scholarly journals An integrated soil-crop system model for water and nitrogen management in North China

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Hao Liang ◽  
Kelin Hu ◽  
William D. Batchelor ◽  
Zhiming Qi ◽  
Baoguo Li
Keyword(s):  
North China ◽  
Nitrogen Management ◽  
System Model ◽  
Crop System

Effects of a Grass-Selective Herbicide in a Vetch-Rye Cover Crop System on Nitrogen Management

2007 ◽  
Vol 99 (1) ◽  
pp. 36-42 ◽  
Author(s):  
A. J. Clark ◽  
J. J. Meisinger ◽  
A. M. Decker ◽  
F. R. Mulford
Keyword(s):  
Cover Crop ◽  
Nitrogen Management ◽  
Crop System ◽  
Selective Herbicide

scholarly journals Resilience analysis for agricultural systems of north China plain based on a dynamic system model

2011 ◽  
Vol 68 (1) ◽  
pp. 8-17 ◽  
Author(s):  
Hongjun Li ◽  
Zhijun Liu ◽  
Li Zheng ◽  
Yuping Lei
Keyword(s):  
Food Security ◽  
North China Plain ◽  
North China ◽  
System Model ◽  
Agricultural Systems ◽  
Time Step ◽  
The North ◽  
Labor Transfer ◽  
Main Components ◽  
The Cost

This paper presents a case study of resilience theory to understand agricultural systems in the Luancheng County of the North China Plain. A dynanic system model coupled with social, economic and ecological subsystems of agriculture for the Luancheng County was constructed with a time step of one month. The model includes five main components, water resources, profitability, irrigation, crop yield and area. The simulated groundwater table, wheat area and yield, maize area and yield, and rural labor transfer reflected the general trend of the observed data, with calculated determination coefficients higher than 0.88. Resilience of agricultural systems, as indicated by agricultural profitability and food security, were explored for the Luancheng County. Initially, investments in agriculture increased its resilience rapidly. However, with the degradation of resources and the increases in agricultural investment, the cost of agricultural production became too high to gain profit. The rise in population increases the risk of food security. As a result, the resilience of agricultural systems decreased gradually. The Luancheng County is now in the conservation phase of the adaptive cycle. Partial adjustments should be introduced to enhance its resilience and promote the continuing development of the agricultural systems.

scholarly journals Coupling Dairy Manure Storage with Injection to Improve Nitrogen Management: Whole‐Farm Simulation Using the Integrated Farm System Model

ael ◽  
2017 ◽  
Vol 2 (1) ◽  
pp. 160048 ◽  
Author(s):  
E. W. Duncan ◽  
P. J. A. Kleinman ◽  
D. B. Beegle ◽  
C. A. Rotz
Keyword(s):  
Dairy Manure ◽  
Nitrogen Management ◽  
System Model ◽  
Manure Storage ◽  
Farm System

Effects of nitrogen management on methane and nitrous oxide emissions from summer maize soil in North China Plain

2011 ◽  
Vol 41 (1) ◽  
pp. 117-128 ◽  
Author(s):  
Fang SU ◽  
XiaoKang HU ◽  
FuSuo ZHANG ◽  
BinXiang HUANG ◽  
RongFeng JIANG ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
North China Plain ◽  
North China ◽  
Nitrogen Management ◽  
Nitrous Oxide Emissions ◽  
Summer Maize
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