Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Xu RuMei"'
Publikováno v:
Zeitschrift für Angewandte Entomologie. 100:494-503
Autor:
Xu Rumei
Publikováno v:
Zeitschrift für Angewandte Entomologie. 94:452-465
Based on our research concerning sampling techniques and mathematical modelling of whitefly population in Beijing, China, the following remarks can be made: 1. It is difficult, if ever possible, to estimate the population density of greenhouse whitef
Publikováno v:
Zeitschrift für Angewandte Entomologie. 97:305-313
There are two weak points in the life cycle of greenhouse whiteflies within a growing season: 1. immigration from the fields into the greenhouses in autumn and 2. emigration from the greenhouses into the fields in spring. Any effort that aids in disc
Publikováno v:
BioControl, 54(3), 411-424
BioControl 54 (2009) 3
BioControl 54 (2009) 3
Hyperparasitism by virgin female Encarsia tricolor was studied by direct observation of its behaviour when contacting two secondary host species (Encarsia formosa and E. tricolor) at different host stages (first and second larval stage, third larval
Publikováno v:
Oryx. 40:331-336
China has one of the world's most diverse freshwater turtle faunas but is also a major consumer of freshwater turtles. In the 1980s over-collecting, illegal trade and habitat destruction increased dramatically, pushing almost all Chinese turtles towa
Publikováno v:
Arctic, Antarctic, and Alpine Research. 37:261-266
This is the first time that the soil arthropod communitycomposition along a high-altitude gradient (3,837, 4,105, and5,050 m a.s.l.) has been investigated in eastern Tibet, China.Five soil samples of 50 cm super(2) were taken from each site andextrac
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Publikováno v:
Computers and Electronics in Agriculture. 13:115-131
A simple discrete Lotka-Volterra type model of the gypsy moth (Lymantria dispar L.) was developed using the more detailed Gypsy Moth Life System Model and related information. The tree equation is derived from the diameter growth of a gap model, exte
Publikováno v:
Computers and Electronics in Agriculture. 13:133-153
The simplified gypsy moth model system (SGMMS) is represented by three-stage discrete equations, using an annual time step. Qualitative analysis of the SGMMS reveals the trajectory of G 1+1 against G t on a phase plane. The eigenvalue, V , of the sys
Publikováno v:
Journal of Applied Entomology, 119, 553-559
Journal of Applied Entomology 119 (1995)
Journal of Applied Entomology 119 (1995)
Host-plant resistance and biological control are considered to be cornerstones of integrated pest management programs, but there are few studies that elucidate the intricate relationships among host plant, phytophagous insect and natural enemies. Our