托里县1961-2009年霜冻变化特征及其对农作物的影响

摘要

根据1961-2009年托里县地面气象观测实测资料，对当地霜冻变化特征进行分析。结果表明，托里县初霜日推迟、终霜日提前，无霜期延长，对农作物生长十分有利，但需要注意防范个别年份出现的初霜日提前、终霜日延后的灾害性天气。%Variation characteristics of frost were analyzed according to the ground meteorological observation data during 1961-2009 in Toli County. The results showed that the first frost date postponed and the latest frost date in advance,and the frost-free period ex-tended in Toli County,which was good for the growth of crops. But in individual years,we need to pay attention to pre-vention of the disastrous weather which the first frost date in advance and the latest frost date postponing.