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Wang Hongyan(Northeast Agricultural University Harbin 150030, PRC)Pengchi(Station of environmental protection of ugriculturs, Harbin 150036, PRC)Hou Zhongtian(Northeast Agricultural University Harbin 150030, PRC)  
A dynamic model of manure humification in relation to rainfall, acuumulated temperature of soil and application amount of manure was established by combining the method of sand-filtrating tube and the design of guardratic rotation regression. The results showed that me manure hamffication coefficient was possitively correlated with the rainfall, but negatively correlated with the accumulated tempreture of soil. The variables of manure humification coefficients can be culcuated from this model in different region, and under differed rainfall conditions
【CateGory Index】: S141
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