Influence of Nitrogen Application on Yield and Water Effect in Wheat/Maize Intercropping System

Abstract

Abstract: 【OBJECTIVE】The paper mainly illuminated the modulation effect of nitrogen fertilizer on water resource in wheat/maize intercropping system【METHOD】Influence of different nitrogen fertilizer application on water effect in wheat/maize intercropping system was studied;【RESULTS】Intercropping of wheat/maize LER was 1.31~1.53, Wheat CRmm comparing to maize（CRwm）above 1，When wheat was harvested, water use efficiency of intercropping wheat and maize was 39.0~46.7kg/mm.hm2 and 1.28~4.81 kg/mm.hm2 , respectively. Water use efficiency of intercropping wheat was higher than intercropping maize and monocropping wheat (25.43~30.75 kg/mm.hm2). After wheat was harvested, water use efficiency of intercropping maize (except N0 treatment) was increased quickly and it was 32.49-47.46 kg/mm.hm2 when maize was harvested, obviously higher than monocropping maize (27.30~38.77 kg/mm.hm2)【CONCLUSION】The results showed that wheat/maize intercropping system had obvious intercropping yield advantage; it was found that different distribution of water use efficiency of wheat and maize was the base of high water use efficiency in wheat/maize intercropping system, reasonable nitrogen application can facilitate advantage of yield and water use efficiency.

CLC Number:

Sun Jianhao,, Li Long, Zhang Fusuo, Ma Zhongming. Influence of Nitrogen Application on Yield and Water Effect in Wheat/Maize Intercropping System[J]. Chinese Agricultural Science Bulletin, 2007, 23(7): 345-345.

References

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