Greenhouse crop irrigation system and method with ideal regulation and control effect

Abstract

The invention relates to a greenhouse crop irrigation system and method with an ideal regulation and control effect. The greenhouse crop irrigation system is characterized by comprising a bracket, a water accumulation device, an irrigation pipe network, a waterhead lifting device and a controller; the bracket is formed by connecting four lower support columns and four upper support columns through inserted links and circular holes; the water accumulation device comprises a water tank fixed on the top end of the bracket, a sensor for monitoring the water level height is arranged in the water tank, a water delivery header pipe is connected to one side of the water tank and the other side of the water tank is communicated with the irrigation pipe network; the irrigation pipe network comprises a branch pipe and a plurality of capillary pipes arranged on the branch pipe at intervals, wherein the tail ends of all the capillary pipes are connected with an air exhaust pipe; a plurality of irrigation emitters are arranged on each capillary pipe at intervals, wherein a plurality of capillary pipe bundles are arranged in an irrigation pipe at the lower part of each irrigation emitter; a humidity sensor is arranged in soil below the irrigation emitters; the waterhead lifting device consists of a pulley block and a water tank digging rope connected with the water tank; and the controller is respectively and electrically connected with the water level sensor, a water intake valve and the humidity sensor. The greenhouse crop irrigation system and method can be widely applied to the irrigation process of various greenhouse crops.

Description

technical field [0001] The present invention relates to an irrigation system and method, in particular to an irrigation system and irrigation method for greenhouse crops that can be ideally regulated and irrigated according to the water requirements of different crop types and different crop growth stages. Background technique [0002] For crop growth, there is an optimal threshold of soil moisture, and the optimal threshold of different crops in different growth stages will be obviously different, but the current irrigation system cannot make the soil moisture in the root zone of crops reach the target control threshold. Moreover, the water that crops can actually absorb from the roots during the growth process is very little, but they are continuously absorbing water, so they need to be continuously supplied with water, which is the real effective water supply. The soil itself has a strong water storage capacity, and nature uses the water stored in the soil to provide effe...

AI Technical Summary

Problems solved by technology

[0003] The traditional irrigation method is to maximize the use of the water storage function of the soil. The method of flood irrigation is used to store sufficient water for the soil. After a long period of time, the stored water in the soil will be used to maintain the growth of plants. At the same time, the water in the soil Most of the stored water will be evaporated and leaked, and the waste of water resources is extremely serious

At present, the method of drip irrigation can effectively save water resources, and the development level of drip irrigation at home and abroad is getting higher and higher. However, the minimum water output speed of drip irrigation emitters is more than 2 liters per hour, which is far greater than the actual water demand of plants. Speed, water use efficiency is not high, although the waste of water resources has been alleviated compared with other irrigation methods, there will still be a lot of waste

In addition, the power drive system of drip irrigation is relatively complicated, and the drip pipe is prone to blockage, which makes the operating cost of the drip irrigation system relatively high, and it is not economical to use for a long time

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