宁夏灌区压减水稻面积对水环境的影响

doi:10.14088/j.cnki.issn0439-8114.2021.19.006

湖北农业科学 ›› 2021, Vol. 60 ›› Issue (19): 25-29.doi: 10.14088/j.cnki.issn0439-8114.2021.19.006

宁夏灌区压减水稻面积对水环境的影响

郑方^1,2, 马力文^1,2, 赵慧^1,2

1.中国气象局旱区特色农业气象灾害监测预警与风险管理重点实验室,银川 750002;
2.宁夏气象防灾减灾重点实验室,银川 750002

收稿日期:2021-04-20 出版日期:2021-10-10 发布日期:2021-10-22
作者简介:郑方（1980-）,男,宁夏盐池人,工程师,主要从事旱作农业气候资源研究工作,（电话）13895598328（电子信箱）178067856@qq.com。
基金资助:
中国气象局旱区特色农业气象灾害监测预警与风险管理重点实验室指令性项目（CAMP-202008）; 宁夏自然科学基金项目（2018AAC03206）

Effect of reducing rice planting area on water environment in Ningxia irrigation area

ZHENG Fang^1,2, MA Li-wen^1,2, ZHAO Hui^1,2

1. Key Laboratory for Meteorological Disaster Monitoring and Early Warning and Risk Management of Characteristic Agriculture in Arid Regions,CMA,Yinchuan 750002,China;
2. Ningxia Key Lab of Meteorological Disaster Prevention and Reduction,Yinchuan 750002,China

Received:2021-04-20 Online:2021-10-10 Published:2021-10-22

摘要/Abstract

摘要： 从向空气中输送水分的角度,分析宁夏灌区压减水稻面积的不利影响。结果表明,减少1万 hm²水稻面积,其中一半改种玉米、另一半改种小麦,就会减少水分蒸散量3.032×10⁷m³,在集中连片种植,静风条件下,近地层范围内,4—9月空气相对湿度减少11.6%。若灌区压减10%~30%的水稻,改种玉米和小麦,每年全灌区向空气中输送水量减少2.5×10⁷~7.4×10⁷m³,地下水位下降29.3~87.8 mm。可见,维持水稻面积对生态的贡献是巨大的。

关键词: 压减水稻面积, 水分蒸散发量, 地下水位, 宁夏灌区

Abstract: From the perspective of transporting water to the air, the adverse effects of reducing rice planting area in Ningxia irrigation area were analyzed. The results showed that reducing the rice area of 10 000 hm², half of which was changed to corn area and the other half to wheat area, the water evapotranspiration would reduce by 3.032×10⁷ m³. Under the condition of concentrated continuous planting and calm wind, the air relative humidity would decrease by 11.6% from April to September. If the irrigation area reduced rice area by 10%~30% and changed to corn area and wheat area, the water transported to the air in the whole irrigation area would reduce by 2.5×10⁷~7.4×10⁷ m³, the groundwater level droped by 29.3~87.8 mm every year. It could be seen that the contribution of maintaining rice area to ecology was huge.

Key words: reduce rice area, water evapotranspiration, groundwater level, Ningxia irrigation district

中图分类号:

S511
X821

郑方, 马力文, 赵慧. 宁夏灌区压减水稻面积对水环境的影响[J]. 湖北农业科学, 2021, 60(19): 25-29.

ZHENG Fang, MA Li-wen, ZHAO Hui. Effect of reducing rice planting area on water environment in Ningxia irrigation area[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(19): 25-29.

宁夏灌区压减水稻面积对水环境的影响

Effect of reducing rice planting area on water environment in Ningxia irrigation area

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