How to predict the occurrence of pests and diseases in advance?

Farmers' friends often take preventive measures after crops have caused pests and diseases. How to predict the occurrence of pests and diseases in advance is the key to prevent pests and diseases. Today, Mei Chen Xiaobian talks about some common methods to predict the occurrence of pests and diseases in advance.

1. Forecast based on accumulated experience

According to the experience of farmers for many years, understand the law of occurrence of pests and diseases and use these rules to speculate on the future;

2 , based on weather and other circumstances

For example, knowing the appropriate temperature of pests and diseases, you can generally estimate when they will occur, what seasons are popular, like the lunar calendar "stunning" is the solar terms that many insects stop sleeping and start activities. In addition, many organisms grow and thrive. Use some of the more obvious meteorological or biological

 

Elephants, such as willow germination, peach tree flowering, etc., can serve as a "harsher" for the occurrence of pests and diseases. This method can be called "phenology".

3 , "predictive 圃" method

To make a good prediction is still inseparable from the actual investigation. The egg inspection period and quantity can predict the incubation time and quantity of the larvae, check the current number of pests and diseases, and combine the weather and cultivation conditions to predict the number of days and futures, and decide how to prevent and control. An old but also very effective forecasting method is the “predictive 圃” method.