The invention belongs to the technical field of intelligent
agriculture, and discloses a
canopy-atmospheric environment information-based
soil water content prediction method and
system, and the method comprises the steps: setting a
canopy and atmospheric environment monitoring unit in a field, and synchronously collecting the
canopy temperature,
wind speed,
relative humidity, and six-dimensional environment parameters of
atmospheric temperature,
wind speed and
relative humidity; the crown
temperature difference is calculated after preprocessing; the method comprises the following steps: constructing a
training set by utilizing measured data of soil relative
water content, constructing a
soil water content prediction model by adopting a
random forest algorithm, screening and confirming an optimal prediction model through grid search and
cross validation, and screening key features by combining an SHAP value; the
water demand is automatically calculated according to a pre-established
crop whole-growth-period
drought stress threshold table and a dynamic
irrigation decision formula, and meanwhile, the
adaptation of a general model to a regional
specific model is realized by constructing an environmental parameter-actually measured
water content database and transfer learning, so that the
soil water content state is accurately predicted, and the
soil quality is improved. And a scientific basis is provided for precise
irrigation.