Agriculture & Biology
plastic film
90%
mulching
85%
arid lands
80%
water use efficiency
71%
agriculture
55%
soil temperature
51%
China
47%
corn
46%
soil
37%
soil water storage
34%
corn straw
33%
loess
31%
water
30%
soil management
28%
nutrient availability
25%
arid zones
25%
crop production
23%
plateaus
22%
crop yield
22%
income
21%
farming systems
20%
grain yield
19%
farmers
17%
temperature
9%
Earth & Environmental Sciences
mulching
100%
mulch
96%
water use efficiency
88%
dryland farming
84%
maize
66%
plastic
42%
soil temperature
37%
soil
31%
soil management
21%
nutrient availability
21%
crop production
20%
crop yield
19%
semiarid region
19%
water storage
19%
water availability
18%
straw
18%
loess
17%
water use
17%
management practice
16%
field study
16%
income
16%
soil water
15%
plateau
13%
productivity
12%
world
10%
temperature
6%
water
5%
effect
4%