Abstract:

To explore the super high-yield wheat quantitative and standardized cultivation technique, we optimized the program with the design of five quadratic regression rotation, and studied the relationship and the interactions between the ultra-high-yield wheat’s yield and the five agronomic measures, such as sowing time, the sowing rate, the nitrogen rate, the phosphorus rate and the organic fertilizer rate. The results showed that: there was a clear functional relationship between the five agronomic measures and the yield, and finally the mathematical model of the production goals was established. The effects of five agronomic measures on the yield were different, the interactions between the sowing time and the sowing rate, the sowing time and the organic fertilizer, the sowing rate and the nitrogen rate, the nitrogen rate and the P2O5 rate, and the organic fertilizer and the P2O5 rate reached the significant level, and the relationship among five agronomic measures was coordinated effectively. The yield of ‘Yumai 49-198’ reached (9393±234.8) kg/hm2 and its optimized agronomic measures were as follow: the sowing time was from October 11 to 13, the sowing rate was 91.9-99.4 kg/hm2, the nitrogen rate was 213.50-231.4 kg/hm2, the P2O5 rate was 144.7-157.2 kg/hm2, and the organic fertilizer rate was 41117.0-41367.0 kg/hm2. After applying on the similar ecological demonstration area, we found the effect was very significant.