Minimum air temperatures probabilities harmful to the fecundation of rice flowers in the central region of Rio Grande do Sul, Brazil

Ciência Rural

Schvambach, Jacques Leandro³  Didone, Marino Antônio³  Buriol, Galileo Adeli¹  Estefanel, Valduíno¹  Steinmetz, Sílvio² 

[1] Universidade Federal de Santa Maria, Santa Maria;Empresa Brasileira de Pesquisa Agropecuária, Pelotas;Universidade Federal de Santa Maria

关键词: : rice;    minimum temperature;    probability;    harmful;   

DOI  :  10.1590/S0103-84782000000100001

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The probability of occurency of minimum air temperatures harmful to the fecundation of rice flowers in the Central Region of Rio Grande do Sul State was shown in a map. Minimum air temperatures lower or equal to 13, 15 e 17°C occuring during one or more days, five or more days and ten or more days in December, Jannary, February and March were used. The isolines of probability were drown on a map. The results showed that the lower probabilities are located in the parts of the land with lower altitude like the valley of Ibicui, Jacui, Taquari, and Guaiba rivers. Besides, January and February are the months where the risks of low temperatures to rice flowering is lower.

【 授权许可】

CC BY-NC