Flowering, fruiting and pest control of pear trees

First, thinning flowers, fixed fruit in mid-May, thinning flowers, set fruit, conditional can be bagged. Before bagging, in order to prevent some pests and germs from being trapped in the bag, it is necessary to spray high-efficiency insecticidal and fungicides such as yellow meal, pear leaf rust, pear black star disease.

Second, pest control (a) drug prevention and treatment. Using 25% of the chlorpyrifos 3, 2000 times solution or sweet and sour vinegar, the effect of trapping the pests such as the small heartworm is obvious. The sugar solution is 1 part brown sugar, 4 parts vinegar, 1 part wine, 16 parts water, plus a few drops of 1% mercury or formalin solution. The prepared sweet and sour liquid is placed in a wide-mouth container and hung on a tree 1.5 meters high from the ground, and one for every 5 to 10 plants. (2) Artificial killing. In the early morning or evening, a plastic film is placed on the ground to shake the trunk for hunting. When there is a cow dung on the trunk, the wire hook can be used to kill the larvae of the beetle in the trunk.

Third, the prevention and treatment of black spot disease From May 20th, every other 15 days sprayed a multiple amount of Bordeaux mixture, and alternately with the antibacterial or myclobutanil.
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