检索结果-南通市图书馆

Occurrence Characteristics,Prevention and Control of pests and diseases of Tropical Outdoor Cultivated Rosa chinensis

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Plant diseases and pests 2014年第6期5卷 19-21,28页

作者： Lin Hengmi Xu Huiqiu Zhang Hailiang Qiao Shunfa Hong Shiyang Zhang Yilei Li Jingtian Chen Xingyu Sanya Land Seed Co. Ltd.

According to the hazards and occurrence characteristics of major diseases of Rosa chinensis, such as powdery mildew, branch canker and black spot, and major pests such as mites, aphids, thrips and Lepidoptera, prevention and control of the diseases and pests should be based on pruning, garden cleaning, water and fertilizer management, and chemical control can be applied as the supplement. Suitable prevention and control measures should be adopted for preventing the disea- ses and pests scientifically.

关键词： Rosa chinensis pests and diseases Occurrence characteristics Prevention and control

Investigation on Major pests and diseases of Fluecured Tobacco in Shibing County,Guizhou Province

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plant diseases and pests 2015年第1期6卷 15-18,21页

作者： Chen Jie Yang Jing Xiao Ciping Long Shengxian Yang Changyi Huang Qingzhong Shao Mei Shibing Branch of Qiandongnan Tobacco Company Zhenyuan Branch of Qiandongnan Tobacco Company

The tobacco pests and diseases in major flue-cured tobacco production areas of Shibing County were investigated, and the corresponding control counter- measures were put forward. The results showed that the common pests and diseases, such as tobacco aphid, tobacco budworm, TMV, CMV, PVY, bacterial wilt and black shank, had occurred in flue-cured tobacco production in Shibing County.

关键词： Tobacco pests and diseases Investigation

Occurrence Dynamics and Control Strategies of Major pests and diseases of Sugarcane in Yunnan

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Agricultural Science & Technology 2017年第12期18卷 2490-2494页

作者：李文凤张荣跃单红丽尹炯王晓燕罗志明黄应昆云南省农业科学院甘蔗研究所云南开远661699

In recent years, the occurrence and harm of many kinds of pests and diseases have become increasingly serious in Yunnan sugarcane areas, which have greatly affected the sustained and stable development of sugarcane production, so the situation of their prevention and control has become rigorous. In order to scien- tifically and effectively prevent and control pests and diseases of sugarcane to en- sure the safety of sugarcane production, on the basis of an investigation and re- search, according to the present situation of sugarcane production in Yunnan, the occurrence dynamics of major pests and diseases of sugarcane were analyzed, and corresponding control strategies were proposed according to the major pests and diseases as well as their occurrence and damage characteristics.

关键词： Yunnan sugarcane areas Sugarcane pests and diseases Occurrencedynamics Control strategies

Occurrence and Epidemic Dynamics and Accurate Prevention and Control of Important Sugarcane pests and diseases in the Sugarcane Areas of Yunnan

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Agricultural Biotechnology 2018年第5期7卷 148-152页

作者： Wenfeng LI Rongyue ZHANG Hongli SHAN Xiaoyan WANG Jiong YIN Zhiming LUO Jie LI Xiaoyan CANG Yingkun HUANG Sugarcane Research Institute Yunnan Province Academy of Agricultural Science

Based on investigation and research, according to the current actual production of sugarcane, the occurrence dynamics and outbreak causes of important pests and diseases that seriously affect sugarcane production were summarized, and accurate and efficient green prevention and control technology was put forward according to the occurrence and damage characteristics of important pests and diseases, such as strengthening sugarcane introduction and quarantine, breeding and selecting varieties resistant to diseases and pests, promoting the use of detoxified healthy seedlings vigorously, applying lamp trapping technology on a large scale, scientifically guiding and promoting biological prevention and control technology, practically promoting the precise and efficient application of slow-release long- acting and low toxic pesticides, strengthening field management, spraying pesticides in time at the early stage of a disease, and doing a good job of monitoring and emergency prevention and control of sudden pests.

关键词： Sugarcane areas of Yunnan Sugarcane pests and diseases Epidemic dynamics Accurate prevention and control

An app to assist farmers in the identification of diseases and pests of coffee leaves using deep learning

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Information Processing in Agriculture 2022年第1期9卷 38-47页

作者： Jose G.M.Esgario Pedro B.C.de Castro Lucas M.Tassis Renato A.Krohling LABCIN-Nature Inspired Computing Federal University of Espirito SantoAv.Fernando Ferrari514CEP 29075-910 VitoriaEspırito SantoESBrazil LABCIN-Nature Inspired Computing and PPGI-Graduate Program in Computer Scienceand Production Engineering DepartmentFederal University of Espirito SantoAv.Fernando Ferrari514CEP 29075-910 VitoriaEspırito SantoESBrazil

In recent years,deep learning methods have been introduced for segmentation and classi-fication of leaf lesions caused by pests and *** the commonly used approaches,convolutional neural networks have provided results with high *** purpose of this work is to present an effective and practical system capable of seg-menting and classifying different types of leaf lesions and estimating the severity of stress caused by biotic agents in coffee leaves using convolutional neural *** proposed approach consists of two stages:a semantic segmentation stage with severity calculation and a symptom lesion classification *** stage was tested separately,highlighting the positive and negative points of each *** obtained very good results for the severity estimation,suggesting that the model can estimate severity values very close to the real *** the biotic stress classification,the accuracy rates were greater than 97%.Due to the promising results obtained,an App for Android platform was developed and imple-mented,consisting of semantic segmentation and severity calculation,as well as symptom classification to assist both specialists and farmers to identify and quantify biotic stresses using images of coffee leaves acquired by smartphone.

关键词： Convolutional neural networks Semantic segmentation Coffee leaf pests and diseases App.development

Main diseases and pests of Lonicerae japonica in Guangxi Province and Fluctuation Pattern of Their Natural Enemies

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plant diseases and pests 2011年第3期2卷 31-34,38页

作者：欧善生苏桂花谢恩倍覃连红简峰黄雪兰石化玉黄奉茂陈彩贤王小欣黄艳花广西农业职业技术学院广西南宁530007 广西壮族自治区忻城县科学技术情报研究所广西忻城546200

[ Objective ] The paper was to study the main diseases and pests in Lonicerae japonica in Guangxi Province and fluctuation pattern of their natural ene- mies. [Method] The population change of main diseases and pests, and main predatory naturaI enemies of pests in different species of Lonicerae japonica in Xincheng County of Guangxi Province were systematically investigated during 2008 -2010. [ Result ] The variation cycle of population number of Semiaphis heraclei （Takahashi） belongs to single peak type, and it has large occurrence in April. The variation cycle of population number of Franklinlella sp. and Haptonchus luteo- ius （Erichson） belongs to double peak type, and they have large occurrence at April and September. The variation cycle of disease severity of Microsphaera lonicerae （ Wint. ） belongs to double peak type, and the disease index will be larger at April and September. The variation cycle of diseased shoot rate belongs to single peak type; diseased shoot rote of Lonicera dasystyla Rehd. and Loniccra hvpolzlauca Miquel is relatively high during April to June, while the index of Lonice- ra confusa （Sweet） DC. is relatively high during February to May. The variation cycle of population number of main natural enemies such as Lemnia biplagiata （ Swartz）, Coccinella septcmpunctata （ Linnaeus ） and Harmonia axyridis （Pallas） belongs to double peak type, and they have large occurrence at April and Sep- tember. [ Conclusion] The results could provide scientific basis for determination of optimum control period against major diseases and pests in Loniceraejaponica and development of integrated control programs.

关键词： Lonicerae japonica pests and diseases Enzyme Fluctuation pattern China

Identification of Common Maize diseases and Their Prevention and Control Methods

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Agricultural Biotechnology 2022年第2期11卷 38-42,47页

作者： Xiaochun HUANG Huihui CAO Ruihuan DU Yajing WANG Shuhong ZHANG Liwu HAO Yanpo YAO Chaohui LI Jinwen ZHANG Tangshan Food and Drug Comprehensive Testing Center Tangshan 063000China Hebei Agricultural Products Quality and Safety Testing Innovation Center Tangshan 063000China Tangshan Institute of Functional Agricultural Product Industrial Technology Tangshan 063000China

Agriculture is the basic industry of China's economic development,and maize is an important part of the agricultural *** the increase of global environmental warming and industrial pollution,as well as the adjustment of agricultural planting structure and the transformation of farming and cultivation methods in China,the breeding of maize varieties has been accelerated,and the planting area has increased rapidly,resulting in the condition that the occurrence of maize diseases and pests has been *** damage of some minor diseases continued to increase nationwide or in local areas,and rose to major diseases,and some new diseases appeared in production,posing a threat to the safe production of *** paper summarized the occurrence status of important maize diseases in China,and put forward corresponding prevention and control countermeasures.

关键词： Maize Disease control Maize yield pests and diseases Control measures

Study on Planting and Cultivation Techniques of Polygonatum

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Agricultural Biotechnology 2022年第3期11卷 106-108页

作者： Lingyu DENG Piaoling HUANG Si LIN Fengfeng XIE Hua ZHU Guangxi University of Chinese Medicine Nanning 530200China Key Laboratory of Zhuang and Yao Medicine Guangxi University of Chinese MedicineNanning 530200China School of Chemistry and Chemical Engineering Guangxi Minzu UniversityNanning 530006China

Polygonatum is a food having the concomitant function of both medicine and *** is relatively common in the tonic medicinal material market and is a common bulk medicinal material in *** of its good medicinal value and health care value,its artificial cultivation has become a hot topic,in order to increase market *** cultivation techniques of Polygonatum were discussed and analyzed by collecting and consulting data,as well as practical investigation.

关键词： Polygonatum Cultivation pests and diseases