| 垄作沟灌土壤水盐分布及作物产量试验研究 |
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| 引用本文： | 董平国,王增丽,霍云云.垄作沟灌土壤水盐分布及作物产量试验研究[J].排灌机械工程学报,2016,34(10):904-909. |
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| 作者姓名： | 董平国 王增丽 霍云云 |
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| 作者单位： | 武威市中心灌溉试验站, 甘肃 武威 733000 |
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| 摘 要： | 对垄作沟灌土壤水盐分布及作物产量进行了田间试验.结果表明,灌水定额为400 m3/hm2时,沟底土壤水分的垂直运动明显增大.当灌水定额增加100 m3/hm2时,土壤水分水平运动高于垂直运动.沟底土壤全盐量受灌水定额影响明显:在灌水阶段,沟底表层土壤发生脱盐现象.土壤蒸发阶段,土壤发生积盐现象.垄顶土壤含盐量相对稳定,基本不发生向下运移.重度水分亏缺(处理T1,灌溉定额为1 700 m3/hm2)垄、沟积盐量分别为1.49,1.35 kg/m2,中度水分亏缺(处理T2,灌溉定额为2 100 m3/hm2)垄沟积盐量分别为1.42,1.12 kg/m2,充分灌水(处理T3,灌溉定额为2 500 m3/hm2)垄、沟积盐量分别为1.32,0.83 kg/m2,畦灌措施使0~100 cm土壤发生脱盐现象,脱盐量为1.29 kg/m2.垄作沟灌下,制种玉米产量为2 765.1~4 619.5 kg/hm2,WUE为0.755~0.969 kg/m3.穗长(Ls)、穗粗(ds)、行粒数(NR)与作物产量呈显著正相关关系.
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| 关 键 词： | 玉米 垄作沟灌 水盐分布 灌溉定额 产量 |
| 收稿时间： | 2016-01-12 |
Experiment study on soil water-salt distribution and crop yield with ridge tillage and furrow irrigation |
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| DONG Pingguo,WANG Zengli,HUO Yunyun.Experiment study on soil water-salt distribution and crop yield with ridge tillage and furrow irrigation[J].Journal of Drainage and Irrigation Machinery Engineering,2016,34(10):904-909. |
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| Authors: | DONG Pingguo WANG Zengli HUO Yunyun |
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| Institution: | Key Irrigation Experimental Station in Wuwei City of Gansu Province, Wuwei, Gansu 733000, China |
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| Abstract: | Field experiment was conducted to study on soil-salt distribution and crop yield with ridge tillage and furrow irrigation. The results showed that the vertical movement of soil moisture could be improved with 400 m3/hm2 of irrigation quota, while the horizontal movement of soil moisture was faster than the vertical movement with 500 m3/hm2 of irrigation quota. Soil salt was influenced by irrigation quota in furrow topsoil: salinity accumulation and eluviations occurred in irrigating and evapotranspiration respectively. Soil salification in topsoil was relatively stable, that was, the downward migration of soil-salt did not occur. Soil salt of T1 treatment(irrigation quota of 1 700 m3/hm2)was 1.49,1.35 kg/m2in ridge and furrow position respectively, that of T2 treatment(irrigation quota of 2 100 m3/hm2)were 1.42,1.12 kg/m2, that of T3 treatment(irrigation quota of 2 500 m3/hm2)was 1.32, 0.83 kg/m2. Soil desalting(1.29 kg/m2)occurred at 0-100 cm layer with border irrigation. Yield of seeding maize was between 2 765.1 and 4 619.5 kg/hm2, and WUE was between 0.755 and 0.969 kg/m3. There was significant positive correlation between crop yield and its factors, such as Ls,ds and NR. |
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| Keywords: | maize ridge tillage and furrow irrigation water-salt distribution irrigation quota yield |
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