Analysis method of high-temperature hot disasters in flower season of crops

Abstract

The invention relates to an analysis method of high-temperature hot disasters in a flower season of crops. The invention aims at providing the analysis method of the high-temperature hot disasters in the flower season of summer corn in the Huang-Huai-Hai region, wherein the method is accurate in analysis and reliable in information. Accumulated values of two disaster-caused meteorological factors, namely temperature difference of daily maximum temperature and a temperature threshold and daily high-temperature time, are used as indexes which express the hot disasters in the flower season of the crops, the method has meanings of high-temperature accumulated values and excess values and is good in high-temperature representativeness, and the severity of the high-temperature hot disasters in different regions can be accurately predicted. According to the calculation formula, the accumulated values of the high-temperature time and the temperature difference of a high-temperature day can be obtained, after level setting is conducted, the analysis method is combined with a statistical method, the severity of the high-temperature hot disasters in the different regions can be precisely analyzed, farmers are reminded of making preparation for disaster prevention and planning in advance, and the loss of yield decrease of the crops caused by the high-temperature hot disasters is avoided.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to an analysis method for high-temperature heat damage in the flowering stage of crops. Background technique [0002] At present, most of the research on crop heat damage is aimed at rice, and the analysis of high temperature heat damage of other crops is very weak. The research direction also focuses on the discussion of physiological activity indicators, which is difficult to use in production practice, especially for corn high temperature heat damage. Research on harm indicators is relatively weak. [0003] However, the existing high-temperature heat damage indicators generally use the number of days of high-temperature occurrence, which has poor discrimination and is greatly affected by temperature thresholds, making it difficult to accurately reflect the degree of persistent and severe high-temperature stress. In addition, the high-temperature heat damage index does not comprehensiv...

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Problems solved by technology

[0002] At present, most of the research on crop heat damage is aimed at rice, and the analysis of high temperature heat damage of other crops is very weak. The research direction also focuses on the discussion of physiological activity indicators, which is difficult to use in production practice, especially for corn high temperature heat damage. Research on harm indicators is relatively weak

[0003] However, the existing high-temperature heat damage indicators generally use the number of days of high-temperature occurrence. This indicator has poor discrimination and is greatly affected by the temperature threshold. It is difficult to accurately reflect the degree of continuous and severe high-temperature stress.

In addition, the high temperature heat damage index does not comprehensively consider the effect of high temperature accumulation and exceeding the effect, the representative of high temperature is not good, and it is impossible to accurately analyze the high temperature heat damage, which may seriously affect the yield of crops and cause serious losses to farmers and the country.

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