نتایج جستجو برای: cropping system

تعداد نتایج: 2237513  

Journal: :International Journal of Environment, Agriculture and Biotechnology 2019

2014
Mingna Chen Xiao Li Qingli Yang Xiaoyuan Chi Lijuan Pan Na Chen Zhen Yang Tong Wang Mian Wang Shanlin Yu

Plant health and soil fertility are affected by plant-microbial interactions in soils. Peanut is an important oil crop worldwide and shows considerable adaptability, but growth and yield are negatively affected by continuous cropping. In this study, 16S rRNA gene clone library analyses were used to study the succession of soil bacterial communities under continuous peanut cultivation. Six libra...

2013
Luo Liu Xinliang Xu Dafang Zhuang Xi Chen Shuang Li

The multiple cropping practice is essential to agriculture because it has been shown to significantly increase the grain yield and promote agricultural economic development. In this study, potential multiple cropping systems in China are calculated based on meteorological observation data by using the Agricultural Ecology Zone (AEZ) model. Following this, the changes in the potential cropping s...

2012
LI Peng FENG Zhiming LIU Yujie XIAO Xiangming

Rice cropping systems not only characterize comprehensive utilization intensity of agricultural resources but also serve as the basis to enhance the provision services of agro-ecosystems. Yet, it is always affected by external factors, like agricultural policies. Since 2004, seven consecutive No.1 Central Documents issued by the Central Government have focused on agricultural development in Chi...

2012
Mingna Chen Xiao Li Qingli Yang Xiaoyuan Chi Lijuan Pan Na Chen Zhen Yang Tong Wang Mian Wang Shanlin Yu

Peanut is an important oil crop worldwide and shows considerable adaptability but growth and yield are negatively affected by continuous cropping. Soil micro-organisms are efficient bio-indicators of soil quality and plant health and are critical to the sustainability of soil-based ecosystem function and to successful plant growth. In this study, 18S rRNA gene clone library analyses were employ...

Journal: :Journal of environmental quality 2008
Ardell D Halvorson Stephen J Del Grosso Curtis A Reule

We evaluated the effects of irrigated crop management practices on nitrous oxide (N(2)O) emissions from soil. Emissions were monitored from several irrigated cropping systems receiving N fertilizer rates ranging from 0 to 246 kg N ha(-1) during the 2005 and 2006 growing seasons. Cropping systems included conventional-till (CT) continuous corn (Zea mays L.), no-till (NT) continuous corn, NT corn...

2009
J. W. Jones S. Adiku A. J. Gijsman O. Gargiulo J. B. Naab

Cropping systems models have evolved over the last four decades in response to the demand for modeling to address more complex questions, including issues on sustainable production, climate change, and environmental impacts. Early models, which were used primarily for yield gap analysis, have increased in complexity to include not only nutrient and water deficiencies, but also pest and disease ...

2017
Richard Kyalo Elfatih M. Abdel-Rahman Sevgan Subramanian Johnson O. Nyasani Michael Thiel Hosein Jozani Christian Borgemeister Tobias Landmann

Cropping systems information on explicit scales is an important but rarely available variable in many crops modeling routines and of utmost importance for understanding pests and disease propagation mechanisms in agro-ecological landscapes. In this study, high spatial and temporal resolution RapidEye bio-temporal data were utilized within a novel 2-step hierarchical random forest (RF) classific...

Journal: :FEMS microbiology ecology 2012
Xingang Zhou Fengzhi Wu

The continuous cropping of cucumber in the same potting soils may result in a reduction of yield and quality of the crop, a phenomenon described as soil sickness. The changes of soil microbial communities as affected by continuous cropping and the link between these changes and soil sickness of cucumber are still not clear. In the present study, cucumber was cropped in pots under greenhouse con...

2017
H. J. Lin

Steganography is the art and science of hiding or embedding data in a transmission medium. The goal of steganography is to hide an information message inside a harmless cover medium in such a way that it is not possible even to detect that there is a secret message. In this paper, the object oriented steganography is based on biometrics. Data is embedded into some regions of the skin and not to...

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