您好，欢迎访问甘肃省农业科学院 机构知识库！
甘肃省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Maize-fababean rotation under double ridge and furrows with plastic mulching alleviates soil water depletion

文献类型： 外文期刊

作者： Wang, Hongli 1 ; Zhang, Xucheng 1 ; Yu, Xianfen 1 ; Hou, Huizhi 1 ; Fang, Yanjie 1 ; Ma, Yifan 1 ;

作者机构： 1.Gansu Acad Agr Sci, Dryland Agr Inst, Lanzhou 730070, Gansu, Peoples R China

关键词： Semi-arid area; Maize-fababean rotation; Soil water balance; Economic effects; Ridge and furrow with plastic mulching

期刊名称：AGRICULTURAL WATER MANAGEMENT （ 影响因子：4.516； 五年影响因子：5.12 ）

ISSN： 0378-3774

年卷期： 2018 年 207 卷

页码：

收录情况： SCI

摘要： Double ridge and furrows with plastic mulching (PM), an effective drought-resistant farming technology, has been widely used in the semi-arid areas of China, and increased crop yields by more than 30%. However, where this technology has been applied in successive years, the annual balance of soil water has been affected and the risk of soil desiccation exacerbated. A 6-year field experiment had been conducted on the semiarid Loess Plateau to find a new mode of ecological security and economic efficiency under PM conditions. The two treatments were (i) PM with continuous maize cropping (PM-C) and (ii) PM with maize-fababean rotation (PM-R). The vertical variation of soil water along profile and the interannual variation of soil water, cumulative water consumption, biomass and yield, benefit and water economic yield were investigated. The results showed that the depth of soil water consumption of PM-C was extended downward by 60 cm from 2009 to 2014, but it did not vary in PM-R; the maximum depth of soil water consumption were 280 cm and 220 cm in PM-C and PM-R, respectively. Compared with the pre-seeding stage in 2009, soil water storage in the 0-300 cm depth in 2014-HA for PM-C decreased by 163.59 mm, comprising 5.21 mm in the 0-140 cm soil layer and 158.37 mm in the 140-300 cm layer. However, in the PM-R treatment, the soil water storage in the 0-300 cm depth in 2014-HA increased by 28.36 mm, resulting from an increase of 47.86 mm in the 0-140 cm soil layer and a decrease of 19.50 mm in the 140-300 cm layer. PM-R significantly improved crop water consumption in the post-flowering period, and the ratio of water consumption in post-flowering to total significantly increased by 19.54-51.09% (P < 0.05). The biomass and grain yield for PM-R were significantly lower than for PM-C, by 21.36 and 59.14%, respectively. However, there were no significant differences in benefit, mainly because the price of fababean was higher. The soil water depletion in 6 years of PM-R decreased significantly and therefore water economic yield was significantly higher than for PM-C. This suggested that PM-R alleviated the over-consumption of deep soil water and the water depletion depth, which caused by continuous maize cropping in PM-C, and so achieved significantly higher water economic yield by reducing soil water depletion and provided stable economic benefit. Consequently, PM-R represents a sustainable ecological, economic, secure and replicable planting mode.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：甘肃省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台