What is biological control? Talking about the popular point

The use of natural enemy organisms, microorganisms and their derivatives to control pests and diseases is called biological control. Main content:

1) Use insect predators.

For example, the use of red-eyed bees to control lepidopteran pests such as cabbage worm, diamondback moth, Spodoptera litura, cabbage borer, cotton bollworm; Lacewings can prey on aphids, whiteflies, leaf mites and a variety of lepidopteran pest eggs and hatchling larvae; Cocoon bees control aphids, aphid wasps control mites, ladybugs, aphid-eating flies, hunting bugs, etc. For the natural enemies of these predatory insects, attention should be paid to the protection and utilization.

2) Microbial control.

Brassica moth (produced by Tiangang Bioengineering in Nanning, Guangxi), Bacillus thuringiensis (BT), Beauveria bassiana, and Metarhizium aeruginosa can control diamondback moth and cabbage worm; Insect viruses such as Spodoptera exigua karyopolyhedrovirus can control Spodoptera exigua; Cotton bollworm karyopolyhedrovirus can control cotton bollworm and tobacco green worm; Diamondback moth and cabbageworm granulosa virus can control diamondback moth and cabbageworm, respectively. Protozoa such as avermectin and microsporidia can control a variety of pests.

3) Biopharmaceuticals.

Agricultural antibiotics such as agricultural antibiotics 120 and polyantimycin can control cataplexy, downy mildew, powdery mildew, blight, black spot and blight; Jinggangmycin controls blight, white silk disease, sheath blight, etc.; Berberine, gentamicin, and noromycin control bacterial diseases such as soft rot, canker, bacterial wilt and bacterial spot disease; Qingfengmycin for the prevention and control of soft rot and bacterial spot disease; Agricultural antibiotics such as Qingfengmycin, Wuyimycin, polyantimycin and neophytomycin can prevent and control a variety of diseases; cucumber mosaic virus satellite vaccine S32 and tobacco mosaic virus attenuated vaccine N14 for the prevention and treatment of viral diseases; Plant-derived pesticides such as azadirachtin and libutrol solutions can reduce the damage of diamondback moth, Spodoptera exigua and whitefly; Marine, neem, nicotine, etc. have a certain control effect on a variety of vegetable pests; Insect hormones such as rice man, kakyak, and taibao can also control vegetable pests; The sex attractants of various hearteaters can trap their male adults and predict the emergence of adults.

It is the method of "treating insects with insects", some use natural enemies, some use hormones, some use competition, and some use parasitism.

Biological control is the use of one organism against another. Biological control can be roughly divided into three categories: insect control, bird insect control and fungus insect control. It is a way to reduce the population density of pests such as weeds and pests.

It takes advantage of the interrelationships between biological species to suppress one or another class of organisms against another. Its biggest advantage is that it does not pollute the environment, and it is incomparable with non-biological pest control methods such as pesticides. There are many ways to control biological control.

It's the way one creature is used against another.

It will not cause environmental pollution.

Due to the long-term use of chemical pesticides, some pests have developed strong resistance, and the natural enemies of many pests have been killed in large quantities, resulting in some pests being very rampant. Many kinds of chemical pesticides seriously pollute water, air and soil, and enter the human body through the food chain, endangering people's health.

Biological control uses the interrelationship between biological species to control pests and diseases of crops with one or a class of organisms. Its biggest advantage is that it does not pollute the environment and saves pesticide funds, which is incomparable with non-biological pest control methods such as pesticides.

Organisms used for biological control can be divided into three categories:

1. Predatory organisms, including lacewings, ladybugs, walking insects, teratosis, blunt mites, spiders, frogs, toads, mosquito-eating fish, forktail fish and many insectivorous birds.

2. Parasitic organisms, including parasitic wasps, parasitic flies, etc.

3. Pathogenic microorganisms, including Bacillus thuringiensis, Beauveria bassiana, etc. In China, the use of large red ladybug to control citrus blowing scale, the use of Beauveria bassiana to control soybean heartworm and corn borer, the use of golden bee to control overwintering red bollworm, and the use of red wasp to control cane borer have been successful.

Biological control refers to the use of certain insects, fungi, bacteria, viruses, protozoa, nematodes, predatory insects and mites, beneficial birds, fish, amphibians, etc. that can parasitize pests, and use antibiotics to control pathogenic bacteria, that is, to treat insects with insects, to treat insects with bacteria, to treat bacteria with bacteria, and to treat diseases with bacteria. The biggest advantage of biological control is that it does not pollute the environment, and it is incomparable with non-biological pest control methods such as pesticides. The use of biological control of pests and diseases does not pollute the environment and does not affect human health, and has broad prospects for development.

It will not cause environmental pollution.

Due to the long-term use of chemical pesticides, some pests have developed strong resistance, and the natural enemies of many pests have been killed in large numbers, resulting in rampant pests. A variety of chemical pesticides seriously pollute water, air and soil, and enter the human body through the food chain, endangering people's health.

Biological control is the use of the relationship between biological species, the use of one or a class of organisms to control crop diseases and pests. Its biggest advantage is that it does not pollute the environment and saves pesticide money, which is incomparable to non-biological pest control methods such as pesticides.

Organisms used for biological control can be divided into three categories:

1.Predatory organisms, including lacewings, ladybugs, walking insects, teratos, blunt mites, spiders, frogs, toads, mosquito-eating fish, catfish, and many insectivorous birds.

2.Parasites, including parasitic wasps, parasitic flies, etc.

3.Pathogenic microorganisms, including Bacillus thuringiensis and Beauveria bassiana. In China, red ladybug is used to control orange fruit fly, Beauveria bassiana is used to control soybean heartworm and corn borer, golden bee is used to control overwintering red cotton bollworm, and red bee is used to control sugarcane borer.

Difference Between Biological Control and Chemical Control:

The concept is different: biological control refers to the use of one organism against another organism, and chemical control is the use of chemical agents to control the harm of pests, diseases and weeds.

The advantages are different: biological control has less pollution, can protect the natural enemies of pests, reduce the amount of pesticides, and chemical control can effectively kill or inhibit pests, and improve the ability of crops to resist pests.

The disadvantages are different: the effect of biological control is slow, the insect population cannot be quickly suppressed when the pest density is large, and chemical control is easy to pollute the environment, produce pesticide damage, or make pests resistant.

In general, biological control compared with chemical control, it has many advantages, first of all, because it does not use chemicals, so it is not harmful to some animals and people in the area, relatively speaking, it is relatively safe, and it will not pollute the surrounding environment and bring inconvenience to people's lives.

Secondly, people should know that if the same pest or pest has been used with the same drug, they are easy to develop resistance, but if biological control is used, there will be no such problem, and there will be no non-standard use of drugs, which not only kills pests but also harms the plants to be protected.

Biological control is the use of organisms and their metabolites to control plant pathogens, pests and weeds. It is a research on the use of natural enemy control, the essence of which is to use the relationship between organisms and the relationship between species and the elderly to regulate the population density of pests, that is, the biota to control the biota.

Biological control mainly includes four aspects: 1. Insect control, that is, the use of predatory and parasitic insects such as aphid lions, lacewings, parasitic wasps and ladybugs to control pests; 2. Biological insect control with micro-calendar, that is, the use of insect pathogenic microorganisms such as bacteria, limbs, lead, fungi, viruses, etc. and their metabolites to control pests; 3. Biological control of plant pathogenic bacteria, that is, the use of microorganisms or their metabolites to prevent and control plant pathogenic bacteria; 4. Biological control of weeds, that is, the use of herbivorous insects and pathogenic bacteria parasitic on weeds to control weeds.