"Fighting insects with insects" Chongqing's treatment of pests will not damage the ecological balance

Guan Yubing

In order to prevent crops from being infested with pests. Chongqing's Bishan District adopts the method of "using insects to overcome insects", that is, raising natural enemies of agricultural pests and insects, while reducing environmental pollution caused by pesticides through biological control, and improving the safety of agricultural products. Recently, the person in charge of Kairui Agriculture, who developed this project, said that by 2020, the company will produce 50 million to 100 million natural enemy insects, which can radiate 100,000 mu of facility agriculture.

The method of "treating insects with insects" has existed in ancient China. In volume 24 of the Great Northern Song Dynasty scientist Shen Kuo's monumental work "Mengxi Pen Talk", it is recorded: "In Yuanfengzhong, Gyeongju gave birth to a child, Fang Worm, and Fang was the harm of Akita. Suddenly, a worm is born, such as a dog scorpion in the soil, whose beak has pincers, and it is thousands of hidden; when it encounters a child, it is beaten with pincers, which are divided into two sections. The days are over, and the years are long. In today's words, it is that the use of "unwillingness" not only eliminates the "sub-square insects", but also makes the crops harvested.

Sub-square insects, now known as armyworms, harm wheat, corn, sorghum, rice and other crops. Pong, that is, "side", next to; pong refuses, meaning that there is no pest next to this worm. Exactly what kind of worm is referred to, it is difficult to test. However, it can be explained that the ancients already had the awareness of biological control, using the natural enemies of some crop pests to eliminate insect pests and promote agricultural production.

The ancients "treated insects with insects" because of the backwardness of science and technology, and there were no more prevention and control methods. Moreover, this kind of prevention and control lacks operability and controllability. Today, we re-mention the phrase "insects to overcome insects" because people recognize the harm of drug control and because consumers need green agricultural products.

The first advantage of "insects to fight insects" is that it can improve the safety of agricultural products and meet consumers' demand for green food. The safety of agricultural products is directly related to food safety; "the people take food as the sky, food takes safety as the first", and concerns about food safety are affecting the development of China's agriculture and food industry. The pursuit of green agricultural products is becoming the mainstream consumption behavior, and the market space is extremely broad.

The advantage of "insects to overcome insects" is that it can effectively reduce environmental pollution. Pesticides and their degradation products in the natural environment, polluting the atmosphere, water and soil, can damage ecosystems, and even cause acute or chronic poisoning of people, animals and plants. How to reduce pesticide pollution has become a problem that must be solved. It is timely to study and promote biological control methods of "insects to overcome insects".

Third, the biological control method of "using insects to fight insects" can promote agricultural production. "Years to big", that is, to emphasize its role in increasing production. Biological control methods are also in line with the laws of nature. Sustainable development, in essence, is not only to achieve harmonious coexistence between man and nature, but more importantly, it is "Taoist nature" to promote social and economic development in a way that conforms to nature.

The biggest concern about the "insect-to-insect" approach is whether the beneficial insects raised in captivity will disrupt the ecological balance. Judging from the report, because the breeding is a local insect, after they eliminate a large number of pests, due to the lack of food and the presence of natural enemies, the population will return to normal and will not have a negative impact on the ecological environment, which solves people's concerns. Another problem is the cost of biological control, which affects the choices of businesses and farmers. Judging from the ladybugs that have been put into use, the cost is slightly higher than the cost of pesticide control. If we take into account the cost of removing pesticide residues and reducing the value added of green agricultural products, these costs obviously far outweigh the losses.

Therefore, it is of great and far-reaching significance to explore and popularize the method of "fighting insects with insects" in depth.