Chemical herbicides and the environment
Posted at2019-10-25

The effects of chemical herbicides on environmental pollution and their solutions, the use of chemical herbicides to control weeds has good effects, high efficiency, low cost and simplicity, and has played an active role in the “three rural” economy. Stable, rapid, and healthy development contributes a lot. Shandong Liaocheng Dong Adongchang Coking Jinhua Steel Company Iron Test: However, due to the great irregularities in the use and management of chemical herbicides, chemical herbicides that remain in soil and crops have become important for transforming the ecological environment. Bottlenecks, how to mitigate ecological hazards and strengthen comprehensive management have strong practical and developmental significance for improving the protection of agricultural ecological environment.

1 The development of chemical herbicides

The chemical herbicide 2,4-D was discovered and applied in 1942, and since then the chemical weed control technology has been applied to farmland. However, the chemical herbicides developed and utilized before 1980 have a small variety and a single structure. The early organic herbicides are phenolic compounds. Compared with inorganic herbicides, they have the advantages of low dosage and high selectivity to weeds. In 1975, Levitt developed the first high-efficiency variety of chlorsulfuron. In 1976, the research on sulfonium-based herbicides was successful. After 1980, it was the peak of chemical herbicides, and more than 18 new varieties were developed each year, and developed in the direction of ultra-micro and ultra-efficient, developing new varieties of herbicides with ultra-high efficiency, broad spectrum, low toxicity, high selectivity and low residue. , to promote weed control technology to a new level. Shandong Liaocheng Dong Adongchang Coking Jinhua Steel Company Iron Test: In 1999, only 45 paddy field compound herbicide varieties were approved for registration in China. The type of herbicide resistant and varieties developed in the United States are glyphosate and glufosinate. Imidazolinones, dilute sulfoniums, sulfonyl groups, and the like. In order to reduce the residues and damage to soil and crops, 13 of the 450 pesticides that were banned globally from December 31, 2003 were herbicides, of which 14 were prohibited in China.

2 Use status and Hazards

2.1 use status

According to data from the Agricultural Promotion Center of the Ministry of Agriculture in 2008, the total demand for herbicides in the country was 70,000 tons, and the demand for selective, safe and efficient herbicides increased [3]. Widely used in China's market, such as sulforaphane, ethametsulfuron, chlorsulfuron, pyrimesulfuron, bensulfuron, jadesulfuron, sootsulfuron, chlorosulfuron, etc., has become a practical agricultural technology. The proportion of pesticide products.

2.2 Hazards

Herbicide residual phytotoxicity has become a serious problem at present, making the determination of herbicide residues in water and soil a prerequisite for the application of this herbicide.

3 Countermeasures to reduce the risk of chemical herbicides

3.1 Accelerate the construction of policies and regulations, and improve the chemical herbicide residue treatment system

The agricultural environmental protection legislation aims to protect the cultivation of existing biological species, coordinate the development of the agro-ecological environment, and effectively achieve the goal of sustainable development of agriculture and rural economy.

3.2 Strengthen the development of standard systems to provide governance standards for herbicide contamination

Actively docking international environmental quality standards, changing administrative means as technical means, summarizing advanced production experience, adopting new scientific and technological achievements, increasing the proportion of chemical herbicide pollution in the governance standard system, improving agricultural environmental technology control, standard control system, and scientifically formulating China Agricultural ecological environment quality standards.

3.3 Strengthen the use of herbicides to effectively reduce residues during use

Establish a long-term mechanism for farmers' training, guide farmers to use herbicides scientifically, and establish environmental awareness.

3.4 Strengthen government supervision and management

Enhance the awareness of environmental protection and rule of law, improve the quality of law enforcement personnel, and strengthen law enforcement supervision of the agricultural ecological environment.

Sustainable development Concept  has always been the driving force for our development. Protecting the environment, abiding by the highest standards of professional ethics and respecting others are the core values that Speranza has always adhered to.

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