Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.7717/peerj.4410 |
Deficit irrigation and fertilization strategies to improve soil quality and alfalfa yield in arid and semi-arid areas of northern China | |
Jia, Qianmin1,2,3; Kamran, Muhammad1,2,4; Ali, Shahzad1,2,4; Sun, Lefeng1,2,4; Zhang, Peng1,2,4; Ren, Xiaolong1,2,4; Jia, Zhikuan1,2,4 | |
通讯作者 | Ren, Xiaolong ; Jia, Zhikuan |
来源期刊 | PEERJ |
ISSN | 2167-8359 |
出版年 | 2018 |
卷号 | 6 |
英文摘要 | Background In the arid and semi-arid areas of northern China, overexploitation of fertilizers and extensive irrigation with brackish groundwater have led to soil degradation and large areas of farmland have been abandoned. In order to improve the soil quality of abandoned farmland and make reasonable use of brackish groundwater, we conducted field trials in 2013 and 2014. Methods In our study, we used three fertilization modes (CF, chemical fertilizer; OM, organic manure and chemical fertilizer; NF, no fertilizer) and three deficit irrigation levels (I-0: 0 mm; I-75: 75 mm; I-150: 150 mm). Results The results showed that the activities of soil urease, alkaline phosphatase, invertase, catalase, and dehydrogenase in the OM treatment were significantly improved compared with those in the CF and NF treatments under the three deficit irrigation levels. Compared with NF, the OM treatment significantly increased soil organic carbon (SOC), water-soluble carbon (WSC), total nitrogen, microbial biomass carbon and nitrogen (MBC and MBN), and soil respiration rate, and significantly decreased soil C:N and MBC:MBN ratios and the metabolic quotient, thus improving the soil quality of abandoned farmland. Furthermore, the OM treatment increased alfalfa plant height, leaf area index, leaf chlorophyll content, and biomass yield. Under the CF and OM fertilization modes, the activities of urease and catalase in I-150 were significantly higher than those in I-0, whereas irrigating without fertilizer did not significantly increase the activity of these two enzymes. Regardless of fertilization, alkaline phosphatase activity increased with an increase in irrigation amount, whereas invertase activity decreased. Discussion The results showed that deficit irrigation with brackish groundwater under the OM treatment can improve soil quality. Over the two years of the study, maximum SOC, total nitrogen, WSC, MBC, and MBN were observed under the OM-I-150 treatment, and the alfalfa biomass yield of this treatment was also significantly higher than that of the OM-I-0 treatment. Therefore, the OM-I-150 treatment could be used as a suitable measure not only to improve the quality of abandoned farmland soil but also to increase the alfalfa biomass yield in arid and semi-arid areas of northern China. |
英文关键词 | Soil organic carbon Microbial biomass Deficit irrigation Soil respiration rate Soil enzyme |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000426518200006 |
WOS关键词 | SALINE WATER IRRIGATION ; LONG-TERM APPLICATION ; MICROBIAL BIOMASS ; ORGANIC MANURE ; BIOCHEMICAL-PROPERTIES ; ENZYMATIC-ACTIVITY ; EXTRACTION METHOD ; CROPPING SYSTEMS ; WHEAT ROTATION ; USE EFFICIENCY |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
来源机构 | 西北农林科技大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/212018 |
作者单位 | 1.Northwest A&F Univ, Inst Water Saving Agr Arid Areas China, Yangling, Shaanxi, Peoples R China; 2.Northwest A&F Univ, Key Lab Crop Physiecol & Tillage Sci North Wester, Minist Agr, Yangling, Shaanxi, Peoples R China; 3.Northwest A&F Univ, Coll Forestry, Yangling, Shaanxi, Peoples R China; 4.Northwest A&F Univ, Coll Agron, Yangling, Shaanxi, Peoples R China |
推荐引用方式 GB/T 7714 | Jia, Qianmin,Kamran, Muhammad,Ali, Shahzad,et al. Deficit irrigation and fertilization strategies to improve soil quality and alfalfa yield in arid and semi-arid areas of northern China[J]. 西北农林科技大学,2018,6. |
APA | Jia, Qianmin.,Kamran, Muhammad.,Ali, Shahzad.,Sun, Lefeng.,Zhang, Peng.,...&Jia, Zhikuan.(2018).Deficit irrigation and fertilization strategies to improve soil quality and alfalfa yield in arid and semi-arid areas of northern China.PEERJ,6. |
MLA | Jia, Qianmin,et al."Deficit irrigation and fertilization strategies to improve soil quality and alfalfa yield in arid and semi-arid areas of northern China".PEERJ 6(2018). |
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