Soilless cultivation in glass greenhouse
Have you ever seen a "sky garden" in a greenhouse? Vegetables are not grown in the soil, but in a pipe groove about 1 meter above the ground. This new mode of vegetable cultivation uses soilless cultivation in glass greenhouses to produce pollution-free green vegetables.
In the glass greenhouse, more than 10 semi-open pipe grooves about 1 meter high are criss-crossed, and the rows of green quick cabbage are arranged neatly, and the distances are roughly the same. When I opened a quick cabbage about 15 centimeters high, I discovered the mystery. The quick cabbage was planted in the regularly spaced round openings on the pipe groove. There was no soil in it, only a little flowing water. Vegetables are grown off the ground, relying on these nutrient waters to continuously supply nutrients to them.
The integrated water and fertilizer pipe tank for fast cabbage is composed of three systems of liquid supply, drainage and circulation return. The nutrient solution is pressurized by the water pump to deliver the nutrient solution to each pipe tank, and then passes through the drainage system and the circulation return system. Drain the useless liquid, and then return the excess nutrient solution to the nutrient pool, and re-pressurize the supply to form an uninterrupted supply mode of recycling. The nutrient pool is equipped with a time interval, which can control the working time of the water pump, thereby improving the scientificity of the infusion.
