Waterlogging simulation test system for rainfed cropland

Abstract

The invention relates to a waterlogging simulation test system for rainfed cropland, which belongs to the technical field of agricultural water and soil engineering. The waterlogging simulation test system comprises a water reservoir, a leaching pond group, water level control devices and the like, wherein the leaching pond group is composed of leaching pond units; an observation corridor and a gutter are arranged between the adjacent leaching pond units; the corresponding water level control device is arranged on one side of each leaching pond unit; and a tread is arranged at one end of the leaching pond group, and the water reservoir is arranged at the other end of the leaching pond group. The system is used for providing water for testing for the leaching pond group through a water conveying pipe and a water storage tank and can simulate a waterlogging environment of the cropland through drain pipes, irrigation and drainage dual-purpose pipes and the water level control devices and effectively perform irrigation and drainage control. The system can be used for solving the problems that the boundary conditions of the existing leaching pond testing and the crop growth environment are significantly different from the cropland, and the testing precision and the practicality of research results are affected. The system can be respectively used for creating the influences of rainfall as well as rivers, ditches and the like on the periphery of the cropland on soil water and underground water when the water level is too high, ensure that the testing can be carried out under the near-natural conditions. Furthermore, the structure is simple, and the construction cost is low and practical.

Description

Technical field: [0001] The invention relates to a dryland farmland waterlogging simulation test system, which belongs to agricultural water and soil engineering [0002] technology field. Background technique: [0003] Dryland crops are continuously affected by waterlogging, waterlogging, or being affected by waterlogging for a period of time. These are the three basic forms of water stress for crops in areas prone to waterlogging and waterlogging. The test pit group is often used for dryland farmland waterlogging experiments. . The traditional test pit (tube) test system is mostly built on the ground without a protective layer. The boundary conditions of the test and the crop growth environment are significantly different from those of the farmland. At the same time, because the problem of groundwater level control is not well solved, It affects the accuracy of the test and the practicability of the research results. On the other hand, the traditional pit (tube) test sy...

AI Technical Summary

Problems solved by technology

The traditional test pit (tube) test system is mostly built on the ground without a protective layer. The boundary conditions of the test and the crop growth environment are significantly different from those of the farmland. At the same time, because the problem of groundwater level control has not been well solved, Affected the accuracy of the test and the practicability of the research results

On the other hand, the traditional pit (tube) test system cannot simulate the agricultural hydrological environment in which rivers, lakes, and ditches around the farmland are flooded first and then flooded when the water level is high.

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