| Cite this article: | 郭同铠,毛伟兵,孙玉霞,等.泥沙对粘质盐土水分特性及小麦产量的影响[J].灌溉排水学报,0,():-. |
| Guo Tong-kai,Mao Wei-bing,Sun Yu-xia,et al.泥沙对粘质盐土水分特性及小麦产量的影响[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Effect of Sediment on Water Characteristics of Clay Saline Soil and Wheat Yield |
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Guo Tong-kai, Mao Wei-bing, Sun Yu-xia, Qv Ying-jie, Wu Jia-li
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College of Water Conservancy and Civil Engineering,Shandong Agricultural University
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| Abstract: |
| 【Objective】 In order to determine the influence of different amounts of sediment on the water condition of clayey saline soil and winter wheat yield, and to explore the most suitable sediment composition, 【Method】 The indoor pressure film method was used to determine the soil moisture characteristic curve and to conduct field winter wheat experiments. The soil moisture characteristic curve, soil moisture constant, soil moisture form, soil moisture availability, field soil moisture change and winter wheat yield are analyzed. 【Result】 Sediment has a significant effect on reducing the soil moisture characteristic curve. Under the same water suction, the soil moisture content decreases with the increase of sediment content. The high sediment content (>17.82%) soil moisture constant and soil moisture availability index accord with linear regression, which can be expressed by equation. Low sediment content (<17.82%) has a significant positive impact on soil moisture constant and soil water availability index. The treatment of soil moisture status index with 4.10% sediment content is conducive to soil water saving, soil water movement and soil water availability. The treatment with the highest value of total winter wheat yield in three years was the treatment with 150 t/hm2 (treatment with 4.10% of the sediment amount), which increased the yield by 35.27% compared with the control group. 【Conclusion】 Sediment can effectively improve soil moisture status, and the optimal ratio for increasing winter wheat yield in this area is 150 t/hm2. |
| Key words: clay solonchak; sediment; soil moisture characteristics; winter wheat yield; soil moisture characteristic curve |
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