Partial rootzone irrigation increases water use efficiency, maintains yield and enhances economic profit of cotton in arid area
文献类型：期刊论文
| 作者 | Tang ; Li-Song ; Li ; Yan ; Zhang ; Jianhua |
| 刊名 | AGRICULTURAL WATER MANAGEMENT
 |
| 出版日期 | 2010 |
| 卷号 | 97期号:10页码:1527-1533 |
| 关键词 | ZONE DRIP IRRIGATION DEFICIT IRRIGATION XYLEM SAP STOMATAL CONDUCTANCE SUNFLOWER PLANTS FRUIT-QUALITY SHOOT GROWTH SOIL ROOTS MAIZE |
| ISSN号 | 0378-3774 |
| 通讯作者 | Li, Y, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Fukang Stn Desert Ecol, 40-3 S Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China |
| 中文摘要 | Partial rootzone irrigation (PRI) can substantially reduce irrigation amount and has been demonstrated as a promising irrigation method for crops in arid or semiarid areas. Many earlier researches have shown that PRI reduces leaf transpiration by narrowing stomatal opening. In this study we verified the hypothesis that PRI can also save irrigation water by substantially reducing soil evaporation. Field experiment was conducted in an arid area where cotton production almost completely relies on irrigation. Water was applied to furrows in the cotton field either alternatively (AFI, alternative furrow irrigation), or evenly to all the furrows (CFI, conventional furrow irrigation), or to one fixed furrow in every two (FFI, fixed furrow irrigation). Our results show that surface evaporation constitutes a large fraction of the irrigation water loss from cropped field (more than 20%), and with the two PRI treatments nearly 40% of the evaporative water loss is saved. Transpiration accounted for 48%, 58% and 57% of the total amount of irrigation respectively for the CFI, AFI and FFI treatments. This result suggests that PRI increases the proportion of applied water that is transpired, and therefore leads to a higher water use efficiency than regular irrigation. Overall, when irrigation was reduced by 30%, the average final yield loss of AFI was only 4.44%, a non-significant reduction statistically. The FFI had a significant reduction in yield of 12.01% in comparison to CFI. Moreover, PRI brings in earlier flowering and a higher economical return due to early harvested cotton. This indicates that the final economical output could compensate for the loss of cotton yield due to water-saving. With very little extra cost to implementation. PRI proves a very promising method in cotton production in arid zone. (C) 2010 Elsevier B.V. All rights reserved. |
| 学科主题 | 植物生理学 |
| 收录类别 | SCI |
| 公开日期 | 2011-08-19 |
| 源URL | [http://ir.xjlas.org/handle/365004/9924]  |
| 专题 | 新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据) |
| 推荐引用方式 GB/T 7714 | Tang,Li-Song,Li,et al. Partial rootzone irrigation increases water use efficiency, maintains yield and enhances economic profit of cotton in arid area[J]. AGRICULTURAL WATER MANAGEMENT,2010,97(10):1527-1533. |
| APA | Tang,Li-Song,Li,Yan,Zhang,&Jianhua.(2010).Partial rootzone irrigation increases water use efficiency, maintains yield and enhances economic profit of cotton in arid area.AGRICULTURAL WATER MANAGEMENT,97(10),1527-1533. |
| MLA | Tang,et al."Partial rootzone irrigation increases water use efficiency, maintains yield and enhances economic profit of cotton in arid area".AGRICULTURAL WATER MANAGEMENT 97.10(2010):1527-1533. |
入库方式： OAI收割
来源：新疆生态与地理研究所
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