黑龙江省90年代前期有利于作物生长的热量条件分析

STUDY ON THERMAL CONDITIONS FAVORABLE FOR CROP GROWTH IN THE EARLY 1990s OVER HEILONGJIANG,NE CHINA

摘要:

对黑龙江省1991～1994年间作物生长季的热量条件,重点对无霜期、终初霜日和5、8、9月份的平均气温进行了详细的分析。初步结论表明,1991～1994年气候有变暖的趋势,特别是作物成熟期热量充足,初霜推后,无霜期延长,有利于农业生产。同时指出气象条件是农业丰欠的重要因素。

关键词:作物生长;热量条件

Abstract:

Close investigation is carried out of the 1991～1994 thermal conditions in the crop growth season,with focus on the no-frost duration,onset/terminal day of the disaster,and monthly mean temperature in May,August and September.Results show that the 1991～1994 climate advanced toward warming,and,in particular,abundance in heat was offered for the maturity with the delayed first frost day and prolonged frostfree period,which contributed to crop production.Also,it is noted that meteorology is of importance to bumper or poor harvests.

Key words:crop growth;thermal condition