Corn root system growth research device

Abstract

The invention discloses a corn root system growth research device. The device comprises a mist culture box body (1), the whole mist box body (1) is of a cuboid box-shaped structure, a liquid storage tank (2) is arranged inside the mist culture box body, a water pump (3) is installed inside the liquid storage tank (2), and the water outlet end of the water pump (3) is connected to a water guiding pipe (4); several shunt rubber tubes (5) communicated with the water guiding pipe is mounted on the water guiding pipe (4), the end of each shunt rubber tube (5) is docked with a culture frame, and thelower end of the culture frame is fixed at the bottom surface of the liquid storage tank (2). The device has simple structure, and fully satisfies the growth habit and growth cycle of corns, measuredroot system data is more accurate, a growth and cultivation frame with the corns can be automatically adjusted as needed, and the overturning phenomenon caused by gravity centers of corn plants moving upward is prevented.

Description

technical field [0001] The invention relates to the technical field related to agriculture, in particular to a device for quantitative research and observation of corn root growth. Background technique [0002] Crop root architecture is an important agronomic and ecological indicator, which refers to the interconnection and spatial distribution of different levels of root growth media in the same root system, including root morphology, root topology, total root length, root distribution, Root length density and root growth rate, root occurrence and three-dimensional distribution in space, root growth angle and root torsion degree, etc. Maize is a cereal crop with high productivity per plant. Its root system is composed of primary roots and nodal roots. Its tall plants depend on the strong support of the root system and the absorption of water and nutrients. Therefore, an accurate understanding of the root system of current maize varieties The configuration is an important p...

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Problems solved by technology

[0004] Among them, the aeroponic method uses the current mature aeroponic technology to directly place the primary roots of corn seedlings in the nutrient solution mist, but ignores the importance of nodal roots for nutrient absorption, so the actual measured data and the actual data in the field There is a large difference. In order to solve this problem, the current method is to move the roots down by 15cm two weeks before the jointing of corn seedlings. Although this method can solve the growth problem of corn seedlings after jointing, it does not The growth state in the field cannot be completely simulated. The main reason is that as soon as the nodal root occurs, it can absorb nutrients and lose the power to continue growing downward into the soil. The data measured by the growing root system are obviously not representative. Sexual;

[0005] The plastic tube cultivation method can completely simulate and conform to the growth state of the root system in the field, but because the substrate in the plastic tube is not transparent, it is impossible to understand the growth of the corn root system at each stage;

[0006] The mesh bag method can fully simulate and conform to the growth state in the field, and the measured data is also the most representative of the three, but it is still impossible to understand the growth of the corn root system at different development stages, especially not suitable for large fields. Batch data collection

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