On August 20-21, the "Zhejiang Tea Garden Chemical Fertilizer Pesticide Reduction and Efficiency Enhancement Technology Integration Research and Demonstration" project on-site exchange meeting was held in Wuyi County, Zhejiang Province. The head of Zhejiang tea department, the representative of tea leading enterprises, project experts, and technical backbones, etc. A total of more than 90 people participated in this on-site meeting. Researcher Ruan Jianyun, deputy director of Tea Research Institute of Chinese Academy of Agricultural Sciences, researcher Chen Hongjin, director of Zhejiang Farmland Quality and Fertilizer Management Station, researcher Lu Debiao of Zhejiang Agricultural Technology Extension Center, director of Wuyi County Agriculture and Rural Bureau Wang Yuewei and other leaders were invited to attend. The meeting was hosted by Anhui Province. Liao Wanyou, researcher of Tea Research Institute of Academy of Agricultural Sciences, chaired.
At the exchange meeting, researcher Ruan Jianyun, deputy director of the Tea Research Institute of the Chinese Academy of Agricultural Sciences, introduced the project to the participants and explained the meaning of "double reduction": without reducing the yield and quality of tea, the realization of excess fertilizer and pesticide Reduce the quantity, improve the quality and safety of tea, improve the environment, and increase the income of tea farmers.
Researcher Chen Hongjin, the director of Zhejiang Farmland Quality and Fertilizer Management Station, introduced the comprehensive promotion of fertilizer reduction and efficiency in Zhejiang Province, and promoted the high-level green development of agriculture.
Director of Zhejiang Tea District, Dr. Ma Lifeng, and some technical backbones introduced the technology model and related research progress of chemical fertilizer reduction and application of fertilizers and pesticides in Zhejiang tea gardens. The participants actively interacted and discussed the applicability of various technology model settings and the prospects for promotion and application.
How to lose weight and how to improve fat effect? Dr. Ma Lifeng gave suggestions: use a series of technical approaches and modules to achieve precise fertilizer dosage, adjust fertilizer structure, replace organic fertilizer with some fertilizers, improve fertilization methods, and support soil acidification, such as using tea tree fertilizers and new fertilizers. Fertilizers; the use of mechanical fertilization, water and fertilizer integration and other efficient fertilization methods, etc., and ultimately achieve a significant improvement in soil quality and environmental conditions.
Regarding the issue of pesticide reduction, Dr. Li Zhaoqun of the Tea Research Institute of the Chinese Academy of Agricultural Sciences believes that it is possible to replace purely relying on pesticides through forecasting, digital swatches, narrow-wave LED insecticidal lamps, pest pheromone and other agricultural comprehensive control technologies, and finally achieve pesticide Reduce the quantity and quantity of pesticide residues in tea.
The “Zhejiang Tea Garden Chemical Fertilizer Pesticide Reduction and Efficiency Enhancement Technology Integration Research and Demonstration” project addresses the problems of large quantities of chemical fertilizers, low organic fertilizer replacement ratios, low use of special formula fertilizers, and low fertilizer utilization rates in Zhejiang tea gardens. Through research on the nutrient absorption characteristics and nutrient cycling laws of the main teas, key technologies such as total tea nitrogen control, suitable nutrient distribution ratio, organic nutrient substitution, and water-fertilizer integration have been integrated to form an "organic fertilizer + tea tree" 6 sets of chemical fertilizers such as "special fertilizer", "organic fertilizer + new type fertilizer (nitrification inhibitor)", "special fertilizer for tea tree + acidification improver", "biogas fertilizer + special fertilizer for tea tree", "organic fertilizer + water and fertilizer integration", and "special variety tea tree fertilizer" The technology model of reducing fertilizer and increasing efficiency was carried out in Wuyi, Shaoxing, Fuyang, Anji, Jiande, Tiantai, Lanxi and other places of Zhejiang Province. The experiment showed that chemical fertilizer was reduced by 23% to 75%, tea yield was increased by 3.3% to 19.5%, and nutrient utilization rate of new shoots was improved 0.5% to 7.8%, the total amino acid increased by 0.01% to 0.47%, the sensory quality of the finished tea has been improved, and the efficiency has been increased by 995 to 1497 yuan per mu. Environmental conditions have improved significantly.
Aiming at problems such as the lack of efficient and harmless control technology in Zhejiang tea gardens, the large use of chemical pesticides, and the high potential risks of tea safety, the occurrence rules of major pests such as gray tea ruler, tea ruler, tea leafhopper, etc. were studied, and integrated prediction and forecasting technology was studied Natural enemies-friendly technologies such as sexual trapping, narrow wave light trapping, and digital two-color swatch trapping, screen out biological pesticides such as plant and microbial sources, and highly efficient and low water-soluble pesticides to form Zhejiang tea garden gray tea ruler, tea ruler, tea green leaf The chemical pesticide reduction application technology model for cicada and other major pests was tested and demonstrated in Wuyi, Shaoxing, Anji, Jiande, Suichang, Xinchang and other places in Zhejiang. Chemical pesticide reduction was reduced by 30% to 90%, and tea yield was increased by 3.4% to 19.3. %, An increase of 198 to 1477 yuan per mu, and the types and residues of tea pesticide residues in the demonstration area have been greatly reduced, and some of them have reached the export EU standards.
The on-site meeting was jointly hosted by the Tea Research Institute of the Chinese Academy of Agricultural Sciences and Zhejiang Arable Land Quality and Fertilizer Management Station, and co-organized by Wuyi County Agriculture and Rural Bureau. The convening of the conference has promoted communication and exchange between topics, and has played a better role in furthering the demonstration work of the "double reduction" technology model.