Plant salt tolerance identification pond and use method thereof

Abstract

The invention discloses a plant salt tolerance identification pond and a use method thereof. The plant salt tolerance identification pond structurally comprises a salt tolerance identification pond and a salinity regulating pond. The salt tolerance identification pond internally comprises a saline soil layer, a sand layer, a stone layer and a water seepage pipeline from top to bottom. A water level observation pipe is arranged on the top of the saline soil layer, saline water is contained in the salinity regulating pond, and a water level regulating device is arranged above the salinity regulating pond. Graduated scales with the minimum scale of 0.5 mm are marked in the pond walls of the salt tolerance identification pond and the salinity regulating pond. The saline water can be formed by diluting seawater or extracting saline-alkali soil or is manually prepared. The use method of the plant salt tolerance identification pond includes the steps of salt tolerance identification pond land leveling and plastic film mulching, salinity regulating pond saline water adding, plant material preparation, soil salinity regulating and keeping and salt damage evaluation. The defects that an existing salt pond is uncontrollable in soil salt content and poor in stability are overcome, and the accuracy of a plant salt tolerance qualification test is improved.

Description

technical field [0001] The invention is applied to related technical fields such as screening and identification of plant salt tolerance, and specifically relates to a plant salt tolerance identification pool and a use method thereof. Background technique [0002] The area of ​​salinized land in the world has reached more than 400 million hectares. Soil salinization has inhibited plant growth, resulting in large-scale crop yield reduction, and even grain failure, posing a serious threat to agricultural production. The salt tolerance of different plant species and varieties is quite different. Identifying the salt tolerance of plants and screening plant species or varieties with strong salt tolerance for planting in saline soil can effectively reduce the harm of soil salinization to agricultural production. [0003] At present, there are many studies on the screening of plant salt tolerance at home and abroad, and most of them use single salt (such as NaCl) or double salt (su...

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Problems solved by technology

[0003] At present, there are many studies on the screening of plant salt tolerance at home and abroad, and most of them use single salt (such as NaCl) or double salt (such as NaCl and NaCl) through hydroponics. 2 CO 3 ) to simulate salt stress, and due to the variety of saline soil types, the influence of saline soil on plant growth is also very complicated, and there is often a certain gap between the identification results of hydroponic methods and the actual

At the same time, the existing methods of screening and identifying plant salt tolerance through salt ponds also have many shortcomings, such as uncontrollable soil salinity, poor stability, low experimental efficiency, and large errors

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