The use of sex attractants to forecast and control pests can solve the problem of forecasting and forecasting of non-phototaxis pests and reducing the number of chemical pesticides used in production. Effective protection and use of natural enemies is a good measure for the production of pollution-free fruits. From 2004 to 2006, we applied the research on the application and monitoring of the two insect pests in the apples on the apple with the application of the peach borer scent and the gold moth lure wick, and achieved good results. The summary is as follows:
First, the placement method of lure
Take a caliber 20 cm basin, use a thin wire slightly longer than the diameter of the basin to cross a lure centered on the top of the basin and fix it so that the lower edge of the lure is flush with the surface of the basin to prevent rainfall. The basin is full of water and soaks the wick. After doing a good job, it will be suspended in fruit trees. Suspension method, first, the height of the suspension to attract the core from the ground is about 1.5 meters is appropriate, this method is easy to hang, but the wind when the basin is shaking, easy to shake the water out of the basin, not easy to maintain the water level in the basin and affect the trapping effect . The second is to put a triangular support and put the pot on the support. This method can keep the water stable and free from strong winds. After placing the basin, add fresh water to the basin and add 0.2% detergent to the water. The amount of water added is 1 to 1.5 cm from the lower edge of the lure.
Second, the placement density of lure
According to the purpose of use, orchard topography, fruit tree density, etc., arrange the placement density of the lure. For the purposes of forecasting, it should be conducted in accordance with the requirements of the forecasting report. For example, Shandong Provincial Local Standard DB37/T364-2003 “Code for Surveying and Mapping Survey of Gold-winged Silkworm†and DB37/T363-2003 “Special Survey for Survey of Peach Fruiting Moth†require the use of a diagonal five-point sampling method to set 5 pots, basins 50 meters apart. . For the purpose of pest control, the placement density should be larger, usually a 20-25 meter interval to place a pot; uneven hilly terrain or fruit trees dense, densely planted orchards should be more dense, on the contrary, a flat terrain Or an orchard with a smaller density of fruit trees can be placed at an appropriate interval.
Third, the lure of the placement time
For the purpose of forecasting, it should be placed before the beginning of the wintering of the induced object. In Laizhou, Shandong, the placement time of the golden moth lure should begin on March 21 and end in late October. The placement time of the peach borer should begin on May 21 and end in late September. For the purpose of preventing and killing the object, the time for placement may be determined according to different generations of harmed and killed objects in the field and the degree of damage. For example, the major generations of the golden-lined moth are the third and fourth-generation larvae. The observation data were reported from 2004 to 2006. From early July to early September, the second and third generations of adult moths were distributed. During the period, the amount of moths accounted for about 80% of the annual occurrence. At this time, it was the main period for the use of lures. Peach borer bores two generations a year. The annual occurrence period of overwintering adults differs greatly. Generally, the year begins in the middle and early June, and in July and August, it is the main occurrence period of the overwintering and adult generation, and it is also controlled by lures. The main period.
Fourth, induction basin management and investigation
Traps should be inspected once a day, remove the insects in the basin, and supplement the consumption of water in the basin. For the measurement, the recorded insects should be classified and recorded. The lure is to be replaced after a period of use, and it can be changed once a month or so.
V. Problems to be Noted in Use
(1) Use of the pull to control pests can reduce the number of chemical pesticides used, but can not completely depend on the lure, and should be combined with chemical control. Such as the use of peach small heartworm enticement of the core, in the moth peak field when the first egg to see when combined with chemical control 1. (2) The trapping and forecasting with the use of a lure is to be combined with the investigation of the occurrence of pests in the field to determine whether it is necessary to control and control the time for pesticides. (3) The use of sexual lures must prevent damage to beneficial insects. For example, the gold-grained moth larvae have a strong trapping effect on wall bees, so the flowering period of fruit trees should not be used. When used for forecasting, it is not appropriate to stock wall bees and bees during the flowering period of the observation garden and the adjacent orchard fruit trees.
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