Frequent floods and droughts in South Asia have had a great impact on agricultural production. Try to analyze the reasons and put forward the corresponding countermeasures.

Frequent floods and droughts in South Asia are mainly due to the seasonal and interannual variation of precipitation, which is determined by the strength of southwest monsoon. The southwest monsoon comes too early, or goes too late, or the wind is too strong, which is prone to floods; If the southwest monsoon comes too late, or goes too early, or the wind is too weak, it is prone to drought.

Countermeasures: build water conservancy projects, such as reservoirs, inter-basin water transfer, flood diversion and storage projects.