Development of Taxus should be cautious

After entering the 21st century, the yew in some places of our country has been in an uproar, and the small advertisements everywhere have blown up the benefits of planting yew, blowing out a "sky-high price" of 100000 yuan per 667m2. Under the temptation of high returns, some kind-hearted investors were bewildered and invested in planting yew, which seemed to become a new project to get rich overnight. In this regard, China's relevant experts remind: enthusiastic investment in the development of yew enterprises and farmers need to be cautious. The true face of the yew is as follows:

1. Exaggerating the use of products some companies advertise and exaggerate the use of yew, giving people the illusion of treating all pain with yew. In fact, paclitaxel extracted from Taxus chinensis is mainly used to treat metastatic ovarian cancer and breast cancer. It has a certain curative effect on lung cancer, esophageal cancer and other cancers, but has not been found to have any effect on other cancers.

2. Exaggerating the adaptability of yew cultivation does not have a very wide range of adaptability as advertised, but has a certain range of adaptation. According to experts, there are four species and one variety in China, namely, Taxus mairei, Taxus yunnanensis, Taxus yunnanensis, Taxus chinensis and Taxus mairei. They are mainly distributed in Heilongjiang in the north, southern Gansu in the west, and 20 provinces (regions) in the south, such as Xizang, Guangxi and northern Guangdong. they basically grow in mountainous areas with an elevation of 500m to 3500m, and are more suitable for slightly acidic soil and humid climate. Not everywhere can be introduced. Regional experiments must be done before introduction and planting, and then introduction on a large scale after being sure of normal growth and cultivation value.

3. Exaggerate the high return. Many advertisements "exaggerate" the rate of return. For example, there is an advertisement saying, "after planting for five years, one plant can be sold for 80,100 yuan, and more than 3000 trees can be planted on 667 square meters of land, with a five-year benefit of 24 to 300000 yuan."the recovery price of dried branches and leaves is 90 yuan per kilogram." "planting 0.66 hectares of yew can extract 300,500g of paclitaxel at a price of US $3000 per gram, with an income of US $90-1.5 million (RMB 738-12.3 million)"; "door-to-door purchase and product deposit". In fact, the benefit for every 667 square meters in five years is only tens of thousands of yuan.

Exaggerating Taxol content many companies' promotional materials boast that their yew is a new variety with a high taxol content. In fact, the taxol content of different yew varieties varies greatly, and some varieties have very little taxol content. Even if it is the same variety, the content of paclitaxel is different in different planting areas, some areas have high content, some areas have almost no paclitaxel or little paclitaxel content and no extraction value.

5. Exaggerating the market prospect, industry insiders speculate that the annual theoretical demand for paclitaxel should be 500-1000 kg. Due to the high price, the actual domestic consumption is only 1-2 kg. With the existing planting area of 333 hectares, if the development is normal, the domestic yew raw materials can basically meet the production needs after 2-3 years. Therefore, advertising exaggerates that the market prospect is broad, and the market will not be saturated for decades, which is purely attractive.

6. Yew companies with empty buildings often cheat them out under the guise of "high-priced recycling". In March this year, law enforcement officials in Haidian District of Beijing found that six companies had disappeared when they conducted on-the-spot inspection of six units in the district. Many farmers invest their money in these companies and lose all their money.