Selection and use of pesticides currently the main problems

By pesticides to control, China's annual direct economic losses of about 80 billion yuan, but China's pesticide use process there are still many problems in the new market economy, how to improve the scientific and rational pesticide selection and safe use of work to produce quality and safety of agricultural production and the rural economy has become a top priority.

Pesticide production from our current situation, the national production of more than 2,600 enterprises, registering about 500 varieties of more than 600 agents, the product of more than 20,000. 2009, pesticide output reached 1,849,200 tons, of which pesticide production was 657,000 tons, accounting for the proportion of total pesticide 43.43%. Herbicides cumulative production of 650,500 tons, accounting for pesticides herbicides proportion of 42.99 percent of total output. Fungicide total output reached 205,300 tons, accounting for pesticides fungicides proportion of 13.57 percent of total production. Ranking first in the world.

In recent years, China's cultivated land area remained at about 110 million hectares, sown area of ​​23.46 million mu of crops, pests and diseases in an area of ​​about 56 million mu of times, control area of ​​58 mu Ci. Pesticides to control through an annual direct economic losses of about 80 billion yuan, pesticide input-output ratio of about 1:6-10. In the new market economy, how to further improve the scientific and rational choice and pesticide safe use, produce high-quality and safe agricultural production of rural economy has become imperative.

Seven current issue of pesticide use

Select Pharmacy unscientific. First, the farmers did not understand the control object, and a variety of pests and diseases when the indiscriminate use of pesticides habits, even with insecticides to combat diseases. Second, the abuse of highly toxic, high residue pesticide phenomena still occur. The continuous enrichment of these pesticides not only led to excessive pesticide residues in crops, but also seriously pollute the environment.

Period or improper use of crop hand pump sprayers spraying. First to fight drugs is not timely, but no worms do not fight drugs, and saw a lot of worms occurred resort drugs, drugs to fight the best time delay. Second, do not follow the index medication, see the insects on governance, see the diseases prevention, not only affect crop growth and development, and can cause contamination of agricultural produce grain. Third, the abuse of hormone pesticides.

Pharmaceutical preparation unscientific. Often formulated out of the solution concentration is too high, resulting in an increase of pesticide residues in produce injury. Also increases the speed of pest resistance.

Spraying poor results. The following main reasons: First, when the fear of effort to fight drugs, the easy way, liquid spraying is not in place, uneven plant bore, dorsal often vain drugs, some arbitrarily increase the manual sprayer  piece caliber, or even remove the sheet to make uniform contact with the discharge of the liquid can not parasites, it is difficult to obtain a good control effect. Second, do not look at the weather, time, free agents. Regardless of temperature, humidity, wind and other weather, random fight drug control effects caused by poor or personnel injury or even poisoning. Three, resulting in pesticide application equipment behind effective utilization rate. According to expert estimates, the effective utilization of pesticides only

20% to 30%, far below the developed countries, 50% to 60% on average.

Use unscientific. First, the reliance on chemical pesticides is serious. Do not know how rational use of agricultural, biological, physical and other integrated pest control techniques, but blindly extensive use of chemical pesticides. Second, the use of pesticides pharmaceutical blind mix, making pest resistant or cause injury occurred. Three are free to increase drug concentration and dose.