| 宁南黄土丘陵区旱作梯田水分利用率分析 |
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| 引用本文： | 万卓.宁南黄土丘陵区旱作梯田水分利用率分析[J].水土保持通报,1996,16(4):54-57. |
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| 作者姓名： | 万卓 |
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| 作者单位： | 固原县水保站 宁夏 固原 76000 |
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| 摘 要： | 依据在宁南黄土丘陵区半干旱气候地带梯田和坡地上进行的作物水分利用比较试验，分析了丰水年与欠水年和高肥与低肥条件下，作物的耗水量和水分利用率。结果表明，梯田丰水年与欠水年作物产量与水分利用率变化小，而坡地大。在高肥条件下，梯田作物耗水量为３２８．０ｍｍ，用水效率为０．２２７ｋｇ／ｍｍ；而坡地分别为２６２．２ｍｍ与０．２０８ｋｇ／ｍｍ。充分挖掘梯田增产潜力的出路在于增加投肥量。
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| 关 键 词： | 旱作梯田 水分利用率 投肥量 黄土丘陵区 |
| 收稿时间： | 4/1/1996 12:00:00 AM |
Analysis to Water Use Efficiency of Dry Farming Terrace in Loess Hilly Region of Southern Ningxia |
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| Wan Zhuo.Analysis to Water Use Efficiency of Dry Farming Terrace in Loess Hilly Region of Southern Ningxia[J].Bulletin of Soil and Water Conservation,1996,16(4):54-57. |
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| Authors: | Wan Zhuo |
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| Institution: | Guyuan Station of Soil and Water Conservation. 756000,Cuyuan County, Ningxia Hui Autonomous Region |
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| Abstract: | Based on the test conduted in smi-arid area of loess hilly region.the southern Ningxia,the water use of crop in man-made terrace and slope land was analyzed It shows that, the change of crop production and water use efficiency is smaller in terrace,either in full rainfall year or inshort rainfall year;but for slope land,it is greater.In terrace with highest fertility,the wateruse capacity is 328.0mm,its efficiency is 0.227kg/mm;but in slope land.under the samefertility condition,its figures are 262.0mm and 0 208kg/mm separately.The way out for in-creasing production fully in terrace is to increase the amount of fertilizer applying. |
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| Keywords: | terrace land with dry farmming water use efficiency the amount of fertilizer applying |
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