"The introduction of nanotechnology into the development of bio-pesticides has the advantages of greater efficiency, environmental protection and safety, and will become a breakthrough for the development of new pesticides with independent intellectual property rights in China." At the annual meeting of the Sichuan Nano-Academy held recently, the special report on the research and development of nano-bio-pesticides at the Sichuan Academy of Agricultural Sciences attracted great attention from the industry. The academicians and experts recently interviewed by the reporter agreed that this technology is expected to promote the leapfrog development of the pesticide industry in China. Since the discovery of the insecticidal activity of DDT from 70 years ago, chemical pesticides and biological pesticides have been the main means of responding to agricultural pests and diseases. However, a large number of chemical pesticides have been used to pollute air, water, soil and food. Therefore, in recent years, various countries have developed a series of biopesticides with strong selectivity, high efficiency, low cost, no pollution, and no harm to humans and animals. A variety of sales in 2005 reached 8 billion US dollars. China is also gradually replacing biological pesticides with chemical pesticides, especially in vegetable production. Experts told reporters that the current development of biological pesticides is mainly focused on extracting effective insecticidal substances from plants. This traditional thinking has three disadvantages: First, it does not meet the principle of multi-component coordination for prevention and treatment of drugs, and second, it separates single components. Not necessarily the main active ingredient; Third, whether it is organic synthesis, inorganic synthesis, or plant extract pesticide ingredients are inseparable from the chemical production process, will inevitably bring environmental pollution pressure. In order to solve the above problems, many scientists have focused on nanotechnology. The study found that nanotechnology can promote the disruption of plant cells, so that the useful insecticidal substances can be easily released to directly act on pests, greatly improving the efficacy, and relying on the surface effects of nanomaterials to fully reduce the dosage. Bayer, BASF and other multinational corporations are carrying out research on nanochemical chemical pesticides, mainly microemulsions and microencapsulated nanopesticides. At present, there are fungicides and plant growth agents available. In recent years, scientific research institutions and manufacturing companies in Beijing, Shaanxi, and Guangdong have also conducted research into the nanoization of pesticide additives. The findings of the new investigation by the Chinese Academy of Sciences show that there are no reports on the products of nano-biological pesticides. In 2003, the Sichuan Academy of Agricultural Sciences and Sichuan Guanghan Hengyu New Materials Co., Ltd. jointly undertook the project of “Development and Application of Nano Bio-pesticides†of Sichuan Science and Technology Department. The scientists and technicians made nanotechnology nicotine through innovation and processing. 2004 In the past, we achieved a small test result of nano bio-pesticides, 18% smoke and aqua. Using 58,000-fold transmission electron microscopy, 95% of the pesticide particles were less than or equal to 100 nanometers. By nano-implantation of biologically implanted pesticide particles, fat-soluble and water-soluble insecticidal substances were effectively released and directly acted on pests. Vigorous features. The person in charge of the high-tech office of the Sichuan Provincial Science and Technology Department introduced that in 2004 they organized a field meeting of nano-bio-pesticides against cabbage bugs in the village of Li’an, Pengzhou, Sichuan Province. Experts agreed that the pesticide has a broad spectrum of insecticides and has strong efficacy. The pest effect is three times that of ordinary pesticides; it is green and can be used for the production of pollution-free foods; the use of drugs is less and the cost is reduced. In 2005, the Sichuan Academy of Agricultural Sciences expanded the control subjects in Pujiang and Guanghan in Sichuan Province. The results showed that the nanobio-pesticides had more than 85% control effect on tea aphids and eggplants and so on. At the same time, experiments were carried out in different ecological areas such as Guangxi, Hubei and Guizhou, and their efficacy was above 90%. At present, enterprise product standards are being formulated. The reporter learned from the interview that 18% of the smoke and water agent was the first nano biological pesticide product that was approved by the Ministry of Agriculture and officially entered the pesticide registration process. According to reports, in 2006, Sichuan Province will set up China's first nano-bio-pesticides joint-stock company, based on domestic, facing the world market, engaged in the development and operation of nano-bio-pesticides. The company plans to build a 1,000-ton/year 18% amo-aqua agent nano bio-pesticide production plant with a control area of ​​up to 30 million mu, which can save economic losses of nearly 1 billion yuan, greatly reducing the pollution of pesticides to the environment, and for China's agriculture. Increase production and increase food security and play an important role in food security.