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At the first International Conference on Biological Prevention and Control, which is being held here, Qiu Dewen, deputy director of the Plant Protection Institute of the Chinese Academy of Agricultural Sciences, revealed that with the deepening of the state's supply-side structural reform of grain and agricultural productquality, as well as the implementation of the zero-growth programme of pesticides in 2020, the biological control of diseases and grasses in farmland has become the focus of research and development of agricultural science and technology in the next decade, of which, known as "biological missiles", insect infotines and insect viruses with precise control functions, have shown good application prospects in recent years.
Qiu Dewen introduced, the so-called biological control, is the use of natural nature already exists living or living metabolites to control pests and diseases, such as the traditional pest control, bacteria to treat insects, etc. ;
because chemical pesticides are synthetic, nature has no relevant enzymes to degrade it, the formation of residues, and biological control of the active energy from nature, there are specific enzymes can degrade it, so no residue toxicity.
he further explained that insect pheromones only work on insects of the same species, and are generally non-toxic to humans, wild animals, natural enemy insects, etc., and are trusted because of their high degree of individuality, low use, and better results when population density is low, and long-term use does not produce resistance.
the current insect pheromones are mainly used in insect monitoring and control to control pests and reduce the density of insect mouths.
insect viruses are highly parasitic, most viruses are limited to a branch or one genus of parasitic insects, safe for non-target insects and natural enemy insects;
it is known that more than 1600 kinds of insect viruses have been found in more than 1,100 kinds of insects in the world, and its host is involved in 11 species of insects, and China has isolated more than 240 insect viruses from 196 species of 195 species of 7 eye 35.
from 1993 the first insect virus insecticide cotton bellworm nuclear virus product registration so far, the domestic has more than a dozen products have been registered, for pest biological control of insect viruses are mainly rod-like virus sypriated virus (NVP), particulate virus (PXGV) and mass polykeragomavirus (CVP), mainly used in small leeks, beet ferrets, cotton bellworms, silver yinn night control.
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