Remote-sensing quick monitoring method of winter wheat powdery mildew in field

Abstract

The invention discloses a remote-sensing quick monitoring method of winter wheat powdery mildew in a field, and belongs to the technical field of crop growth monitoring. The remote-sensing quick monitoring method of the winter wheat powdery mildew in the field aims at solving the problems that the traditional monitoring method of the winter wheat powdery mildew in the field is high in manpower and time consumption, limited in monitoring range and sample capacity and hysteretic in observing and predicting information. The method uses a remote-sensing vegetation index, a chlorophyll content of winter wheat plant leaves, a moisture content of the leaves and average daily temperature of the wheat field to monitor the occurrence of the winter wheat powdery mildew in the field. The method has the advantages that as the method integrates satellite remote-sensing data, winter wheat growth information and climatic factors to monitor the winter wheat powdery mildew in the field, the occurrence of the large-area winter wheat powdery mildew can be monitored immediately and accurately in a wide range and at lower cost; and a produced remote-sensing monitoring information map for the winter wheat powdery mildew is high in information content, visual, and easy to comprehend and use, and has a high reference for formulating preliminary agricultural management measures.

Description

technical field [0001] The invention relates to a winter wheat disease monitoring method, in particular to a remote sensing rapid monitoring method for field winter wheat powdery mildew, belonging to the technical field of crop growth monitoring. Background technique [0002] Powdery mildew is one of the important diseases of winter wheat in my country. Under the conditions of suitable temperature, relative humidity greater than 70%, and dense growth conditions, the disease often occurs. The disease can invade the aboveground organs of winter wheat plants, especially the leaves and leaf sheaths. Sometimes chaff and awns are also harmed, which is a cross-regional climatic disease with the characteristics of high incidence, wide occurrence range and strong epidemic. If there is no timely monitoring and control, once an outbreak occurs, it will often cause a large-scale reduction in winter wheat production, or even extinction in severe cases, resulting in irreparable economic lo...

AI Technical Summary

Problems solved by technology

If there is no timely monitoring and control, once an outbreak occurs, it will often cause a large-scale reduction in winter wheat production, or even extinction in severe cases, resulting in irreparable economic losses. Therefore, the timely monitoring of large-scale winter wheat powdery mildew has always been the focus and focus of academic research. difficulty

[0003] For a long time, the traditional field sampling survey of wheat fields has been the main means of identifying and monitoring winter wheat powdery mildew. The traditional forecasting method not only takes a lot of manpower and time, but also has a limited sampling range and sample size. It is difficult to obtain a wide range of disease data in a timely manner, and the forecasting information is lagging behind, which greatly affects the accuracy of monitoring. Accurate implementation of degree and control measures

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