Method for stably supplying soil moisture to plants with shallow root systems

Abstract

The invention relates to a method for stably supplying soil moisture to plants with shallow root systems. The moisture can be stably supplied to soil for the plants with the shallow root systems by the aid of cultivation grooves by the method. The method includes steps of preparing air-dried soil and fertilizers which are required by growth of the plants with the shallow root systems; filling prepared cultivation media into the cultivation grooves, parallelly placing upper microporous clay pipes and lower microporous clay pipes into the cultivation grooves; cultivating seeds or seedlings of the plants with the shallow root systems in the centers of the cultivation grooves; enabling the lower microporous clay pipes to automatically supply the moisture to the root systems under the effect of change of water potential of the soil. The method has the advantages that change of water potential of different position points of the soil inside the cultivation grooves can be instantly responded, and water can be timely supplemented, so that the soil moisture can be stably supplied to the shallow root systems at various layered depths and within various transverse ranges to be absorbed and utilized by the shallow root systems, and drought stress harm to the plants due to incapability of timely responding to deficiency of soil moisture can be prevented; an obvious water saving effect can be realized; fertilizer nutrient can be guaranteed against being lost to pollute surrounding soil and water sources along with flowing of the water.

Description

technical field [0001] The invention relates to a method for realizing stable soil 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 water use in the country's total water use is on a downward trend. Therefore, the key to the cu...

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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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