[China Agricultural Machinery Industry News] The development of plant protection drones must play an important role in the stable development of agriculture. At present, most farmers in China still use manual knapsack sprayers. This sprayer developed in the 1930s has a very low effective utilization rate of pesticides. Moreover, as a large number of rural laborers go to work in cities, the labor force engaged in agricultural production is continuously decreasing. For large-scale farmers, the problem is not only the increasing labor costs, but also the dilemma of no one is willing to earn money.
The drawbacks of traditional fight drugs are frequent, plant protection drones are popular in the agricultural market.

1 Application equipment is backward, pesticide waste is seriously lost
Most farmers in China still use manual knapsack sprayers, which were developed in the 20th century in the 1930s, and the effective utilization rate of pesticides is very low. According to the data, the effective adhesion rate of pesticides can only reach about 15% when the application method is appropriate. Under normal circumstances, the effective adhesion rate of pesticides is less than 10%. This means that a large amount of liquid is wasted and lost to the soil, water and air. Studies have shown that 40%-60% of the waste of pesticides flows directly into the soil, and 5%-30% of the liquid is diffused into the air in the form of very fine mist droplets, thereby Caused serious pollution.
2 “Opium-type treatment” causes pesticide residues to exceed the standard
Due to the backward spraying technology, large-capacity coarse mist spray, low utilization rate of pesticides, and poor control effect, in order to kill insects, farmers have to use pesticides to spray repeatedly, thus forming a vicious circle of "opium treatment". The worms are in the "medicine jars" from the small vesicles, and the crops are also fed by the "medicine" from an early age. There is no doubt that the pesticide residue exceeds the standard.
In order to enter the international market, China's agricultural products must meet a number of international indicators, of which pesticide residues are an important indicator. At present, based on self-determined standards, the average rate of food and pesticide in China is 6.2%, and the ratio will increase if compared with international standards. Therefore, the problem of pesticide residues in agricultural products has become one of the important obstacles for China's agricultural products to enter the international market. According to a United Nations statistics, China’s annual export of 7.4 billion U.S. dollars has been adversely affected.
3 productive poisoning often occurs
Chinese farmers use pesticides in a backward way. Pesticide water is sprayed on the crops. The drug-stricken people have to walk through the crops. Therefore, it may take only a few minutes for the clothes to be wetted by the pesticide water, and the atomizer is poorly atomized. The problem of “running, taking, dripping and leaking” is serious. The liquid medicine is easy to flow to the applicator, and the pesticide water floats in front of the eyes. Especially during the peak period of pesticide use from June to September, due to the hot weather, the clothes are thin. Productive poisoning often occurs.
4 The shortage of labor structure and the demand for advanced plant protection machinery
As a large number of rural laborers go to work in cities, the labor force engaged in agricultural production in rural areas is decreasing, which naturally pushes up the labor cost of agricultural production. In addition, the labor cost of migrant workers is higher than that of rural areas, making agricultural production unattractive. Farmers have to raise their labor costs to carry out agricultural production, but even then, when large numbers of pests and diseases break out, growers will still face the dilemma of not being able to meet people.
Moreover, if the price of agricultural products is high, there is still room for profit for farmers; if the prices of agricultural products are low, they can't make money or even lose money, many farmers will give up agricultural production. In addition, rural land transfer is accelerating, family farms, large planting households are increasing, the demand for pest control is growing, and traditional knapsack sprayers are difficult to adapt to the needs of large-area, sudden pest control.
Plant protection drones provide a completely modern solution to these problems. Spraying with a drone, saving time and effort, saving medicine (a flying control hand can hit 500 mu of land a day, saving 50% of the medicine), and can also implement group anti-group control in a short period of time, especially in the contiguous scale. In the process of farm application, pests and diseases can be prevented in time. At the same time, when using the drone spraying operation, when the liquid droplets are ejected from the sprinkler, the downward flow of the rotor is accelerated to form an aerosol flow, which directly increases the penetration of the liquid droplets on the crops and reduces the pesticide. The degree of loss, and increase the deposition and coverage of the liquid on the target crop, so that the "drug" and "water" are lowered, and the treatment effect is raised.
Due to the remote manipulation, the poisoning caused by long-time exposure to pesticides is reduced. In addition, in the case of a structural shortage of the young and middle-aged labor force and the continuous increase of agricultural labor costs, the development of plant protection drones must play an important role in the stable development of agriculture.

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October 17, 2021