Method and device for regulating and controlling water and fertilizer in rice field

Abstract

The invention provides a method and a device for regulating and controlling water and fertilizer in a rice field. The method comprises the steps as follows: according to daily precipitation, leaching amount and measurement parameters of a current land parcel, determining the irrigation amount of the current land parcel in the current growth stage on the basis of the water demand of rice in the current growth stage; determining the fertilization amount of the current land parcel in the current growth stage based on the nutrient demand of the current growth stage of the rice according to the rainfall brought-in nutrient amount, the drainage brought-away nutrient amount and the leaching brought-away nutrient amount of the current land parcel in the previous growth stage of the rice; and performing water and fertilizer regulation and control on the current land parcel according to the irrigation amount and the fertilization amount. According to the method and the device for regulating and controlling water and fertilizer in the rice field, the water amount and fertilizer amount of the rice can be accurately regulated and controlled, waste of water resources and fertilizer is effectively avoided, the rice yield can be guaranteed, and nitrogen and phosphorus non-point source pollution of the rice field can be effectively prevented and controlled.

Description

technical field [0001] The invention relates to the technical field of agricultural planting, in particular to a paddy field water and fertilizer regulation method and device. Background technique [0002] Rice plays an extremely important role in my country's food security. At the same time, rice is also a large consumer of fertilizer and water resources. The water consumption of rice accounts for about 60%-70% of the total agricultural water consumption, and the consumption of chemical fertilizers exceeds 20%. Due to the extensive management of water and fertilizer in rice planting, there are common problems such as shallow fertilizer application, excessive base fertilizer and tillering fertilizer, random irrigation and drainage, etc. In addition, the water network in the rice planting area is densely distributed, and the rainfall is abundant, and flood disasters are prone to occur frequently The problem of non-point source pollution of nitrogen and phosphorus caused by r...

AI Technical Summary

Problems solved by technology

However, these technologies mainly rely on manual operations, which are very labor-intensive and time-consuming, and cannot be accurately controlled, which seriously limits their popularization and application and application effects, which in turn restricts the efficient prevention and control of nitrogen and phosphorus non-point source pollution in paddy fields.

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