Groundwater buried depth abductive technique of desert plant seedling root system growth

Abstract

The present invention provides a buried depth of phreatic water level inducement technical method for the root system growth of the young seedling of desert plants. A constructed netting testing tank consists of tank wall, column piers, a steel wire netting and a water injection pipe and is filled with stones and earthwork, wherein, the tank wall is ensured to be watertight; the bottom of the tank is distributed with the column piers to ensure that the ground water can flow; the upside of the column piers is laid with the steel wire netting; the upside of the steel wire netting is laid with the stones firstly and then is filled with the earthwork layer by layer; a ground water table control testing area which has the thicknesses of earth layers of 100cm, 150cm, 200cm, 250cm and 300cm respectively is arranged to ensure that the ground water table is always kept at 45 to 55cm. The technical method testifies the relation between the working depth of the vertical root of the young seedling and the growth speed of the vertical root under the condition of different buried depths of phreatic water level, testifies the changing characteristic of the root system state of the young seedling along with the change of the ground water level and the water content of soil, testifies the distribution rule of the quality and the surface area of the root system of the young seedling in soil space and testifies the biomass allocation trend of the young seedling under the condition of different buried depths of phreatic water level. The technical method has reasonable design and strong operability. The testing tank can be molded by casting concrete or be made by laying with waterproof material in a concrete-brick structure.

Description

technical field [0001] The invention relates to the research on the ecology of plant roots, in particular to the technique of diving depth, and in particular to a technique of induction of diving depth suitable for the growth of roots of desert plant seedlings. Background technique [0002] With the deepening of ecological exploration and research, ecologists have increasingly realized that in the study of ecosystem structure, function and process, the uncertain element is the root system. Expansion of ecosystem theory and practice research. As we all know, the root system is an important functional organ for plants to absorb water and nutrients. An important feature of plants in arid areas during the process of adapting to the environment is to have a huge root system. Since the root system grows underground, it is difficult to study. Therefore, the root system of most plants Research is still blank. At present, there are patent No. 2006101340701 for the evaluation method...

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Problems solved by technology

However, it is very difficult to study the ecological characteristics of camel thorn root system under natural environmental conditions, because the underground part of a camel thorn plant is surrounded by 100-500 cubic meters of soil, and its roots can reach 12 meters or even 30 meters. deep, the test can only use seedlings as test materials

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