| Effects of compound conditioner on the improvement of heavily alkalized soil |
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| DOI：10.7606/j.issn.1000-7601.2026.03.21 |
| Key Words: compound conditioner alkalized soil salinity soil pH Hetao irrigation district |
| Author Name | Affiliation | | WANG Ding | College of Resources and Environment, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | CHEN Xiaolong | College of Resources and Environment, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | WANG Zixuan | Gansu Nonferrous Engineering Survey and Design Research Institute, Lanzhou, Gansu 730070, China | | FENG Yonglin | Gansu Desert Control Research Institute, Lanzhou, Gansu 730070, China | | LI Yuejin | College of Resources and Environment, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010019, China | | LIU Xuelu | College of Resources and Environment, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | CHU Run | College of Resources and Environment, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| To study the regulatory effects of different compound conditioners on the base ions in the root zone of crop growth, the heavily alkalized soil in the Hetao Irrigation District of Inner Mongolia was taken as the research object. Four different types of compound conditioning agents were compounded by MB-10 mixed resin, calcium silicate, desulfurization gypsum, bentonite, humic acid, and polyacrylamide\|inorganic mineral composite water\|retaining agent in different proportions. Field experiments were conducted to analyze the effects of different levels of application of four compound conditioners on soil pH, alkalization degree, total salt content, and base ion content. The results showed that after applying the desulfurization gypsum type compound conditioner at medium and high levels, both soil pH and alkalinity degree decreased significantly, with the reductions ranging from 0.54 to 1.21 and 28.9% to 63.6%, respectively. The soil alkalinity changed from severe to moderate to mild. The other three compound conditioners had no obvious effect on improving soil alkalinity. During the seedling stage of sunflowers, the application of calcium silicate type compound conditioner at different levels significantly reduced the total soil salt content, with a reduction rate ranging from 39.3% to 60.2%. The polymer adsorption type compound conditioner has a certain adsorption effect on Na+ and Cl- in the soil. After the application of calcium silicate type compound conditioner, the contents of Na+ and Cl- in the soil also decreased to varying degrees. After the application of the desulfurization gypsum\|based compound conditioning agent, the contents of CO2-3 and HCO-3 decreased to varying degrees. Therefore, it can be concluded that the desulfurization gypsum type compound conditioner has a significant inhibitory effect on soil alkalinity and is recommended for medium level application. Polymer adsorption type compound conditioner and calcium silicate type compound conditioner have certain removal effects on Na+ and Cl- in the soil. It is recommended to apply them at a low level. |
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