Abstract:

Effects of crop stubbles and fertilization on the chemical quality of soybean continuous cropping (SCC) was studied by completely randomized experiment in Longzhen Farm in 2003. The results showed that the protein contents, the total contents of protein and fat of (SCC) in alfalfa, maize, and soybean stubbles varied very significantly and significantly respectively, but fat content did not significantly, namely the protein content of (SCC) for 2 years in soybean stubble was very significantly higher 1.08% and 1.32% respectively than that of (SCC) for 1year in alfalfa and in maize stubble, the total contents of protein and fat of (SCC) for 2 years in soybean stubble was significantly higher 1.45% than that of (SCC) for 1year in maize stubble . The effects of the fertilization on the protein, fat contents, and the total contents of the both of SCC were not significantly, but the fat content has raising tendency with the fertilizer amount increase. The effects of the interaction of stubbles and fertilizers on the protein, fat contents and the total contents of the both of SCC were all not significant, the protein content, and the total content of protein and fat in the interaction combination (A3B4) were the highest, 39.86% and 58.19% respectively. The effects tendency of crop stubbles, fertilization and the interaction of the both on the protein contents, the total contents of protein and fat of (SCC) were basically same.