摘要
干热风是我国北方小麦开花、灌浆期间主要的灾害性天气,对小麦产量影响很大。关于小麦干热风的气象指标,国内外学者作过很多研究,提出过一系列干热风指标,对小麦生产、科研和气象服务都起了一定的作用。但由于这些指标的气象要素选择和取值不同,植株受害标准又不统一,也给科研和服务带来许多不便。
According to a unified scheme,a daily meteorological index of hotarid wind,as expressed in terms of unified yield-decreasing values and meteorological factors,has been obtained by using case analysis and methmatic statistics in the calculation of 48 data from 19 winter wheat varieties and 7 spring wheat varieties at 13 experimental points in wheat-growing areas of North China during a three-year period.An index system,in which the process was decided by the number of days and the annual type by the process,has been propossed.The index is relatively unified,characterized by local features,and appears to be scientific and practical.
作者
北方小麦干热风科研协作组
Coordinated Research Group of Hot-Arid Wind for Wheat in North China
出处
《中国农业科学》
1983年第4期68-75,共8页
Scientia Agricultura Sinica
