The answer to your question is as follows:
According to the report of agricultural technology service, in recent years, the research work on artificial cultivation of Cordyceps sinensis has been widely and deeply carried out at home and abroad, but under the condition of complete artificial control, the research work on infecting host larvae with Cordyceps sinensis to produce the same fruiting body as natural Cordyceps sinensis has not yet made a breakthrough. Accurately speaking, artificial cultivation is still very difficult. In recent years, the so-called "Cordyceps sinensis" in some advertisements is generally Cordyceps militaris (Cordyceps militaris) rather than real Cordyceps sinensis, and the efficacy and price are quite different. At present, there are at least four problems to be solved in artificial cultivation of Cordyceps sinensis.
1, strain. Most of the strains are Cordyceps sinensis from nature, which are obtained by routine separation and culture. According to the research, during the sexual morphogenesis of Cordyceps sinensis, a certain humidity is needed to meet the water needed for complex physiological changes in the body, and there is a correlation between temperature and humidity. Under a certain humidity, the temperature changes slowly or relatively constant, which is not conducive to the extraction of fruiting bodies. The occurrence of sex type must be treated with low temperature and variable temperature. Fujian Sanming Institute of Fungi has experienced years of rotating tube culture. Only immature young daughters will grow up. They believe that the formation of Cordyceps sinensis must be completed with the participation of some active substances from bat moth larvae.
2. The technology of raising bat moth. Sichuan Institute of Traditional Chinese Medicine has conducted a long-term study on the artificial rearing of bat moths. Even under the condition of constant temperature, it takes 230-570 days to complete a generation, not to mention the specific operation, feed and feeding environment of each insect state must be properly handled. Such harsh conditions are impossible for ordinary people.
3. The route of infection. Cordyceps sinensis is the contact between spores and larvae of Cordyceps sinensis, which can lead to the death of fruiting bodies. According to observation, the infection rate of host 4-5 instar larvae is the highest. The mature larvae are rarely infected, and the larvae below the third instar are not infected. How to seize the opportunity is also difficult for ordinary people to grasp. On the issue of infection, if the conditions of artificial cultivation of insects are better, insects will be too strong and antibacterial, and it will be difficult to be infected. If the conditions are poor, bugs and bacteria will invade and cause death, and both cases will fail.
4. Imitate the ecological environment of the place of origin. That is, the temperature, humidity, light, soil, vegetation and other conditions in mountainous areas with an altitude of 3500-5000 meters are also beyond the reach of ordinary people. It is also for these reasons that most people will never grow Cordyceps sinensis. How much output can be collected in a short time as advertised is a lie. Even so, why are there reports of successful artificial cultivation in some newspapers and magazines? In fact, they are only talking about the mycelium culture of Cordyceps sinensis or the homologous culture of Cordyceps sinensis, not the real Cordyceps sinensis. Recently, Oki Sato, a scientist at the Japanese Forest Research Institute, announced that it only takes one and a half months to cultivate Cordyceps sinensis. In fact, he only cultivated a kind of Cordyceps militaris, not a real Cordyceps sinensis.
The above contents are for reference only.