In recent years, the damage caused by the three pests of P. edulis (Pear-like tiger) and P. zhenzhiensis has been increasing year by year. With a little carelessness, the whole garden will not be harvested. Its control technology: 1. Strengthen agricultural control and reduce the source of insects. (1) Plowing in winter; the insects that fall on the ground are turned to the ground, the underground overwintering pests turn to the ground, and the dormant environment of pests is destroyed. According to field surveys, compared to plowed or uncultivated pear orchards, the damage rate of P. elegans to young fruits was 9.3%; P. edulis had a low rate of damage to shoots of 7.8%; (2) Weeding in early spring to keep the pears clean , Destroying the habitat of pests; (3) In the pear orchards where Pygmystis mosquitoes are not severe, insect leaves and branches can be removed manually. 2, focus on the ground to spread medicine. The overwintering adult was at the beginning of the excavation period. Pyralidae was from mid-March to the end of March. The Pear was from the end of March to the beginning of April, and the Pest-like beetles were in April and mid-April. Spread the pesticide at the beginning of the excavation. Mu with 5% trichlorfon powder 4 kg, mixed with fine soil or fine sand in the canopy drip line between the lines, the effect is good. After light rain or showers, the effect will be more pronounced. 3, crown canopy spraying. In the period of pear infestation, P. citriformis and P. edulis emerged during the peak period, drug control can play the role of pre-press control. Pest control insects can use 90% crystal trichlorfon 700 times or enemy kill 2.5% cream 1500 times solution; control pear real bees can use swab 20% EC 2000 times or 40% omethoate 1200 times Pesticides against the pear can be used 25% insecticide double 500 times. Black Goji Berry is rich in protein, fat, sugar, free amino acid, organic acids, minerals, trace elements, alkaloids, vitamin C, B1, B2, calcium, magnesium, copper, zinc, manganese, iron, lead, cobalt, nickel, cadmium, chromium, potassium, sodium and other nutrients. Been scientifically tested that the content of calcium, iron, niacin is respectively 2.3, 4.6, 16.7 times of red Goji Berry, especially procyanidins than blueberries(Black goji berry contain procyanidins is 3690 mg / 100 g; blueberries contain procyanidins is 330-3380 mg / 100 g). This is the highest ever discovered procyanidins content of natural wild fruit, which is the most effective natural antioxidant, its efficacy is 50 times of VC and 20 times of VE, the vitamins, minerals and other nutrients content is also higher, medicinal and health care value is much higher than ordinary red Goji berry, known as "soft gold". One-Grade Black Goji Berry,Dried Black Wolfberry,Grade A Wolfberry,Natural Nutritious Black Wolfberry NINGXIA HONG RISING BIOLOGICAL TECHNOLOGY CO.,LTD. , https://www.hongrisinggoji.com