Root-divided alternative irrigation method adopting zeolite salt isolation layer and application of method to planting Taxodium Zhongshanha in saline-alkali soil

Abstract

The invention provides a root-divided alternative irrigation method adopting a zeolite salt isolation layer. The method includes the step of laying the salt isolation layer. A tree leaf layer, a rubble layer, a fine stone layer and a nutrient layer are sequentially laid on the salt isolation layer from bottom to top. The invention further provides application of the root-divided alternative irrigation method adopting the zeolite salt isolation layer to planting Taxodium Zhongshanha in saline-alkali soil. By means of the root-divided alternative irrigation method, the irrigation water amount per mu is reduced by 40-50% compared with the common irrigation water amount, and salification and salt return of a planting area soil root layer are greatly limited, so the salt content in 0-60 cm of planting area soil is 0.08-0.12%. Unnecessary transpiration of plants is greatly reduced. Taking Taxodium Zhongshanha as an example, the transpiration speed of Taxodium Zhongshanha is reduced by 17-26%.

Description

technical field [0001] The invention belongs to the technical field of irrigation, and in particular relates to a root-splitting alternate irrigation method using zeolite salt barrier and its application in planting Zhongshan fir in saline-alkali land. Background technique [0002] At present, the shortage of water resources, like population, environment and energy issues, has become one of the four major crises faced by many countries and regions. It is urgent to establish a water-saving society, improve the efficiency of water resource utilization, and ensure the sustainable development of water resources. According to recent estimates, the world's total water storage is 1.4×109km3, of which fresh water is 3.5×107km3, accounting for only 2.5% of the total reserves, and my country's freshwater resources account for 8% of the world's total. The total amount of water resources in my country is relatively rich, the total amount is 2.8×1012m3, of which the surface water is 2.7×...

AI Technical Summary

Problems solved by technology

[0004] 1. Using the existing irrigation method, the irrigation water consumption per mu is high;

[0005] 2. Using the existing irrigation method, the phenomenon of salt accumulation and salt return in the root layer of the soil is serious, and the salt content of the soil is high;

[0006] 3. Using the existing irrigation method, the plant transpiration rate is high, and more fresh water resources are wasted due to unnecessary transpiration

[0007] 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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