'Hanging gardens' - New technology for safe vegetable production

The group of scientists from Hanoi Agricultural University No. 1 has just released a method of producing safe vegetables using high technology without using soil.

(Photo: TTO)

At the display place, viewers can witness many kinds of vegetables such as water spinach, lettuce, herbs, tomatoes . grown on flat shelves about 1 to 2 m ^{2 wide} , which are placed on the ground. , the gentle slant is placed on the side to create a posture like a land on a hillside. The prices are simple, quite compact and can be moved to make people think and liken it to "hanging gardens".

The upper part of the "hanging garden" is a piece of porous plastic that has many small holes carved into it to make the tree planting hole. Below, the bottom is made of materials capable of keeping water with a solution for growing plants (multi-micro, micro-fertilizers) such as plastic, corrugated iron or fibro-cement . Particularly with "hanging gardens" in Sloping posture, in the lower part, it is necessary to have a device to catch water and return it by manual method or by machine if conditions permit.

According to Associate Professor, Dr. Ho Huu An, this is a high technology to produce clean vegetables, which has been studied in the US for a long time and is now applied and Vietnameseized to suit our country's conditions . According to this technology, sowing and growing vegetables absolutely does not need soil. For plants to grow, fertilizer (in liquid form produced by Agricultural University I) uses more than 10 multi-elements, micronutrients are essential elements, along with clean water sources such as well water . enough Ensure plants grow as in normal conditions. With this technology, vegetable growers can be completely controlled, not allowing vegetables to be contaminated with heavy metals, and other toxins.

This technology has a wide range of applications . It can be applied to large-scale, sheltered or outdoor vegetable growing facilities, which can also be used for each household even on balconies and terraces of urban high-rise buildings. . Especially, in places where natural conditions are not favorable for cultivation such as people and soldiers in Truong Sa island district, border posts . this technology will open a good ability to overcome the shortage. Vegetables in daily meals.