Water and fertilizer integrated greenhouse cucumber negative pressure irrigation system

Abstract

The invention discloses a water and fertilizer integrated greenhouse cucumber negative-pressure irrigation system which comprises a negative-pressure irrigation liquid seepage device, a liquid guide pipe, a liquid storage device, an air guide pipe and a negative-pressure regulator, wherein one end of the liquid guide pipe is connected with the interior of the negative-pressure irrigation liquid seepage device, and the other end of the liquid guide pipe is connected with the interior of the liquid storage device through a liquid guide hole in the side wall of the liquid storage device; the negative-pressure irrigation liquid seepage device is placed obliquely; the liquid storage device is filled with liquid fertilizers; one end of the air guide pipe is connected with the interior of the liquid storage device through the air guide hole, the air guide hole and the liquid guide hole are in a same horizontal position, and the other end of the air guide pipe is connected with the interior of the negative-pressure regulator; the negative-pressure regulator consists of a sealed container and an air inlet pipe; the air inlet pipe is a hollow straight-through pipe and is inserted into the sealed container after passing through the top part of the sealed container; the sealed container is filled with water, and a water level in the sealed container is lower than an air regulating hole. By applying the water and fertilizer integrated greenhouse cucumber negative-pressure irrigation system disclosed by the invention, the pressure of water supplied to cucumbers can be ensured to keep constant, and the fertilizers are provided according to the different growth periods of the cucumbers.

Description

technical field [0001] The invention relates to agricultural underground irrigation technology, in particular to a water and fertilizer integrated greenhouse cucumber negative pressure irrigation system. Background technique [0002] During the growth and development of crops, the soil is often difficult to provide the necessary moisture for crops. Therefore, in the process of modern agricultural production, supplementing the corresponding moisture to the soil through irrigation is an important part of agricultural production and management activities. [0003] Under the situation that the distribution of water resources in our country is extremely unbalanced at present, the use of underground infiltration irrigation technology is an effective way to improve the efficiency of water resources utilization. Among them, infiltration irrigation technology is a technology that uses plastic pipes to transport water to the root soil of crops through the orifice on the capillary or ...

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Problems solved by technology

[0004] However, in the current irrigation system for underground irrigation of cucumbers in greenhouses, the pressure of the irrigation head to supply water to the roots of the crops fluctuates within a certain range, and cannot maintain a constant water supply pressure, thus It cannot guarantee that the crops have been growing under stable soil moisture conditions; moreover, for different crops, fertilization and irrigation are carried out in the same way, and the irrigation methods using the crops cannot be provided for different crops

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