A cultivation tank for realizing the stable supply of soil moisture for shallow-rooted plants

Abstract

The invention relates to a cultivation groove capable of stably supplying soil moisture to plants with shallow root systems. The cultivation groove comprises a groove. The upper end of the groove is open while the lower end of the groove is closed, cultivation media are filled in the groove, an upper microporous clay pipe is arranged in the groove and is positioned in the certain cultivation media, the certain cultivation media are separated from the upper end surface of the groove by the distances ranging from 5cm to 10cm, a lower microporous clay pipe is arranged below the upper microporous clay pipe and is separated from the upper microporous clay pipe by a certain distance, and the upper microporous clay pipe and the lower microporous clay pipe are horizontally arranged in the groove, are respectively parallel to the upper end surface and the lower end surface of the groove and are jointly communicated with an external water supply device. The cultivation groove has the advantages that change of water potential of different position points in soil in the cultivation groove can be responded instantly, so that water can be timely replenished and can flow to optional positions in the groove in a permeation manner under the effects of capillary pipes, the soil moisture can be stably supplied to the plants, the water required by the plants can be truly dynamically and stably supplied to the plants, and drought stress injury to the plants due to the fact that soil moisture is deficient but cannot be timely responded can be prevented.

Description

technical field [0001] The invention relates to an irrigation device for maintaining the normal growth of crops, in particular to a cultivation tank for maintaining the stable water supply of shallow root plants, belonging to the field of agricultural science and technology. Background technique [0002] Water is the lifeblood of human beings and a necessary condition for the normal growth of plants. Against the background of global warming, regional droughts and periodic droughts occur frequently, and under the severe situation of increasingly scarce water resources, water conservation and efficient water use are the themes of agricultural production and even various industries around the world. At present, the national agricultural irrigation water is about 350 billion m 3 / a or so, accounting for 90% of the total agricultural water use and 63% of the national total water use. Due to the rapid increase of urban and industrial water use, the proportion of agricultural wat...

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Problems solved by technology

[0005] Another example is a negative head irrigation system disclosed in Chinese patent document CN1788542A (patent number: 200510123974.X), a negative pressure automatic irrigation basin disclosed in Chinese patent document CN201830706U (patent number: 201020528940.5), and a negative pressure automatic irrigation basin disclosed in Chinese patent document CN101185413A (patent number: 200710178527.3) discloses a device for automatically controlling the constant soil water potential. The water supply tray or water supply pipe of the above device is set at the bottom of the root system, and there is no design of different soil moisture stable supply cultivation devices according to the characteristics of the specific plant root system and the operation of the realization technology method, it is impossible to study the stable supply of water and nutrients of different plants to the maximum extent, and the structure is complex, the operating cost is high, and the timely demand for water by the root system cannot be met, which affects the normal growth of plants

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