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.
高温伏旱区旱地农作系统水分供需平衡特征与生态适应性研究
- 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
- 分类号:
- S152.75;P426.616
- 摘要:
- 天然降水是高温伏旱区旱地农作系统的主要水资源。根据调查资料和田间实验结果，以高温伏旱代表区域奉节、万州、沙坪坝为研究区，计算出重庆几种主要种植模式（小麦-玉米-甘薯、胡豆-玉米-甘薯、小麦-玉米-大豆、马铃薯-玉米-甘薯、胡豆-玉米-大豆、油菜-玉米-甘薯）的需水量，系统地分析在坡度0°、5°、10°、15°、20°、25°耕地上，不同降雨年型中，主要种植模式水分供需平衡与错位特征，并利用水分生态适应性数学模型进行评价。研究表明：奉节3种降雨年型主要是由各年5-9月的实际降雨量决定的，万州3种降雨年型各月降雨量的差异主要体现在7-9月，沙坪坝3种降雨年型的年降雨量差异的最明显月份为7月。3个研究区和北碚实验区的平均年参考作物蒸散量的大小顺序是奉节>北碚>万州>沙坪坝。就相同的复作模式而言，不同研究区作物需水量的大小顺序为：奉节>万州>沙坪坝；同一研究区不同复作模式需水量大小顺序为：油菜-玉米-甘薯>胡豆-玉米-大豆>马铃薯-玉米-甘薯>小麦-玉米-大豆>胡豆-玉米-甘薯>小麦-玉米-甘薯。在平整的耕地上，奉节只有丰水年适宜在坡度较小的耕地上种植小麦-玉米-甘薯、胡豆-玉米-甘薯和小麦-玉米-大豆。万州丰水年可以在平整的土地上种植各种复作模式，平水年适宜种植小麦-玉米-甘薯。沙坪坝平水年适宜种植小麦-玉米-甘薯、胡豆-玉米-甘薯和小麦-玉米-大豆。通过积极调整种植结构，调节播种时间，采用保护性耕作，抗旱品种培育与生物抗旱技术，大力修建蓄水工程，发展设施农业等措施改善水资源利用状况，提高旱作农业的可持续发展能力。
- 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.
参考文献/References:
[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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备注/Memo
收稿日期:2010-5-12
基金项目:国家“十一五”科技支撑项目（2006BAD29B08）；西南季节性干旱区集雨补灌技术集成与示范；国家自然科学基金项目（30871474）；重庆市科技攻关项目（CSTC,2008AB1001）；西南大学农业部生物技术与作物品质改良重点开放实验室基金项目
作者简介:张云兰（1984- ），女，四川成都人，硕士生，主要从事农业生态研究。E-mail：zyl840723@sina.com
通讯作者:王龙昌（1964- ），男，陕西周至人，博士，教授，主要从事农业生态研究。E-mail：wanglc2003@163.com