Drip Irrigation Technology of Grape in greenhouse

Drip irrigation is the most ideal technology for grape irrigation in greenhouse. It has the advantages of water saving, increasing production, cooling, labor saving and high efficiency. 1. Simple drip irrigation production: a storage tank with a capacity of 3-5 cubic meters and a height of 1-3 meters is built at the head of the shed, a gate valve and a water meter are installed at the outlet of the pool, and a 38 mm plastic pipe is used as a capillary pipe in the shed to connect with the outlet pipe of the pool. There are two forms of branch and capillary arrangement: 1. Laying capillary along the length of the shed: the branch pipe is vertically connected with the capillary with a 25mm plastic pipe at the entrance of the shed, and a gate valve is installed on the branch pipe. In the shed, a plastic pipe with a diameter of 15-20 mm and a length equal to the length of the shed is installed every 1 meter apart, parallel to the capillary tube and perpendicular to the branch pipe. A plastic capillary with a hole distance of 35 cm and a pore diameter of 1.0-1.3 mm is arranged on the pipe wall to form a simple drip irrigation network system, which is covered with plastic film and vegetables are planted between the films. The advantage of this arrangement is that it is easy to operate and manage. 2. Laying capillary along the span of the shed: use several porous plastic capillary whose length is 4 times as long as the span of the shed, the first end is connected with the branch pipe on the side of the shed, the parallel shed span is bent and arranged in 4 channels, the pipe is covered with plastic film, and vegetables are planted between the films. The advantage of this arrangement is that the vegetables in the shed have sufficient sunshine, which is conducive to growth and development. Second, the main characteristics of simple drip irrigation used in greenhouse grapes: 1. Saving water: according to tests, the utilization rate of simple drip irrigation reached 95%, 98%, 45% less than sprinkler irrigation, and 60% less water than surface irrigation. 2. Low cost: simple drip irrigation invests more than 500 yuan per 667 square meters (1 mu), which is the investment of grape micro-spraying technology. 3. Raise the greenhouse temperature: the greenhouse temperature of simple drip irrigation is about 5 ℃ higher than that of flood irrigation, which makes the grapes come on the market about half a month earlier. 4. it is easy to remove the blockage: the effluent capillary of simple drip irrigation is placed on the surface, the clogging problem is easy to be found, and the local hole blockage can also be dealt with at any time. 5. save fertilizer: all the chemical fertilizers applied by vegetables in the greenhouse are put into the pool and applied to the soil layer of the crop rhizosphere with water droplets to avoid the loss, leakage and volatilization of fertilizer.