| 引用本文: | 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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| 摘要: |
| 【目的】为确定不同泥沙量对粘质盐土水分状况以及冬小麦产量的影响,探索最适宜泥沙配,【方法】采用室内压力膜法测定土壤水分特征曲线并且进行田间冬小麦试验,研究了土壤水分特征曲线、土壤水分常数、土壤水分形态、土壤水分有效性、田间土壤水分变化和冬小麦产量。【结果】泥沙对土壤水分特征曲线有明显降低作用,同一水吸力下,土壤含水量随泥沙量增加而降低。高泥沙量(＞17.82%)土壤水分常数和土壤水分有效性指标符合线性回归,可以用方程表示。低泥沙量(＜17.82%)对土壤水分常数和土壤水分有效性指标有显著积极影响,4.10%泥沙量处理土壤水分状况指标有利于土壤节水、土壤水分运动和土壤水分有效性提高。三年冬小麦总产量最高值处理为150 t/hm2处理(4.10 %泥沙量处理),比对照组增产35.27 %。【结论】泥沙可以有效改善土壤水分状况,该区域冬小麦产量提高的最优配比为150 t/hm2。 |
| 关键词: 粘质盐土;泥沙;土壤水分特性;冬小麦产量;土壤水分特征曲线 |
| DOI： |
| 分类号:S156.4 |
| 基金项目:山东省重点研发计划(2019GSF109014) |
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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 |
