First, the culture medium carrying a variety of pests and diseases The vast majority of pathogens and hosts of harmful insects are organic matter. Such as straw, cottonseed husks and livestock excrement, etc. itself carry a large number of spores, bacteria, aphids, mosquitoes and flies, and other eggs: Before use, the culture medium needs to be sterilized or fermented to eliminate or reduce the source of pests and diseases. The cardinal number, to reduce the degree of damage caused by the insect pests. Second, nutrient-rich cultivation matrix provides a good food source for pests and diseases. Many pests and pathogens use rotten organic matter as a food source. For example, insects such as hoppers, aphids, grasshoppers, nematodes, termites, and hoverflyes are all happy. Eat ripe moist organic matter. The substrates used for the cultivation of mushrooms, straw mushrooms, and Coprinus comatus and Pleurotus ostreatus after fermentation ripen can emit unique odors, attracting insects to lay eggs in the material. In the case of abundant food sources, maggots and gnat mosquitoes can quickly proliferate their offspring in a short period of time through maternal reproduction, often occurring 30 to 40 days later. The maturation matrix is ​​also the base for the rapid propagation of competitive bacteria, such as Trichoderma, Rhizopus, and Neurospora spores, which can be rapidly propagated in bran-rich, corn meal, cottonseed hulls, and sterilized matrials. At the same time, the growth rate of the inoculated Pleurotus nebrodensis strains was slow, and the growth rate of the bacteria was much faster than that of the Pleurotus nebrodensis. Unsterilized and matured culture medium, Aspergillus, and other bacteria failed to infect. Once sterilized and matured, the bacteria rapidly propagated. Third, the appropriate mushrooming environment provides superior conditions for the propagation of diseases and insect pests Pleurotus ostreatus germinating temperature at 20 ~ 26 °C, mushrooming temperature at 10 ~ 15 °C, medium moisture content of about 62%, humidity at the place of the mushroom 85% or more. The suitable environment will accelerate the growth of mycelium and make the mushroom grow smoothly. At the same time, it is also suitable for the conditions of certain diseases and insects. Four, edible fungi and bacteria in the physiological characteristics of the difference is small, more consistent physiological characteristics Many bactericidal drugs easy to injure mycelium and mushroom body, resulting in phytotoxicity. For example, thiophanate-methyl and chlorothalonil are used in spices to easily inhibit mycelial growth. Carbendazim has inhibitory effects on the mycelium of Pleurotus eryngii, which results in no mushroom or abnormal mushroom after application of dichlorvos. 5. At the same time, the pests invade, cross-infested mushroom mosquitoes, and mushroom flies carry maggots and pathogens. When they feed and spawn on the culture medium and mushrooms, they spread viruses, aphids, and germs, which then infect the entire environment. Sixth, the pests have a wide range of infestation, a large amount of reproduction, and a strong fulminant pathogen that has not been observed in the previous period has germinated and grown in the medium, and once found, it has caused damage. The hyphae can not be controlled by drugs during the germination period. Some diseases in the mushrooming period require multiple doses, and some diseases can be cured without treatment. For example, bacterial spot disease and yellow mushroom disease must be controlled more than 3 times to control the disease. Condition. The aphids, ticks, and mushroom mosquitoes can feed on the substrate, the hyphae, and the mushroom, and they are all eaten by the insects on the surface and inner layers of the medium. Teeth Polishing,Dental Polishing,Dental Polishing Machine,Dental Lab Polishing Machine Hebi Tianchi Trading Co., Ltd , https://www.hebitianchi.com