| Cite this article: | 王航,周青云,张宝忠,等.不同灌水处理下滨海盐碱地土壤-玉米阳离子变化规律及相关关系研究[J].灌溉排水学报,0,():-. |
| Wang Hang,Zhou Qing-yun,zhangbaozhong,et al.不同灌水处理下滨海盐碱地土壤-玉米阳离子变化规律及相关关系研究[J].灌溉排水学报,0,():-. |
|
| |
|
|
| This article has been：Browse 2527Times Download 0Times |
|
|
|
| DOI： |
|
| Study on the Change Laws and Correlation under Different Irrigation Treatments on Soil-Maize in Coastal Saline Alkaline Land |
|
Wang Hang1, Zhou Qing-yun1, zhangbaozhong2, yinlinping3
|
|
1.Tianjin Agricultural University;2.State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research;3.College of Water Conservancy Engineering, Tianjin Agricultural University
|
| Abstract: |
| 【Background and objective】Salinity is an important abiotic environmental stress that threatens agricultural productivity around the world. The farmland soil in the coastal area has been affected by sea water and highly salinized groundwater for a long time, and the soil salinization is serious, which has become the main factor restricting the sustainable development of agriculture in the region. In order to explore the change law and correlation between the soil and corn cations in coastal saline-alkali soil under different irrigation treatments. 【Method】For the purpose of different irrigation treatments, the composition of cations in coastal saline-alkali soil-maize and their correlations, studying the relationship between K+, Ca2+ and Na+ in the root layer soil and crops under different irrigation treatments in coastal saline-alkali land and establishing the mathematical relationship between them can provide a certain theoretical basis for the management of coastal saline-alkali land. Field experiments were used to study the effects of different drip irrigation methods in coastal saline-alkali soils on K+, Ca2+, Na+ in the root layer soil and K+/Na+ in crops. A total of 4 treatments were designed, each treatment was repeated 3 times, namely conventional drip irrigation treatment (LI10) with an irrigation quota of 10 mm and an irrigation quota of 20 mm for conventional drip irrigation. Treatment (LI20), drip irrigation under the mulch with an irrigation quota of 10 mm (FI10), and drip irrigation under the mulch with an irrigation quota of 20 mm (FI20), and the regression models of K+/Na+, Ca2+ and root layer soil K+, Ca2+, Na+ were established respectively. 【Result】The drop of the relative content of Na+ in the soil under the drip irrigation treatment is much greater than that of the conventional drip irrigation treatment after irrigation. Under the mulch drip irrigation with a larger irrigation amount, the K+/Na+ in the stems during the whole growth period are all larger, and the leaves under the mulch drip irrigation in the early stage of growth are larger in K+/Na+. The K+/Na+ and Ca2+ concentrations in the root layer soil of the conventional drip irrigation treatment have a greater impact on the root K+/Na+ compared with the drip irrigation treatment under the mulch; The increase of Ca2+ in the root layer soil by conventional drip irrigation and drip irrigation under mulch can inhibit the increase of root K+/Na+ by inhibiting the increase of root layer soil K+/Na+.【Conclusion】 The use of drip irrigation technology in coastal saline-alkali land can effectively improve the distribution of cations in the soil and corn. Among them, drip irrigation under mulch is more conducive to improving the salt and alkali resistance of corn than conventional drip irrigation. |
| Key words: coastal saline soil; drip irrigation method; soil cation; corn cation; regression model |
|
|
|
|
|
|
