Abstract: Disastrous weathers for citruses have been hunting Shunchang County and surrounding areas since 1970s,such as the periodic freezing disaster every 9-10 years;the extraordinarily high temperature in early May every 2 or 3 years,with plenty of young fruits falling off;the occasional long-lasting rain coupled with suitable temperature for scab disease breaking out;and the almost annual high temperature and drought in August and September.This paper reviewed these weather disasters and proposed precautionary measures for then.

Key words: citrus, drought stress, drought resistance, endogenous hormones, correlation.