Biogas slurry can not only be used as foliar fertilizer, but also has functions of sterilization and disease prevention. Its use method is simple, sterilization effect is good, and pollution-free, but also conducive to the protection of the ecological environment, is an ideal pollution-free pesticide. At this stage, the state vigorously advocates the construction of biogas digesters. After the biogas is actually used, the remaining biogas slurry can also be used as a pesticide. This not only saves energy, but also uses biogas slurry as pesticide to produce pollution-free vegetables. Cucumber: Take 1 part of the filtered biogas slurry and mix it with 3 parts of water. Spray evenly onto the cucumber leaves to prevent the occurrence of bacterial keratoses. The control effect can reach over 90%. Tomato: Take 1 part of the filtered biogas slurry and mix 3 parts of water. Spray the mixture on the tomato leaves to prevent and control tomato early blight. The effect can reach over 80%. 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". Two-Grade Black Goji Berry,Grade B Wolfberry,Natural Black Goji Berry,Grade B Dried Goji Berry NINGXIA HONG RISING BIOLOGICAL TECHNOLOGY CO.,LTD. , https://www.hongrisinggoji.com