Earth & Environmental Sciences
aboveground biomass
9%
atmospheric deposition
9%
calibration
5%
carbon
4%
cereal
9%
climate
9%
crop
6%
crop production
100%
crop rotation
21%
cropping practice
8%
drainage
6%
economics
4%
ecosystem
4%
effect
21%
erratic
9%
evaluation
8%
evapotranspiration
7%
fertilizer
43%
harvest
7%
incorporation
76%
leaching
70%
maize
15%
management practice
7%
mineralization
6%
nitrate
67%
nitrogen
55%
parameter
5%
plain
25%
plateau
6%
rate
11%
rhizosphere
8%
sensitivity analysis
7%
silty loam
24%
soil
3%
soil water
6%
sound
6%
straw
94%
sustainability
6%
topsoil
16%
wheat
23%
winter
5%
Agriculture & Biology
aboveground biomass
10%
atmospheric deposition
15%
calibration
10%
carbon
6%
China
59%
climate
8%
corn
12%
crop production
86%
crop yield
9%
cropping systems
9%
crops
5%
drainage
10%
dynamic models
12%
economics
6%
ecosystems
7%
evapotranspiration
10%
fertilizer rates
36%
fertilizers
7%
grain yield
8%
leaching
90%
mineralization
10%
nitrates
77%
nitrogen
54%
nitrogen content
9%
nitrogen fertilizers
46%
plateaus
9%
rhizosphere
9%
semiarid zones
12%
soil quality
9%
soil water
8%
statistical models
11%
straw
83%
topsoil
22%
wheat
13%
winter wheat
9%