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| 1 | Effect of aerial spray adjuvant applying on the efficiency of small unmanned aerial vehicle for wheat aphids control显示文摘Small unmanned aerial vehicles(UAVs)have been widely used in different aspects of modern farming management,including pest and disease control in China in recent years.In this study,the spray performance of a small plant protection UAV at low volume spray was evaluated by adjusting the pesticide dosage and adding aerial spraying adjuvants.Droplet deposition,droplet density,coverage,control effect and pesticide residue from field trials were assessed.In addition,the residue and control effect of UAV spray were compared to manual knapsack at high volume spray.The results showed that,the adjuvant applying improved the efficiency of UAV spray.Also,the adjuvant applying reduced the dosage of imidacloprid by 20%.However,there was no significant difference on initial residue between UAV spray and knapsack spray.Thus,plant protection UAV spraying pesticide by adding appropriate adjuvant showed the ability of improving the pesticide effectiveness by improving the control efficiency,reducing the pesticide dosage and residue. | Yanhua Meng Yubin Lan Guiying Mei Yongwang Guo Jianli Song Zhiguo Wang | 2018 | International Journal of Agricultural and Biological Engineering2018，11，5： | 13 |
| 2 | Effect of ENSO-driven precipitation on population irruptions of the Yangtze vole Microtus fortis calamorum in the Dongting Lake region of China显示文摘The Yangtze vole(Microtus fortis Buechner,1889)is a small herbivore species that inhabits lake beaches in the Dongting Lake region along the Yangtze River in Southern China.Its population shows strong oscillations during the wet season due to summer precipitation-induced immigration away from the lake into adjacent rice fields.The effect of El Niño-Southern Oscillation-driven precipitation on population abundance and growth of the vole species is not fully understood.We undertook an analysis of the combined data of 4 time series covering 1981–2006 from 4 different sites and a separate analysis on a single time series(1981–2006)from one site.Our results demonstrate that a dual effect of El Niño-Southern Oscillation-driven precipitation on the population abundance of voles is timedependent:precipitation in the current year has a positive effect,whereas precipitation in the previous year has a negative effect.The dual effect of precipitation on vole population is well explained by the unique interactions among vole population,precipitation water level and the lake beach habitat around Dongting Lake.We found that drier than average weather of the previous year benefited voles because their breeding habitats,lake beaches,were exposed for long stretches of time.Wet weather was found to increase the number of voles inhabiting rice fields because as the water level of the lake rose they were forced from beaches into surrounding rice fields.Summer precipitation in the Dongting Lake region was found to be positively associated with the sea surface temperature(SST)of the eastern tropical Pacific Ocean of the previous year and winter SST and spring SST of the current year.Annual rates of increase in the vole population of the reconstructed time series are negatively associated with the vole abundance and autumn precipitation of the previous year and winter precipitation of the current years.These results suggest that both extrinsic and density-dependent intrinsic factors may affect population dynamics of the Yangtze voles. | Zhibin ZHANG Lei XU Cong GUO Yong WANG Yongwang GUO | 2010 | Integrative Zoology2010，5，2： | 2 |
| 3 | Study on applying remote sensing technology on the monitoring of wheat aphid infest显示文摘 | Yang Jianguo Jin Xiaohua Guo Yongwang | 2001 | Chinese Agriculture Science Bulletin2001，17，6： | 1 |
| 4 | Isothermal Kinetics Modelling of the Fischer-Tropsch Synthesis over the Spray-Dried Fe-Cu-K Catalyst显示文摘在 Fe-Cu-K 弄干水花的催化剂上的 Fischer-Tropsch (英尺) 的等温的动力学在一个旋转篮子反应堆被学习。实验在 523 K 的恒温被执行, n (H2 )/n (公司) 喂 0.8 ¨ C 的比率 2.0,反应堆 1.1 ¨ C 迫使 0.556 的 2.5 MPa,和空间速度 ?á 1 0 (? 3 ) Nm (3 )/kgcat ?¤ s。为烃形成的运动模型根据简化碳化物机制被导出减少参数的数字。为甲烷和 ethene 的二个单个速度常数被考虑。而且,模型被非内在的效果以经验为主地修改,例如 physisorption 和虚构石蜡被考虑的压力,和产品的分配上的 | á - 石蜡的副反应的影响。模拟结果证明从 ASF 分发的英尺和偏差的试验性的现象,例如相对,甲烷的高产率和试验性地观察的 ethene 的低产量能基本上被描绘。给词调音:Fischer-Tropsch;等温的动力学;非内在的效果;弄干水花的催化剂;铁;铜; | Xiaohui Guo Ying Liu Jie Chang Liang Bai Yuanyuan Xu Hongwei Xiang Yongwang Li | 2006 | Journal of Natural Gas Chemistry2006，15，2： | 1 |
| 5 | Effects of quinestrol and levonorgestrel on prolaetin serum concentra- tion in lactating mongolian gerbils (meriones unguiculatus) and reproductive parameters of their offspring显示文摘 | LU Xiaohui GUO Yongwang SHI Dazhao | 2012 | Reproduc- tive biology2012，12，3： | 1 |
| 6 | Effect of trace Ce and B additions on the microstructure of Nb-3Si-22Ti alloys显示文摘The effects of trace Ce and B additions on the microstructure Nb-22Ti-3Si alloys were studied.The microstructure of the alloys was observed by scanning electron microscope(SEM),and their phase compositions were analyzed with X-ray diffraction(XRD) and Electro-Probe micro-analyzer(EPMA).The distributions of the elements were detected by Spectrum analyzer.The interface of the phases in the alloys was investigated by transmission electron microscopy(TEM).The results indicated that two phases of Nbss and Nb_3Si presented in Nb-22Ti-3Si,Nb-22Ti-3Si-0.2Ce and Nb-22Ti-3Si-0.2B alloys.The segregation of Ti at the interface between Nbss and Nb_3Si was promoted and the volume fraction of silicides in the alloy increased with the trace B and Ce addition to the Nb-22Ti-3Si alloy respectively.And there was no single and definite orientation relationship between Nb_3Si and Nbss in Nb-22Ti-3Si,Nb-22Ti-3Si-0.2Ce and Nb-22Ti-3Si-0.2B alloys.Compared with the Nb-22Ti-3Si alloy,the Nbss superlattice structure was found in Nb-22Ti-3Si-0.2Ce and Nb-22Ti-3Si-0.2B alloys. | Meiling Wu Liwu Jiang Shiyu Qu Fengwei Guo Ming Li Yongwang Kang Yafang Han | 2017 | Progress in Natural Science:Materials International2017，27，3： | 0 |
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