Abstract: A system for multi-channel data acquisition and precision irrigation and fertilizer application control of crops involving the following steps: obtaining a soil moisture content and a plant status parameter for plants within each homogeneous area; calculating a required soil moisture content for plants within the homogeneous area based on a difference between the required soil moisture content for plants within the planting area and the soil moisture content for plants within the homogeneous area; obtaining types and quality of required fertilizers for plants within the homogeneous area based on the plant status parameter for plants within the homogeneous area; blending an irrigation water and fertilizer solution required by plants within the homogeneous area; and irrigating plants within each homogeneous area according to the irrigation water and fertilizer solution required by plants within the homogeneous area.

Abstract: Disclosed is a straw crushing device capable of driving a sharpening structure, relating to the field of straw crushing. The straw crushing device includes a main housing, the main housing is internally provided with a crushing chamber and a suction chamber, a feeding nozzle is installed outside the main housing, and the feeding nozzle communicates with a feeding end of the crushing chamber. A spline transmission shaft is installed inside the main housing, and penetrates through the crushing chamber and the suction chamber. A driving motor is installed outside the main housing, and the driving motor is connected to the spline transmission shaft. A Y-shaped tool rest is installed on the spline transmission shaft, and the Y-shaped tool rest is located in the crushing chamber.

Abstract: A drip irrigation treatment device, which comprises a water storage tank, wherein a partition plate is arranged in the water storage tank and divides the interior of the water storage tank into a conveying cavity and a purifying cavity, one side of the conveying cavity and one side of the purifying cavity are jointly connected with a first water conveying mechanism, a protection box is arranged on one side of the water storage tank, a filter box is arranged in the protection box, one side of the upper end of the protection box is connected with a sewage conveying pipe, the lower end of the sewage conveying pipe corresponds to the filter box, a filtering mechanism is arranged in the filter box, a buffer moving mechanism is arranged on the periphery of the filter box, and a rotating mechanism is arranged on one side in the protection box.

Abstract: An automatic flushing device for a screen filter of a biogas slurry drip irrigation system and a use thereof are provided. The automatic flushing device includes a feeding mechanism, a filter unit, a discharging mechanism and a control mechanism, where the filter unit is provided with a feeding end fixedly threaded to a discharging end of the feeding mechanism and a discharging end fixedly threaded to a feeding end of the discharging mechanism; and the control mechanism is clamped on a pipe of the feeding mechanism. The automatic flushing device enhances the cleaning strength and uniformity of ultrasonic waves to the filter screen. The ultrasonic vibration rod is nested inside the upper filter casing through the externally-threaded hollow cap and a threaded top portion of the upper filter casing, which greatly facilitates the cleaning, replacement and maintenance of the ultrasonic vibration rod.

Abstract: A drip irrigation treatment device, which comprises a water storage tank, wherein a partition plate is arranged in the water storage tank and divides the interior of the water storage tank into a conveying cavity and a purifying cavity, one side of the conveying cavity and one side of the purifying cavity are jointly connected with a first water conveying mechanism, a protection box is arranged on one side of the water storage tank, a filter box is arranged in the protection box, one side of the upper end of the protection box is connected with a sewage conveying pipe, the lower end of the sewage conveying pipe corresponds to the filter box, a filtering mechanism is arranged in the filter box, a buffer moving mechanism is arranged on the periphery of the filter box, and a rotating mechanism is arranged on one side in the protection box.

Abstract: A variable-flow-rate anti-clogging emitter includes an upper casing and a lower casing, where the upper casing and the lower casing are fixedly connected with each other; the upper casing has a flat top surface provided with a water outlet and a bottom surface provided with a truncated conical slot in communication with the water outlet; the lower casing includes a flow channel portion and a discharging portion, which are recessed in an upper surface of the lower casing; the flow channel portion has one end provided with multiple parallel feeding channels and an other end communicated with the discharging portion; one end of a lower surface of the lower casing is provided with an L-shaped platform; water inlets of the multiple feeding channels are arranged on a side wall of the L-shaped platform; and an elastomer flow channel is fixedly provided between the upper casing and the lower casing.