Abstract
The productivity,soil moisture,and soil and water erosion characteristics of six grain-grass intercropping modes of foxtail millet(Setaria italica(L.) Beauv.) or broomcorn millet(Panicum miliaceum L.)+alfalfa(Medicago sativa L.) and grain monoculture mode as control were studied by a field trial on 5° slopes in south region of Ningxia Hui Autonomous Region from May 2007 to October 2008.The results show that the soil moisture content was significantly increased,the water use efficiency of food crops improved 0.41-2.15 kg/m3,grain yield increased 2.13-23.88%,surface runoff reduced 18.58-74.90%,and sediment runoff decreased 30.14-100% under six grain+alfalfa intercropping modes(02∶04,04∶08,06∶06A,04∶02,08∶04,and 06∶06B) in comparison with the monoculture of grain crops.Among the different grain-grass intercropping modes,the integrated effect of productivity increment of 02:04 mode with alfalfa as the starting crop at top of the slope was the best.
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Claims 6
Claim · model-written summary
Grain–alfalfa intercropping significantly increased soil moisture content against grain monoculture.
Not reportedComparator
Verbatim
e0“soil moisture content was significantly increased”
t0“grain-grass intercropping”
Claim · model-written summary
Intercropping improved crop water use efficiency by 0.41-2.15 kg/m3 over grain monoculture.
Verbatim
t0“grain-grass intercropping”
e0“the water use efficiency of food crops improved 0.41-2.15 kg/m3”
e1“in comparison with the monoculture of grain crops”
Claim · model-written summary
Intercropping increased grain yield by 2.13-23.88% over grain monoculture.
Verbatim
t0“grain-grass intercropping”
e0“grain yield increased 2.13-23.88%”
e1“in comparison with the monoculture of grain crops”
Claim · model-written summary
Intercropping reduced surface runoff by 18.58-74.90% over grain monoculture.
Verbatim
t0“grain-grass intercropping”
e0“surface runoff reduced 18.58-74.90%”
e1“in comparison with the monoculture of grain crops”
Claim · model-written summary
Intercropping decreased sediment runoff by 30.14-100% over grain monoculture.
Verbatim
t0“grain-grass intercropping”
e0“sediment runoff decreased 30.14-100%”
e1“in comparison with the monoculture of grain crops”
Claim · model-written summary
The 02:04 mode with alfalfa starting at the top of the slope had the best integrated productivity effect.
- Taxon
- alfalfa
Medicago sativae0 - Treatment
- 02:04 mode with alfalfa as the starting crop at top of the slopee0
- Outcome
- integrated effect of productivity incremente0
- Direction
- beste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grain-grass intercropping”
e0“the integrated effect of productivity increment of 02:04 mode with alfalfa as the starting crop at top of the slope was the best”