Grape roots limit the precise supply of fertilizer

The root zone restriction is the use of physical or ecological methods to limit the growth of grape roots within a certain volume range, and to regulate the growth, fruit setting and fruit quality formation of shoots in the shoot by regulating the growth environment, nutrients, and moisture supply of the root system.

In the past, farmers often used the techniques of “deep deep hole planting, deep arable land, and wide-fertilizer cultivation” to make the quality of the fruit difficult to raise. The restriction of the root zone broke through the traditional cultivation theory of “deep tree roots” and “deep rooted leaves.” Years of research have shown that grape growth does not necessarily have to be “deep in root” to “leaf a leaf”, and limiting the range of root growth can also be “leaving”.

The groundwater level in the southern area is high, and the root system is distributed in the soil layer with water accumulation. It often absorbs too much water, which affects the sugar content of the fruit and the formation of pigment in the skin. This is because the ripe fruit has low sugar content, poor coloration and low taste. The main reason. The use of plastic film and other materials limits the root growth to a narrow range. The root system cannot extend beyond the root zone to absorb water. Fertilizer nutrients placed in the upper layer of the root zone can also be fully absorbed by the dense root system and rarely lost.

Therefore, the precise supply of water and nutrients according to the growth and development needs of the grapes can be used to control the growth, fruiting and fruit quality of the shoots on the ground. In the northern regions, this technology can be used to grow wine grapes and save water and fertilizer. At the same time, it is also possible to use the technology to locally grow wine in the saline-alkali land through the root zone, and to rationally develop and utilize the resources of the saline-alkali land.

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