【摘要】 本文分析了公元５８０～１９７９年的陕西大早与大阳活动的关系，得到大旱主要发生在太阳黑子的高值段和下降段以及低值段。第２２大阳周峰年已经过去，粗略估计１９９６年是第２３太阳周的谷年。我们预测１９９５Ａｓｌ９９７年大旱１次，１９９７～２０００年基本上无大旱，２０００～２００５年大旱２～３次。更多还原

【Abstract】 The relation between the droughts for the period from 580 to 1979 in Shaanxi and the solar activity is studied. The droughts mostly appeard in maximum. declining phase and minimum of solar activity cycles. It is predicted that there will be 1 drought in 1995～1977, 0 drought in 1997～2000 and 2 to 3 droughts in 2000～2005.更多还原