Abstract:

Effect of N application on dry matter accumulation, fresh and dry yields of ‘Lincao 2’ were studied under field experiment. The results showed that, dry matter accumulation, fresh and dry yields of ‘Lincao 2’ were increased with N application rate. ‘Lincao 2’ had the highest fresh and dry yields, and N fertilizer had the most use efficiency when N application rate was 300 kg/hm2. Dry matter accumulation, fresh and dry yields changed little at more N application rate. 70% N as basal and 30% N drop dressing at jointing stage was favorable for dry matter accumulation, fresh and dry yields increasing of ‘Lincao 2’ than all N as basal, when at the same application N rate. High yields and high efficiency cultivation of ‘Lincao 2’ could be realized under N application at 300 kg/hm2 (70% basal and 30% top dressing at jointing stage).