What are the natural disasters in the following pictures? How to reduce the harm of this disaster to crops?

There are many kinds of natural disasters in China, among which drought, waterlogging, chilling injury and biological disasters are the most common concentrated natural disasters.

I. Drought

Drought is a serious meteorological disaster and the most destructive natural disaster in agricultural production. The grain loss caused by drought in previous years was about 20 billion to 25 billion Jin; The direct economic loss is about 654.38+0.5 billion to 20 billion yuan.

The effects of drought on agriculture in China are as follows:

Reduce China's grain output and affect food security; Fluctuations in food prices affect market stability; Reduce farmers' income and affect rural stability; Increase the difficulty of self-help and expand the subsequent harm.

Drought prevention and control:

1. Strengthen the dynamic monitoring and prediction of drought disaster ecological environment, and provide scientific basis for decision-making departments to formulate and formulate plans reasonably. Strengthen the leading role of the government, continue to support the South-to-North Water Diversion Project, solve the disasters caused by uneven distribution of water resources, and make preparations for quickly lifting the crisis and resuming production.

2. Improve the utilization rate of water resources and reduce the waste of water resources.

3. Raise people's awareness and prevent water pollution.

4, the construction of perfect water conservancy facilities. Some water conservancy facilities are outdated, and their water storage and delivery functions have declined due to insufficient management and protection. Therefore, it is necessary to strengthen the construction of high-standard water conservancy facilities.