Drain collecting pipe and device under paddy-upland rotation condition

Abstract

The present invention discloses a runoff collecting pipe which is simultaneously suitable for conditions of the irrigated land, the dry farmland and the water and dry alternating cultivation and the corresponding runoff collecting device and the invention belongs to the field of the farming science. The runoff collecting pipe of the invention is a four-way pipe which comprises three water inlets and a water outlet, the external shape can be arranged to an inversed ''F'', the water flowing-in height of the water inlet 1 is consistent with the water-discharging height of the field ridge, the water flowing-in height of the water inlet 2 is consistent with the height of the ground; the water flowing-in height of the water inlet 3 is consistent with the water-discharging height of the field drainage channel; the invention also provides a runoff collecting device using the runoff collecting pipe of the invention, the collecting device comprises at least one runoff tank and each runoff tank comprises at least one runoff collecting pipe of the invention. The invention is suitable for the runoff collecting and monitoring under the conditions of irrigated land, dry land and water and dry alternating cultivation.

Description

technical field [0001] The invention relates to a runoff collecting pipe and a corresponding runoff collecting device which are applicable to paddy fields, dry fields and paddy fields and crop rotation conditions. It belongs to the field of agricultural science and technology. Background technique [0002] Soil erosion, non-point source pollution, nutrient loss in agricultural and forestry land, and migration of pollutants and nutrients in the soil are serious problems facing my country's ecology, environment, and agriculture and forestry. Runoff is the initiator and main carrier of these processes. Therefore, people attach great importance to the research and monitoring of runoff. Since 1994 in my country alone, more than 10,000 academic papers related to runoff have been published in various natural science journals (through the "Chinese Journal Full-text Database (CJFD)", including more than 600 papers on farmland runoff, these papers come from nearly 500 scientific resea...

AI Technical Summary

Problems solved by technology

[0004] 1) During the measurement process, it is easily affected by the external environment (such as wind speed, water level, the error of the self-recording water level gauge, etc.), and the reliability of the obtained data is insufficient

[0005] 2) For areas of paddy and dry rotation, the same runoff pool cannot carry out long-term simple and easy monitoring of the same plot

[0006] 3) There will be different requirements for the monitoring area, the area is small, the representativeness is not strong; the area is large, and it is difficult to collect runoff water

[0007] 4) Some methods have too high requirements for detection devices, which are generally difficult to meet

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