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present situation and Prospect of Grub Control in Sweet Potato Field

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Plant Diseases and Pests 2015年第2期6卷 1-4,15页

作者： Yan Hui Xue Cheng Li Qiang Zhang Yungang Xuzhou Sweet Potato Research Center/Key Laboratory of Sweet Potato Biology and Genetic Breeding Ministry of Agriculture/Sweet Potato Research InstituteChinese Academy of Agricultural Sciences Xuzhou Vocational College of Bioengineering

Grub is one of the major pests affecting yield and quality of sweet potato. Although traditional chemical pesticides have quick effect, the disadvantages of high toxicity, strong pest resistance, and heavy pollution hinder the development of modern ecological agriculture, while physical means such as light trapping, sex pheromone method and biological control methods are more safe and lasting compared with chemical means. To provide reference and guidance for grub control and sweet potato production, the control methods against sweet potato grubs are comprehensively explored, and strategy and prospects of using biological technology to control pests are analyzed.

关键词： Sweet potato Grub Biological control present situation Prospect

Management present situation and countermeasures of coal mines safety in production

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Journal of Coal Science & Engineering(China) 2008年第2期14卷 326-328页

作者：张树东于常武 College of Resource and Environmental Engineering Liaoning Techinical UniversityFuxin 123000China College of Material and Chemistry Liaoning University of TechnologyJinzhou 121001China

Analyzed of the present situation of Chinese coal mines safety in production and the reasons for coal mining accident,and realized the coal mines safety in production, which should increase the legal safeguards of coal mine safety in production,and safety input,established the comprehensive coal mine safety evaluation system,comprehen- sively enhance quality of coal mine workers,established and improved early warning me- chanism of safety production of coal mine.

关键词： coal mine safety countermeasures present situation management

present situation and Benefit Analysis of the Straw Recycling in Southwest China

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Asian Agricultural Research 2010年第2期2卷 40-44页

作者： GAO Xue-song ZENG Min DENG Liang-ji ZHONG Chang-biao Resources and Environment Institute Sichuan Agricultural UniversityYaan 625014China Key Laboratory of Land Information in Sichuan Province Yaan 625014China Faculty of Business Ningbo UniversityNingbo 315211China

Currently,sustainable agricultural development in China is facing some big challenges of how to promote the present developing pattern,to lengthen material transformation chain,to increase the utilization rate of material and energy in agricultural system and to form a healthy agricultural ecological circulation *** is a major country producing crops and *** high-efficient utilizing pattern of straw and technological system are needed *** to the field survey,we point out the status of straw utilization and the main recycling pattern in typical farming areas in Sichuan,China through the literature review and data *** on the statistical analysis,the economic,environmental and social benefits of each utilization way are analyzed,and the methods and measures are proposed in order to promote recycling utilization of the straw in Sichuan farming area,and to offer theoretical guidance for energy saving,food safety,and pollution control.

关键词： Straw utilization present situation Benefit Sichuan China

Traditional Chinese Medicine Treatment of Paroxysmal Nocturnal Hemoglobinuria—— present situation and Prospect

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Chinese Journal of Integrative Medicine 1999年第3期5卷 231-236页

作者：季元张之南 Peking Union Medical College Hospital Beijing

Survey and Analysis on present situation of Biological Experiment Teaching in Some Middle Schools in Yangjiang Area

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Asian Agricultural Research 2021年第5期13卷 53-56页

作者： Sainan LI Haoyao WU Yina LU Liping ZHOU Department of Biology Zhaoqing UniversityZhaoqing 526061China

Experimental teaching is an important part of biology teaching in middle *** the form of questionnaire,this paper conducts a survey on some leading teachers of biology in the middle schools in the Yangjiang area about the biological experiment teaching in the implementation of the new curriculum,and analyzes the results of the *** problems and deficiencies in the implementation of biological experiment teaching in some middle schools in this area are found,and the relevant reform measures and suggestions are put forward in order to promote the better development of biological experiment teaching in middle schools.

关键词： Biological experiment teaching in middle school present situation Questionnaire survey Analysis

The Taiyuan Lianhualao History and the present situation, Problems and Thinking

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Review of Global Academics 2014年第5期1卷 376-378页

作者： Liu Fang Art College Taiyuan University of Scienceand Technology Taiyuan Shanxi

Taiyuan lian hua lao is the local of unique Shangcun of Tai Yuan in Chinese folk rap art breed, it is not a matter cultural heritage directory so far by column for Shanxi Province in 2006. This paper describes the development of Taiyuan Lian hua lao from the aspects of present situation, problems and thinking, then puts forward the relevant suggestions.

关键词： taiyuan lianhualao present situation problems thinking

Investigation of present situation of Urban Road Traffic in Nanchang City and Countermeasures

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Journal of Landscape Research 2017年第1期9卷 1-4,7页

作者： ZENG Yan MIN Zhongrong XU Wei YU Zhenya Jiangxi Normal University

The present situation of urban road traffic in Nanchang City was surveyed systematically from the present situation of the road structure,characteristics of trafficvolume,residents' trips,etc.,then the existing proble... 详细信息

关键词： Nanchang City Road traffic present situation Investigation

present situation and countermeasure of low-alloy spring steel wire rod for domestic automobile

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Baosteel Technical Research 2010年第S1期4卷 60-页

作者： XING Xianqiang Sinosteel Zhengzhou Research Institute of Steel Wire Products Co.,Ltd., Zhengzhou 450001,Henan,China

The variety,inner quality and surface quality of low-alloy spring steel wire rod for domestic automobile is summarized in *** according to commercial low-alloy spring steel wire rod variety, product quality level and its actual application situation on automobile supplied by present industrially developed country metallurgy enterprises,it is pointed that the variety of low-alloy spring steel wire rod for domestic automobile can't satisfy the requirements of automobile industry development,compare with overseas advanced technology,product quality has the following gaps:the first is that steel purity is low,the control level of non-metallic inclusions is not steady,there is often large grain difficult deforming non-deformation inclusions existing,the control level of steel purity has big difference,the level of large steel factory is high,but its steady has a large gap compare with foreign advanced level,not to mention small steel factory which research and development powder is *** second is surface complete decarburization can' t be avoided *** third is that surface defects are *** fourth is that composition segregation and structure segregation are not steady,steel wire can't be drawn normally when the segregation is serious. In all,the segregation of 55SiCrA is superior to 60Si2MnA *** industrialization of domestic high level low-alloy spring steel wire rod can't seek quick success and instant benefits,independent innovation perseveringly must be adopted,the success may be reached after master core technologies and adopt the science way of step by step.

关键词： automobile low-alloy spring steel wire rod present situation countermeasure

The present situation and Development Countermeasures for Meat Products Industry in Henan

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Agricultural Science & Technology 2011年第8期12卷 1245-1248页

作者：欧阳华澍王国贞娄鹏雁王东栋苗双双陈献文河南城建学院团委河南平顶山467036 河南城建学院环境与市政工程系河南平顶山467036 双汇集团河南漯河市462003 河南城建学院生物工程系河南平顶山467036 河南省平顶山市环保局河南平顶山467021

This paper introduces the development and present situation of meat industry in Henan Province so as to get comprehensive understanding of this industry,including the advantages and insufficiencies of this industry,and then puts forward some countermeasures for the future development of the meat products of Henan Province,to realize the rapid,healthy and sustainable development of meat industry in Henan and create huge economic and social benefits in Henan.

关键词： Henan Province Meat products industry present situation Development countermeasures