搜索结果: 1-3 共查到“作物学 ragweed”相关记录3条 . 查询时间(0.046 秒)
ESTIMATION OF POLLEN AND SEED PRODUCTION OF COMMON RAGWEED IN FRANCE
Ambrosia artemisiifolia pollen seed invasive plant
2010/12/23
Common ragweed (Ambrosia artemisiifolia L.) is an invasive weed of fi eld crops and human-disturbed habitats in Europe. As well as in its natural range (North America), common ragweed is a threat to h...
VARIATION IN RAGWEED (AMBROSIA ARTEMISIIFOLIA L.) POLLEN CONCENTRATION IN CENTRAL CROATIA, 2002-2003
aerobiology ragweed allergenic pollen pollen count
2010/12/23
The aim of the study was to determine the onset, duration and termination of the ragweed pollen season; intradiurnal, daily and monthly pollen variation, and possible differences in the occurrence and...
RAGWEED POLLEN IN THE AIR OF SZCZECIN
pollen grain pollen count allergens ragweed (Ambrosia spp.
2010/12/24
The aim of the study was to analyse the ragweed (Ambrosia) pollination in Szczecin (western Poland) in the years 2000-2002. Measurements were performed by the volumetric and gravimetric method.