Remote sensing monitoring method for sheath blight of land winter wheat

Abstract

The invention discloses a remote sensing monitoring method for the sheath blight of land winter wheat, belonging to the technical field of crop growth monitoring. Aiming at the problems of long forecasting time, high quantity demand for labor, forecasting information delay, limited monitoring range and the like of the existing winter wheat disease monitoring method, the invention provides a remote sensing monitoring method for the sheath blight of land winter wheat, which is a method for monitoring the occurrence of the sheath blight of land winter wheat by comprehensively utilizing the remote sensing vegetation index, the relative humidity of wheat land canopy and the environment temperature of the wheat land. The method has the advantages that the sheath blight of winter wheat is monitored by integrating the satellite remote sensing data and climate factor, thus the occurrence of the sheath blight of land winter wheat can be monitored quickly in a large area without damage, and the monitoring accuracy and timeliness are improved to a great degree; and the produced winter wheat sheath blight remote sensing monitoring information graph contains a large amount of information, is visual and convenient to understand and use, and provides reference to the development of the primary-level agricultural plant protection measures.

Description

technical field [0001] The invention relates to a winter wheat disease monitoring method, in particular to a remote sensing monitoring method for sheath blight of field winter wheat at the jointing stage, and belongs to the technical field of crop growth monitoring. Background technique [0002] Winter wheat sheath blight, also known as winter wheat sharp eye spot, is a soil-borne fungal disease distributed worldwide. one of the factors. The earlier the onset of winter wheat sheath blight, the greater the loss, and in severe cases, it will cause 20% to 40% yield reduction, and even cause dry booting, dry and white ears, and grain failure. The jointing stage of winter wheat is the fastest growing period in the life of winter wheat, and it is also a critical period for the rapid growth of sheath blight and its damage to stems. Doing a good job in the monitoring and forecasting of winter wheat sheath blight at the jointing stage is very important for lodging prevention and yi...

AI Technical Summary

Problems solved by technology

However, there are many factors affecting the incidence of winter wheat sheath blight. The meteorological data can only represent the meteorological information of a certain station, and the disease index predicted by the fitting relationship between the meteorological information of this station and the disease index cannot represent the disease index. The incidence of sheath blight in the whole county and city

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