Early warning method of greenhouse vegetable diseases and insect pests

Abstract

The invention discloses an early warning method of greenhouse vegetable diseases and insect pests. The method comprises the steps of: firstly, installing an automatic weather station with the model of PC-3 to automatically detect greenhouse environment conditions, wherein an early warning system is used for counting detection results every other 24 hours; secondly, collecting chlorophyll fluorescence by an optical fiber spectrograph; thirdly, receiving a fluorescence spectrum by a chlorophyll fluorescence spectrum collecting system, processing the fluorescence spectrum and inputting to a computer; fourthly, extracting fluorescence spectrum data by the early warning system; fifthly, further judging the extracted fluorescence spectrum data by the early warning system; sixthly, displaying the judgment results of the first and second characteristic points of the extracted fluorescence spectrum data by the early warning system, determining to stop detecting, carrying out the next detection step or classifying diseases and insect pests, determining the types, the latent period or the severity degree of the diseases and insect pests; and seventhly, outputting an obtained monitoring result by a monitoring and predicting system, judging an analyzed and processed result by the early warning system, displaying and saving the processed result, transmitting a result forming a warning instance to a warning system so as to complete once warning process.

Description

technical field [0001] The invention is applied to the field of pest control of greenhouse vegetables, and more precisely, the invention relates to an early warning method for pests of greenhouse vegetables. Background technique [0002] The monitoring and early warning of vegetable diseases and insect pests is an important link in the production and management of agricultural vegetables, and it is also the guarantee of their excellent quality. With the development of the scale of greenhouse construction and the improvement of internal facilities, the management of diseases and insect pests is also listed as an important part of greenhouse production management. In recent years, the scale of pests and diseases in facility agriculture has been increasing year by year. Pesticides have been widely used as a compensatory means, but they have also brought about problems that endanger human health, such as pesticide residues and accumulation of heavy metal ions in the human body. ...

AI Technical Summary

Problems solved by technology

Although this method is helpful to the current production, the meteorological data is also affected by wind speed, evaporation, ground temperature and other aspects. In addition, every large-scale movement of the ocean will bring sudden changes to the land meteorological data. changes, and this kind of movement is uncontrollable and cannot be changed; at the same time, the method of obtaining early warning indicators of diseases and insect pests by relying on the average, maximum or minimum value of accumulated meteorological data can only achieve qualitative analysis, and can only obtain the threshold of the occurrence conditions of diseases and insect pests. The occurrence of microbes also depends on the changes in microbial populations and the results of the interaction between pathogens and plants. Therefore, the critical point of early warning in this method is wider. Meteorological data alone cannot fully guide current and future production activities.

Another method that is more commonly used is the chemical detection method of enzyme activity, which is to detect the infection of pathogens according to the law of the increase or decrease of enzyme activity. Live leaves must be picked for in vitro measurement, which requires the use of chemicals for determination , using this method is time-consuming, laborious, and destroys living leaves, which cannot meet the requirements of non-destructive testing

[0004] The greenhouse is a semi-enclosed environmental individual. While exchanging gas with the external environmental conditions, it also ensures the normal physiological reactions of the crops growing inside. The interaction between the physiological and biochemical reactions of the crops and the surrounding environment leads to the formation of high temperature inside the greenhouse. The environmental characteristics of high humidity, and this environmental condition is extremely conducive to the occurrence of pests and diseases, but the occurrence and prevalence of pests and diseases have periodic and seasonal characteristics, if the early warning of the whole year is used, it will inevitably lead to waste of resources and increase of cost input , and the simple calculation of environmental indicators cannot meet the needs of early warning of greenhouse diseases and insect pests, so it is of great significance to adopt new methods for early warning of greenhouse diseases and insect pests

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