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Recently, the Ministry of Agriculture and Rural Areas responded to the proposal of "Third-term agricultural products, banning the use of hormones" put forward by six thirteenth national representatives including Li Cuitian. Among them, the reply on plant hormones is as follows.
The Ministry of Agriculture and Rural Areas conscientiously implements the deployment of the Party Central Committee and the State Council, adheres to the "production" and "management", performs its duties in accordance with the law, and solidly promotes the quality and safety of agricultural products . In 2017, the overall qualified rate of routine monitoring of major agricultural products in China was 97.8%. Among them, the qualified rates of monitoring of vegetables , fruits, tea, livestock, and aquatic products were 97.0%, 98.0%, 98.9%, 99.5%, and 96.3%. There were no major agricultural product quality safety incidents in the year, and the agricultural product quality safety remained stable and improving.
A class of trace chemical substances that are naturally present in plants that have a regulating and controlling effect on plant growth and development, commonly known as plant hormones, also known as plant endogenous hormones; the expansion agents and growth that you add in the growth process of vegetables and fruits mentioned in your proposal Hormones are a class of chemical substances that have the effects of inhibiting and stimulating the growth and development of plants, or regulating the resistance of plants to stress, including natural plant hormones extracted from living organisms and compounds that mimic natural artificial synthesis. They all belong to plant growth regulators . Called plant exogenous hormones. From a functional point of view, in addition to their functions of swelling and ripening, they can also promote rooting and germination, adjust flowering period, inhibit growth, and dwarf plants.
In terms of management, since 1997, plant growth regulators have been managed as pesticides in accordance with the Regulations on Pesticide Management. Only after obtaining pesticide registration and obtaining a production license can production, operation and use be carried out. During pesticide registration approval, the United Nations Food and Agriculture (FAO) and World Health Organization (WHO) pesticide safety evaluation standards and methods are used to conduct scientific tests and review of plant growth regulators applying for registration, only when it has been proven to have better efficacy, The registration can only be approved when it is healthy, safe and environmentally friendly to humans and animals. At present, there are nearly 40 plant growth regulators that have been registered in China, which are mainly used in some fruits, vegetables, cotton, wheat and other crops. There are more than 100 registered and used internationally, of which more than 40 are allowed in the EU (including ethephon, clopisol, etc.). Plant growth regulators that have been approved for registration must formulate safe use technologies, including the medication period, dosage, application method, scope of use, precautions, and safety interval, etc., and clearly label the product label to guide farmers to use it rationally. In addition, the registered products are subject to a series of residue tests, and residue limit standards and reasonable use guidelines are formulated based on data such as residue tests to ensure the quality and safety of agricultural products.
In terms of safety, no food safety incident caused by plant growth regulator residues has occurred internationally. In China, agricultural products to which plant growth regulators have been applied are also very safe for consumers. Compared with other pesticides, although plant growth regulators are included in the management of pesticides, they are not traditionally used for disease control, insect control, and weed control. Their products are of low toxicity, and some are listed as almost nontoxic because they are not required to establish residue limits. Exempt substances. For example, clopiuron, which is commonly used in swollen fruits, is less toxic (half lethal dose greater than 4,918 mg / kg) than table salt (half lethal dose is 3,200 mg / kg). In addition, due to the small amount of plant growth regulators, excessive use tends to have adverse effects, and it is impossible for farmers to use them in large quantities, so the residue of plant growth regulators is low. Since 2015, our Ministry has conducted a risk assessment of plant growth regulator residues in agricultural products, and the results show that the average residue value of plant growth regulators is only 0.001 to 0.034 mg / kg, the risk of dietary exposure is very low, and product quality and safety are guaranteed.
In terms of necessity, in agricultural production , when plant endogenous hormones are insufficient, plant growth regulators need to be used to achieve the purpose of increasing yield, improving quality or extending the supply period, and saving labor.
For example, bananas are prone to mechanical damage, especially ripe bananas are not resistant to storage and transportation. Therefore, green fruit is generally picked and transported. After reaching the destination, if the green bananas have not fully matured, they can be ripened artificially with ethephon to improve the flavor and taste of the bananas. Sex.
Treating potatoes with plant growth regulators such as chlorpheniramine can inhibit potato germination and avoid poisoning caused by eating germinated potatoes.
The use of thiaphenone in late cotton to promote defoliation and peach opening can improve quality, facilitate mechanical harvesting, and increase production efficiency.
Plant growth regulators are an important means of modern agricultural production, but consumers have doubts about "plant hormones" , which has affected consumer confidence. In response, the Ministry of Agriculture and Rural Affairs carried out a series of science popularization, wrote a science popularization manuscript, published a science popularization manual "Be a Knowledgeable Eater-Bring You to Know Plant Growth Regulators", and produced a science popular micro-video "" Contraceptive Pill "Cucumber "The Truth" and "The Truth of Hollow Strawberries and Hollow Strawberries", etc., guide public opinion positively.
In the next step, the Ministry of Agriculture and Rural Affairs will continue to strengthen science popularization, increase technical training and guidance, popularize plant growth regulator knowledge, increase farmers' awareness of scientific medication and technology, and guide the public to rest assured consumption.