Professor Huang Lili's team overcomes the problem of prevention and control of kiwi ulcer disease

"I'm not afraid of ulcers anymore.
" in mid-August in the drizzle, standing in their own 120 acres of kiwi garden, Mei County Tangyu town fruit farmer Yang Nai-qian to the visitors loudly.
for all kiwi farmers, ulcer disease used to be the "cancer" they smelled of.
, Yang is not afraid because of the use of our school's School of Plant Protection Professor Huang Lili team research results.
kiwi is rich in vitamin C and belongs to the fruit tree with high output value in the economic forest.
, located in the northern part of Qinling, because of the superior natural conditions, kiwi cultivation scale expanded rapidly.
Zhao Yingjie, deputy director of the fruit industry center in Mei County, said that in the spring of 2009, when the ulcer disease broke out, mei county orchards "the disease rate is 30%, 90% of the heavy, the masses tear saw branches cut down trees."
" kiwi tree infected with ulcer disease, there will be leaf spots, flower rot, trunk ulcer pus and other symptoms, which eventually lead to the death of the branched tree.
the disease was first reported in the world kiwi growing areas in 1980, the earliest reported in China in 1985.
Kiwi tree trunk ulcer kiwi leaf ulcer leaf plaque because do not understand the root cause of the ulcer disease epidemic, Zhou to, Mei County and other large-scale cultivation of kiwi earlier areas of fruit farmers can only see a large number of trunks in the spring when the frequent spraying of various pesticides, or scraping medicine treatment, or cut off dead branches, to the root of the seedlings after grafting new branches.
treatment, ulcer disease panic throughout Shaanxi kiwi-producing areas pervaded.
Huang Lili's team was called in to carry out investigation and research on ulcer disease.
" all year round, walked through the villages and villages of Mei County.
" Mei County Plant Protection Station, former deputy station director, deputy director of the Agricultural Technology Center Zhu Yuan layer said that in a number of provincial and ministerial-level scientific research projects, the team jointly with Shaanxi Province Rural Science and Technology Development Center, Shaanxi Province Plant Protection WorkStation and other units after more than 10 years of research, and finally uncovered the mystery of ulcer disease.
team found that kiwi ulcer disease is caused by bacteria.
team for the first time expounded the disease-caused bacteria of kiwi ulcer disease in China for lilac fake monocytobacteria kiwi disease-caused variant 3, took the lead in revealing the disease in China's kiwi main production area of the epidemic law, and changed passive treatment to active prevention, put forward the "two first two after" precision drug control strategy, but also to Shaanxi as the center, in the national kiwi planting area to establish a demonstration point for prevention and control technology.
" flowering before flowering after the whole tree spray 2 times to prevent and control flower rot and leaf spots, after fruit harvesting to leaves before spraying with liquid spray or brush tree trunk 2 times.
"two first two after" content, Meixian Qifeng fruit industry 64-year-old technician Yu Shengrong introduced, his use of this method to practice disease prevention efficiency of more than 90.
, the overall effect of kiwi ulcer disease prevention and treatment in Meixian County reached more than 85%, and the incidence rate was controlled at less than 3%.
Yang Nai qian, Yin Shengrong and many other demonstration households are also invited as "experts" to the province and outside to guide the prevention and treatment of ulcer disease.
In the past three years, the team around the kiwi ulcer disease green prevention and control technology training technicians and fruit farmers accumulated more than 10 million times, demonstration and promotion of 1.85 million mu, to recover production of nearly 370,000 tons, increase revenue and savings accumulated more than 1.5 billion yuan, for China's kiwi industry healthy and sustainable development provides a strong technical support.
May 18, experts from the Science and Technology Development Center of the Ministry of Agriculture and Rural Affairs identified the achievement as innovative and widely applied, reaching the leading level of similar research in the world as a whole.
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