In order to definite the effects of rape straw manuring on soil fertility and afterreap rice growth, four planting models were designed in year 2004-2008 in Fuyang, Zhejiang Province, China, including fallow(CK), Chinese milk vetch(T1), returing burned rape straw to field after harvest(T2), returning infullblooming rape to field(T3). The results showed that under the T3 treatment, the organic content, total N content, and total P content increased, the bulk density and soil specific gravity of the soil decreased, improving paddy field fertility, physical traits, soil urease and acid phosphates activities in afterreap rice growth period. Under T3 afterreap rice growth was improved and the yield of all rice cultivars increased. This attributes to increased number of effective panicles in hybrid rice Nei 2 you 6, Liangyoupeijiu and Xiuyou 5, and to increased number of grains per panicle in conventional rice cultivar Xiushui 5. In photosynthesis traits, after returning rape as green manure, rice leaf area index, flag leaf length, width, chlorophyll content, photosynthetic rate and biomass all increased. Results showed returning rape as green manure to paddy field is a very good biofertilization method.
WANG Danying1, PENG Jian1, XU Chunmei1, ZHAO Feng1,2, ZHANG Xiufu1,*
. Effects of Rape Straw Manuring on Soil Fertility and Rice Growth[J]. Chinese Journal OF Rice Science, 2012
, 26(1)
: 85
-91
.
DOI: 10.3969/j.issn.10017216.2012.01.014
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