With the advancement of agricultural technology, the variety of pesticides is complex and the situation of pesticides causing phytotoxicity is also very common. Then how to solve the phytotoxicity of pesticides? Scientific medicine is the key, and then Xiaobian will introduce you in detail.
As a special commodity to control pests such as pests and diseases in agricultural production, pesticides mainly include insecticides , fungicides, herbicides and plant growth regulators. According to statistics, after the application of pesticides around the world, the annual loss of crop yield can be reduced by 30% to 40%, and economic losses can be recovered by 300 billion US dollars. Roman Buliang, an internationally renowned wheat breeder and Nobel laureate, once said: "Without chemical pesticides, humans will face the threat of hunger."
As far as China is concerned, China has a large population and a small per capita cultivated area. To make everyone have enough to eat, the significance of using pesticides is even more important. According to statistics, through the use of pesticides, China can recover 48 million tons of grain loss, 1.8 million tons of cotton, 58 million tons of vegetables and 6.2 million tons of fruits every year. The economic value is about 55 billion yuan. It can be seen that if there is no use of pesticides, our usual eating and wearing will be seriously affected.
Of course, the use of pesticides is indeed a double-edged sword, especially the abuse of pesticides in recent years. It does not pay attention to the safe application of pesticides, which makes the agricultural residues of agricultural products exceed the standard, causing pollution to the agricultural ecological environment, especially the pollution of rural water resources. Serious, and at the same time bring hidden dangers to people's health.
For this reason, the world is working hard to solve the negative effects of using pesticides.
First, adopt the “prevention-based, comprehensive prevention and control†plant protection policy. First, prevent crops before pests and diseases occur, and control the hazards in the primary stage. After the onset of the disease, chemical, physical, mechanical and other control measures are taken to reduce the use of chemical pesticides. To put it simply, just like people, first of all, strengthen physical exercise and reduce the incidence of disease, instead of waiting for a lot of medicine after the illness.
Second, the use of high-toxic and high-residue pesticides is prohibited, and new low-toxic and environmentally-friendly new pesticides are developed.
The third is to supervise the use of pesticides and to safely apply pesticides. In fact, the root cause of many agricultural products exceeding the standard is the abuse of pesticides, and pesticides are not applied strictly according to the interval between application. The safe interval of pesticide use refers to the number of days between the last application of pesticides and the harvest of agricultural new products, which can ensure that the agricultural residue content of agricultural products does not exceed the standard.
After the application of each pesticide, his safety interval is different. Therefore, the farmers' friends must observe the instructions of the pesticide when using the pesticide, and strictly follow the instructions in the application frequency and application amount. At the time of harvest, the number of days in the safety interval must be sufficient, so as not to cause the agricultural residue content of agricultural products to exceed the standard.
In fact, although China is a large country with a large population and a large agricultural production country, the use of pesticides is not the largest. Japan's arable land is only 1/23 of China's, while pesticide sales are 1.75 times that of China.
The area of ​​cultivated land in France is 275 million mu, which is about 1/7 of China's cultivated land area, and its pesticide sales are 1.95 times that of China. However, the quality and safety of their agricultural products are higher than ours. The key is not how much pesticides are used, but how to use pesticides safely.
More pesticide knowledge , please pay attention to China Pesticide Network
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