Salt-water and fresh-water root-divided alternative irrigation method and application of irrigation method to planting of tall ligustrum lucidum in saline and alkaline land

Abstract

The invention provides a salt-water and fresh-water root-divided alternative irrigation method. A salt isolating layer is adopted, sequentially comprises a rubble layer, a reed layer, a fine stone layer and a mixed soil layer from bottom to top, and is laid on a planting area. The upper surface of the salt isolating layer is 100 cm to 140 cm away from the earth surface. The rubble layer is prepared fromvermiculite, ceramsite and coarse sand, the fine stone layer is prepared from powdered rock phosphate, biogas residues and wheat bran, and the mixed soil layer is prepared from Luzhao soil and Chiyu soil. The invention further provides an application of the salt-water and fresh-water root-divided alternative irrigation method to planting of tall ligustrum lucidum in saline and alkaline land. By means of the root-divided alternative irrigation method, the growing speed of plants is increased, and the medical value of plants is increased; taking tall ligustrum lucidum as an example, the content of ursolic acid in fruits of tall ligustrum lucidum is 30% to 33%; the capacity of absorbing toxic gas of plants is improved, and the environment is purified.

Description

technical field [0001] The invention belongs to the technical field of irrigation, and in particular relates to a root-split alternate irrigation method using salt water and fresh water and its application in planting tall privet privet in saline-alkali land. Background technique [0002] Salt water, as opposed to fresh water, refers to water that has more sodium chloride (NaCl, and usually other salts) dissolved in it. It mainly includes seawater and some lakes (saltwater lakes). Due to poor water quality and extremely poor taste, it is even undrinkable. Many of the indicators do not meet or fail to meet the national "Drinking Water Hygienic Standards". The characteristics of high iron manganese, low iodine, and low selenium have seriously affected the quality of life and health of the local people for many years. [0003] Water with a mineralization degree of 3-10g / L, such as the surface water of salt lakes in inland arid areas, silt water, ocean, and bay water, contains...

AI Technical Summary

Problems solved by technology

[0005] 1. The existing irrigation methods plant plants, and the plant roots grow slowly;

[0006] 2. Plants grown using existing irrigation methods have low medicinal value;

[0007] 3. Plants grown using existing irrigation methods have poor ability to absorb toxic gases and are not enough to purify the environment

[0008] In summary, there are obviously inconveniences and defects in the actual use of the existing technology, so it is necessary to improve

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