Plant cultivation device and method for collecting rhizosphere soil

Abstract

The invention discloses a plant cultivating device, which relates to the technical field of plant cultivating equipment. The plant cultivating device includes a box body, a root-separating net and several sampling inserts. The net divides the filling area into a root chamber and a non-root chamber. There are several micropores arranged on the mesh between the roots, and several sampling inserts are arranged in the non-root chamber. A sampling hole is arranged on each of the sampling inserts. All are face-fitting; the present invention also provides a kind of collecting method as above plant cultivating device, first install the root-separating net and sampling insert, then fill soil, fertilize, irrigate and plant plants, separate the root net, The sampling insert and the plugging insert are taken out from the filling area together, and then the soil in the sampling hole is sampled in layers, which can realize accurate sampling of the rhizosphere soil and reduce experimental errors.

Description

technical field [0001] The invention relates to the technical field of plant cultivation equipment, in particular to a plant cultivation device and a method for collecting rhizosphere soil. Background technique [0002] The rhizosphere refers to the soil area around the plant root system that is affected by root growth activities. It is generally a micro-area a few millimeters away from the root surface, and it is the necessary place for the exchange and transfer of nutrients between the root system and the external soil. and root exudates, the number of microorganisms in the rhizosphere increased, and their activities were significantly enhanced, making the physical, chemical and biological characteristics of rhizosphere soil significantly different from those of non-rhizosphere soil, forming a unique soil microecology; rhizosphere microecology has always been A research hotspot in the field of soil, the study of the effects of soil pollutants on soil microorganisms and soi...

AI Technical Summary

Problems solved by technology

[0003] The traditional methods for separating and collecting rhizosphere soil mainly include root shaking method and root bag method. The reproducibility of these two methods is not good, and they are easily affected by subjective factors such as operating strength and external factors such as plant species and soil. type, field humidity and other factors, and it is very easy to cause root hairs to remain or be mixed into non-rhizosphere soil, and it is impossible to accurately collect rhizosphere soil, so that the sampling results cannot reflect the real difference between rhizosphere and non-rhizosphere soil. In order to study or obtain distance root system People have designed square or circular root box culture devices for soils with different distances from the rhizosphere on the surface. However, the root-separating nets of these devices are not fixed, and it is easy to shift during the dry-wet alternate culture or sampling process, resulting in non-rhizosphere The soil is mixed into the rhizosphere soil area, and the experimental error is relatively large; in addition, the bottom of some cultivation devices is often airtight, so that users cannot perform irrigation and drainage operations reasonably according to the water level inside the cultivation device. When the temperature is high, it is easy to cause the rotten roots of the cultivated plants to die, so that the test is forced to be terminated.

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