Construction and application of summer corn drought disaster loss quantitative evaluation model
The invention discloses construction and application of a summer corn drought disaster loss quantitative evaluation model, and aims to solve the technical problem that the influence of field drought disasters on the yield cannot be accurately restored and detected in the prior art. The method compri...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses construction and application of a summer corn drought disaster loss quantitative evaluation model, and aims to solve the technical problem that the influence of field drought disasters on the yield cannot be accurately restored and detected in the prior art. The method comprises: constructing a summer corn drought disaster damage loss model by the following steps: determining n growth stages of the summer corn in the whole growth period by taking 10 days or the number of local habitual days as a step length; according to summer corn field irrigation test data, calculating a moisture sensitivity index [lambda]i of the summer corn in the ith growth stage by utilizing an interpolation method; calculating a crop coefficient Kci of each stage according to a local irrigation test; and establishing a summer corn drought disaster loss quantitative evaluation model. The summer corn drought disaster loss quantitative evaluation model established by the invention can accurately restore and detect |
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