Abstract: In order to provide scientific basis for rational fertilization in Sophora japonica industrialization, the effects of common farmyard manure on the characters and yield of S. japonica in karst mountainous area was studied. The results showed that compared with the controled group, single and mixed application of farmyard manure could reduced the number of large branches and spikelets, increased the number of middle branches, twigs, large inflorescence and middle inflorescence. In single fertilization treatment, the order of rate of flower buds transformed into leaf buds was cow manure>chicken manure>pig manure. In the mixed application treatment, the rate of pig manure and cow dung, chicken manure and cow dung was the highest. The rate of single application and mixed application was obviously increased. The flowering uniformity of chicken manure and cow manure was low, and the other six treatments were relatively high. In single fertilization treatment, the order of average fresh weight and dry weight of S. japonica inflorescence was pig manure>chicken manure>cow manure. In mixed application, the average fresh weight and dry weight of mixed application of pig manure and chicken manure was the highest, and the mixed application of pig manure and cow dung was the lowest. In single treatment, the order of dry weight/fresh weight ratio was cow manure>chicken manure>pig manure. The dry/fresh weight ratio of pig manure and cow manure, pig manure and chicken manure were the highest in mixed application. Mixed application of pig manure and chicken manure could be popularized as an effective technical measure for increasing the yield of S. japonica in karst mountainous area.

Key words: Sophora japonica, pig manure, chicken manure, cow manure