The trunk packing method is a new method for controlling fruit tree aphids that has been popularized and used in recent years. This method not only applies to orchards, but also has a more promotional value for garden fruit trees. Also suitable for controlling wood aphids. The use of tree trunk package method to control aphids, generally effective after 3 days, the control effect on the 5th day can be as high as 100%, 100 days of control efficiency can still be maintained at about 85%. The specific method is: 1. Select the site. In the base of the main stem or main branch of the fruit tree 20-30 cm above the ground, a smooth strip with a width of about 15 cm (the rough skin of the trunk can be scraped off) is selected as the drug-containing part. 2, the drug site. First, wrap a piece of absorbent material on the selected part (old cotton, toilet paper, used newspapers, etc.), then dilute 3-5 times of 50% methamidophos or 40% omethoate into the system. , Note or coated on the absorbent about 20 ml, and then tie it with a plastic film. 3, remove the dressing. The plastic film is released after 5-6 days after the liquid appears; the absorbent is removed before the rain to prevent the dressing from rot.
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