The use of sexual attractants to predict, predict and control pests can solve the problem of predicting and predicting non-phototropic pests and reducing the number of chemical pesticides used in production. Effective protection and utilization of natural enemies is a good measure for producing pollution-free fruits. From 2004 to 2006, we applied the research on the detection and prevention of two pests on the apples with the application of the peach heartworm core and the gold-grain moth-like lure, and achieved good results. It is summarized as follows:
1. The method of placing the core is to take a 20 cm water basin. Use a thin wire slightly longer than the diameter of the basin to traverse a core to the center of the basin and fix it so that the lower edge of the lure and the mouth of the basin Qiping, to prevent soaking the core due to the overflow of the rainwater basin. After doing this, the trap will be hung in the fruit trees. Suspension method, first, the height of the suspension is about 1.5 meters from the ground. This method is easy to hang, but when the wind is big, the basin is shaken, it is easy to shake the water out of the basin, it is not easy to maintain the height of the water in the basin and affect the trapping effect. . The second is to put a triangular bracket and place the basin on the bracket. This method can keep the water stable and is not affected by the strong wind. After placing the basin, add water to the basin and add 0.2% detergent to the water. The amount of water added is 1-1.5 cm from the lower edge of the lure core.
Second, the placement density of the core is arranged according to the purpose of use, orchard topography, fruit density, etc. For the purpose of measuring reports, it shall be carried out in accordance with the requirements of the measurement report. For example, the Shandong Provincial Local Standard DB37/T364-2003 "Golden Moths Moth Surveying Survey Specification" and DB37/T363-2003 "Peach Small Heartworm Forecasting Survey Specification" require the use of diagonal five-point sampling method to set 5 pots, the pots are 50 meters apart. . For the purpose of controlling pests, the placement density should be larger. Generally, 1 pot should be placed at intervals of 20-25 meters; the hilly areas where the terrain is uneven or the density of fruit trees should be dense, and the orchards should be placed densely. Otherwise, the flat land is flat. Or the orchard with a lower density of fruit trees can be placed farther apart.
Third, the placement time of the lure core for the purpose of measuring the report, should be placed before the beginning of the wintering era of the lure object. In Laizhou, Shandong, the placement time of the gold-grain moths should start on March 21 and end in late October; the placement time of the peach-shaped heartworm should start on May 21 and stop in late September. For the purpose of controlling the object of decoy, the time of placement may be determined according to the age of the different decoy objects and the degree of damage. For example, the main generations of the golden moths are the 3rd and 4th generation larvae, and the observation data of the two generations in 2004-2006 are reported. The first and third generations of the golden moth are from the early July to the beginning of September. In the period, moths accounted for about 80% of the annual amount, which is the main period of use of the core. The peach worms occur in 2 generations a year. The annual occurrence of adult winter worms varies greatly. The general year starts in mid-June, and the 7 and 8 months are the main occurrence periods of the wintering and first-generation adults. The main period.
Fourth, the management and investigation of the traps should be checked once a day, remove the worms in the basin, and replenish the water in the basin. For the purpose of measuring the report, the worms to be harvested should be classified and recorded. The lure core should be replaced after a period of use, and it can be replaced once a month or so.
V. Problems that should be paid attention to during use (1) The use of artificial attracting cores can reduce the number of chemical pesticides used, but it cannot be completely dependent on the core, and should be combined with chemical control. For example, when using a peach-shaped heartworm-like wick, it can be combined with the agent once in the field at the beginning of the moth.
(2) The use of sex lures for trapping and reporting should be combined with the investigation of the occurrence of pests in the field to determine whether chemical control and prevention time are needed.
(3) The use of artificial lure to prevent damage to beneficial insects. For example, the golden moth-like lure has a strong trapping effect on the wall bee, so the flowering period of the fruit tree should not be used. For the purpose of measuring the report, it is not appropriate to stock wall bees and bees during the flowering period of the orchard and adjacent orchard fruit trees.
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