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