bags have influence on the growth traits in theprocess of fruit and decrease the fruit weight and the hardness obviously. Mesh bag haveno influence on the growth traits of fruit,but fruit decay rate declined obviously. Singlelayer mesh bag is better than that of double mesh bag.6.The prevention of modified fruit bag (double bag, lining punch) for grapholitha molestabusck shows that:the elements of no sacking, ordinary double-layer bag (yellow in black),paper bag1+0.2cm (membrane bag hole) membrane bags, paper+2(membrane bags setaperture0.3cm), paper bag3+(membrane bags set aperture0.4cm) for fruit weight, fruitshape index and hardness have no significant difference between soluble solids, but thepaper+film bag greatly reduces the rate of fruit decay. |
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