Sugarcane yield characteristics on arid land

Traits and correlation of yield components, and their effect on yield were investigated. The results showed that in various yielded field, great differences existed in stalk length and stalk number, only minor difference exited in stalk diameter. Stalk length and stalk diameter in high yielded field were 44.7% and 17.7% more than that in normal field respectively, while stalk number varied little. Stalk length, stalk diameter and stalk number significantly positively correlated with yield, but stalk diameter negtively correlated with stalk number, which weakened their effects on yield. The correlation between stalk length and stalk diameter was not significant, but the correlation between stalk length and stalk number was positive and significant, which leaded to their greatest contribution to yield. 