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Spray method
It originated from the Jiang and Zhejiang rice areas in the 1970s. Although the worker-negative-16 sprayer is used, the nozzle and the nozzle are removed, and the syrup is directly ejected from the switch. It is completely unmedicated, and the water droplets of the syrup are extremely thick, similar to raindrops, so it is called “spraying methodâ€. Such coarse drug drops are easy to land directly, and the loss of pesticides is extremely wasteful.
Poisonous soil method
It was originally derived from the application of 666 powder in the rice area of ​​the 1960s. It was suggested that the powder mixed with wall soil or road dust should be applied to the base of the rice bush by hand, one by one, called the “bait methodâ€. "There is no need for a sprayer and a duster, so it's extremely popular and doesn't push away." After the cessation of production, the six-six-six-six-six-six continued to be popular, so that any pesticide preparations and even emulsifiable concentrates were mixed with soil powder and mixed into "poisonous soil" for hand-spraying. It was renamed as "poisonous soil method" and was widely used. This kind of "poisonous soil" does not have any specifications and standards at all, and is completely prepared by farmers themselves. The “soil†used in various places has no destructive effect on the active ingredients and dosage forms of pesticides, and it is impossible to test at all. The wettable powder and the emulsifiable concentrate are mainly sprayed after being diluted with water, but after being made into "poisonous soil", they are neither powder nor granules, and the adhesion on the crop after spraying is extremely poor, and the resulting pesticide Loss of waste and pollution of the environment can be imagined.
Water gun method
Also known as the "water tank method", originated from the Guangdong rice area in the late 1970s. This is a simple hand-held water gun made by the local plant protection department. The sprayed drops are thicker. At this time, the water guns cost only two or three yuan each, so they were quickly pushed open and spontaneously spread to other rice areas as an experience and new products.
Splashing method
The so-called "splashing" is originally a method of pouring water from a dung manure commonly used by rice farmers in the southern rice region. Some rice farmers also add pesticides for rice fields to manure water and pour them into rice fields together with manure water. This is the wrong way. Because the amount of water used to pour manure water is large, most of the pesticides are scattered in the paddy fields with water, and the amount of pesticide deposited on rice plants is extremely small.
Several wrong methods of administration
For many years, rural areas in China have been using some “soil methods†to spray pesticides. These methods seem to save money and are convenient, very popular, and they go away and spread widely. In fact, farmers have to waste a lot of pesticides and cause personnel poisoning and environmental risks. The most common methods are as follows:
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