[1]ZHANG Yun-lan,WANG Long-chang,ZOU Cong-ming,et al.Study on Water Supply-demand Equilibrium and Ecological Adaptability of Dryland Farming Systems in Hot and Summer Drought Areas[J].Research of Soil and Water Conservation,2010,17(06):95-100,105.
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Study on Water Supply-demand Equilibrium and Ecological Adaptability of Dryland Farming Systems in Hot and Summer Drought Areas
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
17
Number of periods:
2010 06
Page number:
95-100,105
Column:
Public date:
2010-12-20
- Title:
- Study on Water Supply-demand Equilibrium and Ecological Adaptability of Dryland Farming Systems in Hot and Summer Drought Areas
- Keywords:
- hot and summer drought area; crop water demand; water supply-demand equilibrium; water ecological adaptability; cropping system
- CLC:
- S152.75;P426.616
- DOI:
- -
- Abstract:
- Precipitation is the major water resource in dryland farming system of hot and summer drought areas. In this study, taking representatives of hot and summer drought areas, Fengjie, Wanzhou, Shapingba as study areas, water demand was calculated for several main planting patterns such as wheat-corn-sweet potato, horsebean-corn-sweet potato, wheat-corn-soybean, potato-corn-sweet potato, horsebean-corn-soybean, rape-corn-sweet potato, water supply-demand equilibrium and dislocation characteristics of the main crops and planting patterns in farmland with the slope 0°, 5°, 10°, 15°, 20°, 25°, on different years of rainfall types was analyzed systematically, and evaluated by mathematical model of water ecological adaptability. Three rainfall type years of Fengjie were mainly determined by actual rainfall in the months from May to September. The month rainfall differences of three rainfall type years in Wanzhou was mainly centralized in the months from July to September. The most obvious rainfall difference of three rainfall type years in Shapingba appeared in July. The order of average annual reference evapotranspiration of three study regions and Beibei was Fengjie>Beibei>Wanzhou>Shapingba. As the same crop or the same planting pattern, the order of water demand in different regions was Fengjie>Beibei>Wanzhou>Shapingba. As the same region, the order of different complex planting pattern water demand was, rape-corn-sweet potato>horsebean-corn-soybean>potato-corn-sweet potato>wheat-corn-soybean>horsebean-corn-sweet potato>wheat-corn-sweet potato. In the flat farmland Fengjie, wheat-corn-sweet potato, horsebean-corn-sweet potato and wheat-corn-soybean could be planted on, gentle slope land in wet year. But for Wanzhou, all of the complex planting patterns were suitable in wet year, and wheat-corn-sweet potato could be chosen in average year. As Shapingba, wheat-corn-sweet potato, horsebean-corn-sweet potato and wheat-corn-soybean were suitable in average year. Dyland farming will be sustainable through agricultural water-saving and drought-resistance countermeasures such as planting structure and planting time adjustment, using conservation tillage, cultivating drought-resistant varieties, taking biological drought-resistance technology, building water-storage project.
- References:
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[1] 高阳华,唐云辉,冉荣生.重庆市伏旱发生分布规律研究[J].贵州气象,2002,26(3):6-11.
[2] 江玉华,程炳岩,邓承之,等.重庆市严重伏旱气候特征分析[J].高原山地气象研究,2005,10(2):25-29.
[3] 康绍忠,刘晓明,熊运章.土壤-植物-大气连续体水分传输理论及其应用[M].北京:水利水电出版社,1994.
[4] 谢贤群,吴凯.麦田蒸腾需水量的计算模式[J].地理学报,1997,52(6):528-535.
[5] 李玉义,周宪龙,张海林,等.京郊山地旱作区作物水分生态适应性系统评价[J].华北农学报,2005,20(2):59-62.
[6] 陈玉民,郭国双.中国主要农作物需水量等值线图研究[M].北京:中国农业科技出版社,1993.
[7] 王龙昌,谢小玉,王立祥,等.黄土丘陵区旱地作物水分生态适应性系统评价[J].应用生态学报,2004,15(5):758-762.
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1900-01-01