科研之友
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摘要
The problems concern to reducing yield determined of unfavourable and risk meteorological events belong always to actual subject of scientific studies. The submitted report deals with analyses of distribution precipitation during the growing season and related occurrence of drought and dry spells. This report is adverts to the difficult comparison of results from different points of views. It results from problems of basic terms as dry and wet period therefore the authors recommend to apply to classification more criterions.
The authors performed analyses both of databases including period of 47 years (the sugar beet yield and agrometeorological database) for the classification of drought and dry spells. The modified model of climatic variability of yield Cm, method of thermopluviogram and index of drought Si were applied as standards. The years 1976, 1990 and 1991 were evaluated as the unfavourable for the growth and ontogenesis of sugar beet.
- 出版日期2008
