کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8879254 | 1624642 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Limited irrigation and planting densities for enhanced water productivity and economic returns under the ridge-furrow system in semi-arid regions of China
ترجمه فارسی عنوان
محدودیت های آبیاری و تراکم کاشت برای افزایش بهره وری آب و بازده اقتصادی در زیر سیستم ریجفورد در مناطق نیمه خشک
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کلمات کلیدی
Ridge-furrowiWUEWUEDAPIWPSWSLimited irrigation - آبیاری محدودIrrigation water productivity - بهره وری آب آبیاریWater use efficiency - بهره وری استفاده از آبEvapotranspiration - تبخیر و تعرقSoil water storage - ذخیره آب خاکdays after planting - روز بعد از کاشتyear - سالNet profit - سود خالصLeaf area index - شاخص سطح برگLAI - شبیهIrrigation water use efficiency - کارآیی مصرف آب آبیاری
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
چکیده انگلیسی
In the semi-arid regions of China, ridge-furrow (RF) planting system is being gradually implemented, in order to improve the soil moisture status and water utilisation efficiency. This study aimed to improve the efficiency of the RF system by investigating the effects of three planting densities (L: 52,500 plantsâhaâ1; M: 75,000 plantsâhaâ1; H: 97,500 plants haâ1) and four kinds of limited irrigation modes (NI: no irrigation; IV: irrigation at the vegetative stage with 11 leaves; IS: irrigation at the silking stage; and IVS: irrigation at the vegetative and silking stages). Maize (Zea mays L.) plants mainly consumed the top surface of (0-60â¯cm) soil water, whereas the deep layer (120-200â¯cm) of soil moisture was less affected under the RF system, and the average soil water storage of 0-60, 60-120, and 120-200â¯cm decreased by 58.7, 39.1, and 7.1â¯mm, respectively, during the entire growth period. Limited irrigation at the vegetative and silking stages had a positive effect on biomass, leaf area index, and evapotranspiration, but did not significantly increase grain yield, water use efficiency (WUEG), irrigation WUE (IWUEG), and irrigation water productivity (IWPG). The average data obtained over two years showed that medium planting density with limited irrigation at the silking stage (M-IS) treatment significantly increased WUEG, IWUEG, and IWPG by 5.7, 98.5, and 92.6%, respectively, compared with those in the M-IVS treatment. Economic benefit analysis also showed that M-IS treatment resulted in greater net profit (2313.3 USD haâ1). Thus, the M-IS treatment could be a suitable planting model for improving maize grain yield, economic benefit, and water use in the semi-arid regions of China.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Field Crops Research - Volume 221, 15 May 2018, Pages 207-218
Journal: Field Crops Research - Volume 221, 15 May 2018, Pages 207-218
نویسندگان
Qianmin Jia, Lefeng Sun, Jinjin Wang, Juan Li, Shahzad Ali, Tiening Liu, Peng Zhang, Yanhao Lian, Ruixia Ding, Xiaolong Ren, Zhikuan Jia,