Corn root system sampling device

Abstract

The invention discloses a corn root system sampling device comprising a front case and a rear cover. A groove is formed in the front shell; a first through hole is formed in the bottom of the shell; the first through hole communicates with the groove, a bearing plate is arranged in the front shell, a driving mechanism and a spraying mechanism are arranged above the bearing plate, a plurality of telescopic pressing parts are arranged below the bearing plate, shovels are arranged below the telescopic pressing parts, and swing parts are arranged on the shovels and are in contact connection with the telescopic pressing parts. The buried angle and the buried depth of the shovels can be ensured, and the digging of the corn root system is further ensured; meanwhile, the spraying mechanism can beused for cleaning the corn root systems so that sampling of the corn root systems can be further facilitated; in addition, the degree of damage of the sampling device to the root system in the corn farmland environment is reduced to the minimum, and the effective, feasible and reliable sampling device can be provided for analysis in the system to reduce errors in later measurement of pollutants.

Description

technical field [0001] The invention relates to the technical fields of environmental engineering and ecological engineering, in particular to an experimental device which takes corn as a research object, collects corn roots semi-automatically, and then measures the content of nitrogen, phosphorus and other pollutants therein. It is mainly used to mechanically collect the roots of the crops under the condition of maturity, to dig out the corn roots under the maximum conditions as much as possible and minimize the impact on the soil layer, so that the subsequent planting The living environment of the soil is basically the same as that before excavation, so as to ensure the progress of the whole experimental system. The device has a simple design and can be used for experiments or professional semi-automatic mechanical collection of corn roots, and is a low-cost, high-efficiency collection system that can be collected from the source. Background technique [0002] Corn is an ...

AI Technical Summary

Problems solved by technology

Within a certain range of nitrogen and phosphorus, increasing the content of nitrogen and phosphorus can significantly increase the yield of corn, but beyond this range, increasing the application of nitrogen and phosphorus fertilizers will not only fail to increase the yield, but will also cause environmental pollution

However, in order to pursue high yield, there is a phenomenon of excessive application of chemical fertilizers in my country's farmland system, and the annual nitrogen fertilizer use in some areas is even as high as 500kg / hm 2 , which not only leads to low fertilizer use efficiency, but also causes a series of environmental problems such as soil quality degradation, water eutrophication, and groundwater nitrate content exceeding the standard, which seriously threatens human health.

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