Effect of Separating Root Method on Wheat and Corn Intercropping System

With field and pot experiments, the effects of separating root on wheat and corn intercropping system were investigated at 3 different fertilizer supplying levels. The results showed that root was important in increasing yield and nutrition absorption of wheat/corn . The yield of margin wheat and corn were decreased 11.15% ~ 18.54% and 38.1%~43.4% by separating roots, respectively. The absorption of N?P?K in wheat/corn also reduced clearly. With the extension of growth period, the tendency of reduction of nutrient content in wheat/corn was increased when root was separated. The numbers, length and volume of wheat root decreased 21.74% ?32.17% and 19.23%, individually, that of corn root was also decreased 23.04%?20.99% and 4.13%.