Drip-irrigation tree cultivation method on severe alkaline land

Abstract

The invention provides a method for cultivating trees in heavy degree saline and alkaline land through dripping irrigation, which comprises ridging, planting and irrigation management. The method comprises: A, a step of manual ridging, in which the ridge height is 60 centimeters, the width of ridge top is 60 centimeters, and the ridge spacing is 300 centimeters, and the plant spacing is 200 centimeters; B, a step of planting, in which holes with a diameter of between 30 and 50 centimeters and a depth of between 30 and 50 centimeters are dug in the planting process, non-saline and alkaline soil dressing is filled in the holes after saplings are planted and fixed in the holes, and films are covered on the land; C, a step of drip irrigation zone setting, in which the center of each ridge is provided with a single-ridge single-strip drip irrigation zone and the drop spacing is 10 to 50 centimeters; and D, a step of drip irrigation, in which the land is irrigated initially on the same day of planting, the amount of water used for irrigation is four times of that of water used for daily irrigation, after that the land is irrigated one every other 1 to 2 days, with 4 to 5 millimeters of water each time. The method adopts ground irrigation and tree root soil replacement, and forms desalting areas at the root parts of the trees and ensures the normal growth of the trees. The method solves the problem that the soil structure of the saline and alkaline soil with a high sodium ion content is damaged after leaching, keeps the good soil structure of soil dressing during salt leaching and provides a good growing environment for the trees.

Description

technical field [0001] The invention relates to a method for planting trees by drip irrigation in severe saline-alkali land, and belongs to the technical field of saline-alkali land management and planting. Background technique [0002] Saline-alkali land is an important land resource for agricultural development and utilization. According to the second soil census in my country, the area of ​​saline-alkali land resources in China is nearly 100 million hm 2 , of which the modern saline-alkali soil area is about 37 million hm 2 , the remaining saline soil is about 42 million hm 2 , the potential saline soil is about 17 million hm 2 . Saline-alkali soil contains excessive salinity, toxic substances, excessive alkalinity and poor soil properties, which inhibit the growth of plants, making it difficult for plants to grow on saline-alkali soil, forming a large area of ​​saline-alkali wasteland, and the ecological environment is poor. But with the decrease of available land r...

AI Technical Summary

Problems solved by technology

At present, the usual way to control soil salinity is to wash the soil with a certain amount of water, but for saline-alkali soil with high sodium ion content, after salt washing, the soil structure will be destroyed while the salt content is reduced, making it airtight Without water, it is difficult for plants to survive

There are other methods for chemical improvement of saline-alkali land. Adding chemical improvers has quick results, but it is easy to introduce ions, which will increase the salt content in the soil. In addition, capital and technical requirements make it difficult to implement on a large scale

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