Abstract:

Based on the research of silage maize Longfudan208, Dongqing1, Jisi8hao and Zhongyuandan32, this article studies the influence of different harvest date on the yield of Fresh matter and dry matter. Results of the research show that:Fresh matter reach the most 20-30 days after pollination and dry matter increases as harvest date delayed.From analysis of dry matter accumulation, the best harvest date northern cold areas is 40-50days after pollination.