Saline-alkali land clayey soil field salinity regulation and control method

Abstract

The invention discloses a saline-alkali land clayey soil field salinity regulation and control method. The method comprises the steps that average water content of soil 0.5 deep is determined through selecting a saline-alkali land parcel and constructing lateral seepage prevention facilities and water drainage and salt elimination facilities, salt water mineralization degree blending is conducted through utilizing a linear relation between the salt water mineralization degree and soil total salt content, and the blended salt water is used for conducting irrigation, so that the soil salt content reaches a preset concentration, and the purposes of gradient salinity identification and selection of salt tolerance of crops are achieved. The saline-alkali land clayey soil field salinity regulation and control method is simple, convenient and easy to operate, and the method has a larger usage value in saline-alkali land selection of salt-tolerant crops and salt-tolerant crop breeding application.

Description

technical field [0001] The invention belongs to the technical field of saline-alkali land utilization, and relates to the identification and screening of salt-tolerant crops, in particular to a field salinity control method for clayey soil in saline-alkali land. Background technique [0002] Saline-alkali land is an important reserve resource of land in my country. my country's saline-alkali land is mainly distributed in 17 provinces including Northwest, Northeast, North China and coastal areas, with a total area of ​​more than 500 million mu. Coastal saline-alkali land is a typical type, which is affected by soil parent material and seawater erosion, and is quite different from inland saline-alkali land. The main component of salt content is sodium chloride. Sustainable agricultural development is of paramount importance. [0003] The identification and screening of crop salt tolerance is the basis for the selection of salt-tolerant crops. At present, the identification me...

AI Technical Summary

Problems solved by technology

The above-mentioned known technologies mainly use salt solution preparation, rain-proof shelter facilities, and carry out salt-tolerant identification and salt-tolerant crop screening of crops through hydroponics, sand culture, etc., and are mainly aimed at the salt-tolerant identification and salt-tolerant screening of crops at the seedling s...