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

Crop rotation with plastic mulching increased soil organic carbon and water sustainability: A field trial on the Loess Plateau

文献类型： 外文期刊

作者： Zhang, Xucheng 1 ; Hou, Huizhi 1 ; Yin, Jiade 1 ; Fang, Yanjie 1 ; Yu, Xianfeng 1 ; Wang, Hongli 1 ; Ma, Yifan 1 ; Lei, Kangning 1 ;

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

2.Natl Agr Expt Stn Soil Qual, Minist Agr, Beijing, Peoples R China

3.Key Lab Efficient Utilizat Water Dry Farming Gansu, Lanzhou, Peoples R China

4.Gansu Acad Agr Sci, Inst Dryland Farming, Lanzhou 730070, Peoples R China

关键词： carbon sequestration; semiarid rain-fed Loess Plateau; soil water storage; soil-crop system; water productivity

期刊名称：SOIL USE AND MANAGEMENT （ 影响因子：3.672； 五年影响因子：3.314 ）

ISSN： 0266-0032

年卷期：

页码：

收录情况： SCI

摘要： Appropriate crop rotations are beneficial for food security and carbon sequestration. In cool and semiarid rain-fed areas, however, the effect on carbon sequestration in soil and the soil-crop system is not clear. In this study, a crop rotation field experiment was carried out on the Loess Plateau, China, involving (1) wheat continuous cropping (WCC), (2) maize continuous cropping (MCC), (3) potato continuous cropping (PCC) and (4) wheat-maize-potato rotating cropping (RC). All treatments were tilled once, and then, plastic mulched immediately to inhibit evaporation. We found that the rotating cropping system improved water storage in the 0-300 cm soil profile by 65.8 mm through the 6 years, while MCC depleted deep soil moisture. In a drought year, total dry matter (DM) for the rotating cropping was greater by 23.9% and 79.3% and harvested carbon quantity (HCQ) by 0.6 and 1.8 Mg ha(-)(1) compared with WCC and MCC systems, respectively. Total evapotranspiration significantly decreased by 14.5% compared with MCC, with no significant change compared with WCC and PCC. The soil organic carbon (SOC) concentration at 20-30 cm depth in the rotating cropping system was 36.0%, 28.0% and 30.3% greater than those of WCC, MCC and PCC, respectively. Similarly, the SOC sequestration rate at this depth was higher by 3.8, 3.2 and 3.4 Mg ha(-)(1), respectively. The pure carbon accumulation (PCA) of the rotating cropping system significantly increased compared with WCC and PCC, resulting in increased water use efficiency of pure carbon accumulation (WCP) by 11.1, 2.2 and 3.1 Mg ha(-)(1) mm(-)(1) compared with the WCC, MCC and PCC systems, respectively. Overall, the rotating cropping (RC) system maintained better soil water conditions, sustained crop development and SOC sequestration, especially optimizing the relationship between crop water utilization and SOC sequestration in soil-crop system in the cool semiarid rain-fed area.

  • 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