Analysis to Water Use Efficiency of Dry Farming Terrace in Loess Hilly Region of Southern Ningxia

Wan Zhuo

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Analysis to Water Use Efficiency of Dry Farming Terrace in Loess Hilly Region of Southern Ningxia

- Analysis to Water Use Efficiency of Dry Farming Terrace in Loess Hilly Region of Southern Ningxia
- Bulletin of Soiland Water Conservation Vol. 15, Issue 4, Pages: 54-57(1996)
- 作者机构：
  
  固原县水保站,宁夏,固原,76000
- 作者简介：
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- Published：1996
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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 Soiland Water Conservation, 1996, 15(4): 54-57.
DOI：

Wan Zhuo. Analysis to Water Use Efficiency of Dry Farming Terrace in Loess Hilly Region of Southern Ningxia[J]. Bulletin of Soiland Water Conservation, 1996, 15(4): 54-57. DOI：

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262.0mm与0.208kg/mm.充分挖掘梯田增产潜力的出路在于增加投肥量。

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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