Lysimeter

Abstract

The invention relates to a lysimeter which belongs to the field of water conservancy project and agriculture; the IPC international classification number of the invention is E02B 1/00. The lysimeter comprises a flexible soil box, an inverted filter layer, a water collecting pipe, a sealing device, a drain pipe and a water collecting well; wherein, the inverted filter layer is arranged on the lower part of the flexible soil box, the water collecting pipe is arranged in the middle o the inverted filter layer, water collecting holes are evenly distributed on the water collecting pipe, the water sealing device is arranged on the connection part of the lower part of the water collecting pipe and the flexible soil box, the lower part of the water sealing device is connected with the drain pipe, the drain pipe is connected with the water collecting well, and the length of the water collecting well below the connection part of the water collecting pipe and the water collecting well needs to be determined according to the size of a water pump or a sensor. The lysimeter has simple construction and maintenance, reasonable drainage system, compact water sealing structure, good water sealing effect, simple mounting and has both remarkable environmental ecological and social economic benefits.

Description

1. Technical field [0001] The invention relates to a lysimeter, which belongs to the fields of hydraulic engineering and agronomy, and its IPC international classification number is E02B1 / 00. 2. Background technology [0002] The lysimeter is an important tool for studying the law of crop water consumption. Traditional lysimeters at home and abroad are generally made of rigid materials, such as reinforced concrete, bricks, steel plates, and plexiglass. The construction of lysimeters made of rigid materials is relatively complicated. The waterproof effect is not good, and the production cost is high. Due to the high cost, difficult construction, and complex structure, general water conservancy or agricultural scientific research institutions have no conditions to manufacture such devices, which objectively affects the accuracy of scientific research results. Studies have shown that the water consumption of crops with and without such devices differs by about 20%. Under the c...

AI Technical Summary

Problems solved by technology

Under the condition of no lysimeter, the field experiment research on the law of crop water consumption generally monitors to about 1m. The existing research results show that under the condition of water-saving irrigation, the zero flux surface of water in the soil profile of fruit trees is generally 3m ~ 4m, generally The water zero flux surface of the field crop soil profile is generally 2m~3m, so it is difficult to estimate the water flux of deep seepag

Images