Agricultural drought disaster monitoring and forecasting method based on crop water demand and soil water supply

Abstract

The invention belongs to the field of agriculture and water resource development and utilization, and discloses an agricultural drought disaster monitoring and forecasting method based on crop water demand and soil water supply, which comprises a crop water demand information acquisition module, a soil water supply information acquisition module, a data center, a meteorological forecasting module,a drought forecasting module and a drought analysis module. According to the method, through crop water shortage index calculation and crop water profit and loss prediction calculation in future predetermined time in different regions, the water shortage condition of crops can be comprehensively evaluated, and a reliable data basis is provided for analysis and evaluation of drought conditions. According to the invention, a meteorological system and a crop water requirement law are combined for development, including agricultural drought comprehensive prediction, monitoring, scientific assessment and early warning, so that water resources can be reasonably allocated to cope with drought, and the method has very important theoretical and practical significance for solving the drought and promoting crop growth.

Description

technical field [0001] The invention belongs to the fields of agriculture and water resource development and utilization, and in particular relates to an agricultural drought disaster monitoring and forecasting method based on crop water demand and soil water supply. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: my country is a large agricultural country, and the huge population base forms a rigid constraint on the food requirements. However, my country's special geographical features and regional climate make agriculture face many natural disasters. Drought is one of the main natural disasters affecting my country's agricultural production, and the annual grain loss due to drought accounts for half of the total grain loss in the country due to disasters. This is due to the fact that the majority of farmers have always had the idea of ​​relying on the weather for food. On the other hand, the decision-making...

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Problems solved by technology

[0004] To sum up, the problems existing in the existing technology are: my country’s domestic agricultural drought monitoring and early warning system is based on soil water content, and there is basically no systematic combination of meteorological system and crop water demand law to carry out agricultural drought monitoring, assessment and early warning. system

Even in the monitoring of agricultural drought, it is currently mainly focused on the monitoring of soil moisture stations, and there is no systematic analysis based on the objective scientific fact of whether the crops are really short of water, and there is no research combined with weather forecasting.

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