The large-scale promotion and application of green nano pesticides can produce significant economic, social and ecological benefits in the following aspects: First, the source control of non-point source pollution of pesticides, improve food safety and ecological environment. China's annual use of pesticide preparations more than 1.5 million tons, of which milk oil accounted for about 30%, the consumption of organic solvents and auxiliaries 500,000 tons. The popularization and application of nano pesticides can reduce the amount of pesticides in the field by more than 30%, eliminate the secondary pollution of harmful solvents and auxiliaries, and reduce the pollution load of pesticide residues. Second, we will strengthen the ability to prevent major diseases and pests and promote the development of green prevention and control technologies. Nano pesticides can achieve accurate drug release to the target, improve biological activity and toxicity, so as to improve the control effect of pests and diseases. Third, we will save costs and increase efficiency in agriculture and promote green agricultural production. Nano pesticides can reduce the amount of pesticides and application times, reduce application costs and operating costs, improve the quality and added value of agricultural products, and increase the income level of farmers. The fourth is to promote the transformation and upgrading of the pesticide industry and cultivate strategic emerging industrial clusters. China is the world's largest pesticide production and exporter, the annual output of pesticides has reached 3.8 million tons (reduced original drug), the annual output value of nearly 250 billion yuan, but the product structure is still dominated by generic drugs and primary raw materials, it is urgent to strengthen the level of independent innovation, the development of high-end green nano pesticide new preparations.

Therefore, the development of efficient, safe and low-residue nano-pesticide new preparations is a key measure to deepen the supply-side reform of agriculture and accelerate the green and high-quality development of agriculture, which has significant economic, social and ecological benefits. In order to continue to maintain the international leading advantage of China's nano pesticide research and accelerate the industrialization of major achievements, it is suggested that China's agricultural administration agencies, as well as pesticide production management, market supervision and new product registration departments, further take active and effective countermeasures to accelerate the production and promotion of green nano pesticides.

First, increase scientific and technological investment and industrial support, innovate the "government-industry-university-research" collaboration mechanism, and accelerate the industrialization process of nano pesticides. Plan and deploy a number of demonstration projects for scientific and technological innovation, achievement transformation and integration of nano-pesticides, organize and coordinate leading scientific research institutions to carry out industry-university-research cooperation with leading enterprises, systematically design a number of major products of high-efficiency, safe and low-residue nano-pesticides for major crop diseases and pests, and complete the production of pilot maturation, process and equipment system integration. Establish production technical specifications and product quality standards, and promote the large-scale production and application of nano pesticides.

The second is to improve the new product registration and market access system, standardize and lead the healthy development of the nano pesticide industry. Formulate and introduce the approval and registration rules for nano pesticides as soon as possible, establish quality control and testing standards for nano pesticides, regulate the production, circulation and safe use of new products, and protect the legitimate rights and interests of producers and consumers. Establish promotion incentive systems such as subsidies for new products of nano pesticides, ecological compensation and public welfare services to accelerate the promotion and application process.

The third is to accelerate the integrated demonstration and promotion of green nano pesticides, and build an efficient and safe green prevention and control technology system. Organize relevant scientific research institutions and agricultural technology extension departments to systematically carry out evaluation tests on quality improvement, efficiency improvement, quantity saving and emission reduction of nano pesticides in view of the prevalence and harm laws of major crop diseases, pests and grasses. Combined with the ecological and environmental conditions of different major producing areas, the application scope of various nano pesticides is determined, the dosage and intensive application methods are optimized, and a safe and efficient green prevention and control technology system and large-scale promotion and application mode are built through integrated demonstration, leading the rapid and healthy development of green planting industry.

"Nano pesticide" is one of the important research fields with international leading advantages in the cross field of agricultural frontier in China. After nearly two decades of systematic exploration and original innovation by Chinese scientists, it is achieving a major breakthrough from 0 to 1. Promoting its development into a transformative green pesticide technology system is of great significance for promoting the efficiency and emission reduction of chemical pesticides in China and the control of residual pollution at the source.