The level of scientific research and application in the field of biological control technology in China.

"The pests that attack trees in the park can be divided into three types of decay, leaf, sting, we have a special natural enemy to deal with the disease, but to pest control can not 100% let the pest extinction, because let a species (even pests) extinction will also bring disaster;
" in an interview with Science and Technology Daily, said Zheng Li, director of the National Alliance for The Innovation of Insects.
" This year, Beijing's parks are expected to release nearly 650 million natural enemy insects, used to control pests, the largest number in a calendar year.
Summer Palace, Temple of Heaven, Zhongshan, Jingshan and other ancient trees and many other parks put a relatively large amount of place.
" June 12, the "bug-control" news attracted Zheng Li's attention.
immersed in the "worm-control" green prevention and control of scientific research for decades, he is too aware of the significance of this news, "when more and more chemical pesticides 'exercise' out of the pest resistance, resulting in the drug residue exceeded the standard, to insect control bacteria will highlight its unique advantages."
, for example, that red-eyed bees can live and breed on pest eggs, build up and expand populations and maintain a constant suppression of the source of pests.
" China's biological control technology field of scientific research level Zheng Li told reporters that the park erosion of trees pests can be divided into three categories: "the first is stem pests, such as beijing's release of velvet armor, swollen leg bees, is to deal with a stem-like pests - tianbu; There are super-healthy (a winter female breeding up to 200 million offspring a year), super can eat (3-4 days can eat a tree leaves, super can escape, group crime and so on;
"When more and more enemy insects, pests are not enough, these predators will become another pest? "It's impossible.
" Zheng Li said that predators have a unique nature of food, when the pests are abundant, they because of the abundance of food to speed up the reproduction;
" Zheng Li said, as the world's "nose" with insect control technology, China as early as about 300 A.D. there is a record of insect control, "when the southerners use the raw ferocity of yellowants to prey on a variety of pests."
" Even now, China's scientific research level in the field of biological control technology has remained in sync with the world's advanced level.
the current situation of the application of biological control technology in China often clustered in leaf buds, buds "for non-rogues", often caused leaves and branches withering, and even caused the whole branch, the whole plant dead blowing is a major pest.
our scientists introduced Australian ladybugs from Australia to take the blow-up female adult insects, thus becoming a sample of insects.
in Zheng Li's view, whether imported from abroad, or moved in from different regions, natural enemy insect breeding technology is not simple.
" after a lot of investigation, screening, identification, we must choose the natural enemy resources in the natural world, at the same time, domesticate them, so that it better adapt to the environment.
" he gave the example, some natural enemies may be from the high temperature, high humidity of the south into the north of the low temperature, dry environment, how to improve, so that natural enemies quickly adapt, testing the scientific researchers.
Beijing's park to test water to pest control is a good example, but in the current domestic attempt is still too little.
this, the reporter interviewed Zheng Li, Shandong Academy of Sciences biopesticide expert Yang contract, Shandong Provincial Institute of Pesticides Dean Li Dejun, got the answer is similar: relative to the effect of short and flat chemical pesticides, "to pest control" prevention and control technology in the country is not delicious.
" now has more than 3000 chemical pesticide factories in the country, natural enemy insect development enterprises no more than 20;
" Zheng Li provided this set of data shows that, compared with the world's advanced level, although China's biological prevention and control technology in scientific research does not fall wind, but on the road of industrialization has fallen.
for the grass-roots promotion, Zheng Li found that deep-rooted planting management habits and lack of understanding of the principles of biological control, so that people find it difficult to believe the effects of biological control, more afraid to try easily.
three years ago, the Ministry of Agriculture issued the "Zero Growth Action Plan for Pesticide Use by 2020", which is undoubtedly good news for the bio-prevention and control industry, but Zheng Li believes that the pesticide market solidified interest chain, so that local governments, enterprises difficult to have the motivation to biological prevention and control transformation.
" Beijing has made efforts to test local governments and enterprises with policies and funds to support bio-prevention and control.
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