Leaf powdery mildew potential forecasting method for grapes under protected cultivation

Abstract

The invention discloses a leaf powdery mildew potential forecasting method for grapes under protected cultivation. The method includes the steps of firstly, collecting the indoor and outdoor meteorological factor data of the greenhouse of the grapes under protected cultivation; secondly, using manual-control experiments to investigate the leaf powdery mildew emergence grade of the grapes under protected cultivation under different meteorological conditions; thirdly, analyzing the relation between the powdery mildew emergence and development grade and the meteorological conditions so as to determine the key meteorological factors influencing the emergence and development of the powdery mildew of the grapes under protected cultivation; fourthly, building a forecasting model of the key meteorological factors influencing the emergence and development of the powdery mildew of the grapes under protected cultivation in the greenhouse; fifthly, determining the meteorological index range of different grades of powdery mildew, and building a model for forecasting the leaf powdery mildew potential of the grapes under protected cultivation. By the method which is simple, practicable and good in forecasting effect, the emergence and development grades of the leaf powdery mildew of the grapes under protected cultivation can be forecasted accurately.

Description

technical field [0001] The invention belongs to the field of prevention and control of greenhouse crop diseases and insect pests, and in particular relates to a method for forecasting the potential potential of grape leaf powdery mildew in facilities. Background technique [0002] In recent years, protected cultivation of grapes in China has developed very rapidly. In 2014, the national grape cultivation area has reached more than 3 million mu. Jiangsu is the main area for grape cultivation, with a cultivated area of ​​450,000 mu, of which the protected cultivation area has reached 100,000 mu. Since Jiangsu is located in the subtropical high-pressure monsoon climate zone, high temperature and high humidity in summer can easily cause powdery mildew on grape plants, causing fruit cracking and rot. Powdery mildew in facility greenhouses has serious hazards, rapid prevalence, large losses, and high difficulty in prevention and control. Research on the prediction method of facili...

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Problems solved by technology

[0003] Domestic research on grape powdery mildew grades in facilities generally uses meteorological factors in facilities, disease index, etc. as dependent variables to establish powdery mildew forecasting models, and there is no relevant report on the study of grape powdery mildew in facility facilities determined by outdoor meteorological factors

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