Journal of Ecology and Rural Environment ›› 2009, Vol. 25 ›› Issue (2): 49-53.doi: CNKI:SUN:NCST.0.2009-02-012
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ZHANG Fu-Guo, XU Yang-Chun, SHEN Qi-Rong, WANG Yong-Hong
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Abstract: A field experiment designed to have four treatments,grass mulch(GC),film mulch(FM),bare(LL),and submerged(SZ),was conducted to study effects of rice cultivation pattern on yield and biomass of its after-crop,barley,soil microbial biomass and nitrogen fertilizer use efficiency.Results show that(1)Treatment GC was the highest in grain yield of barley,about 6.0%,16.4% and 37.0% higher than Treatments FM,LL and SZ,respectively;(2)Treatment GC was also the highest in biomass of the barley at its harvest stage,and about 3 424,6 059 and 6 961 kg·hm-2 higher than Treatments FM,LL and SZ,respectively;(3)soil microbial biomass carbon and nitrogen increased first and then decreased with the growth of barley in all the four treatments,which appeared to be in a decreasing order of GC>FM>LL>SZ;and(4)Treatment GC was also the highest in nitrogen fertilizer use efficiency,and about 0.9,2.2 and 8.0 kg·kg-1 higher than Treatments FM,LL and SZ,respectively,and a similar trend was observed of nitrogen production rate showing that Treatment GC was 2.8,7.0 and 13.3 kg·kg-1 higher than Treatments FM,LL and SZ,respectively.The findings suggest that Treatment GC is an optimal cultivation pattern in rotation with barley.
Key words: rotation of rice and barley, barley yield, soil microbial biomass C, soil microbial biomass N, nitrogen fertilizer use efficiency
CLC Number:
S512.3
S154.3
ZHANG Fu-Guo, XU Yang-Chun, SHEN Qi-Rong, WANG Yong-Hong. Effects of Rice Cultivation Pattern on Yield of After-Crop and Soil Microbial Biomass[J]. Journal of Ecology and Rural Environment, 2009, 25(2): 49-53.
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