In order to investigate the performance of Guitang46 with different seeding rate and nitrogen application level in Xingbin sugarcane area,to provide reference for high-yield and high-sugar cultivation of Guitang46,five seeding rates(75000,90000,105000,120000 and 135000 buds/hm2)and four nitrogen application levels(75,150,300 and 600 kg/hm2)were set up for the new planting experiment of Guitang46,to analyze the agronomic traits and economic benefits of each treatment.The results showed that in the Xingbin sugarcane area of Guangxi,according to the local conventional fertilization level,the highest and lowest of sugarcane stem yield are under the treatment of 120000 buds/hm2 and 75000 buds/hm2,which are 109485 kg/hm2 and 76020 kg/hm2,respectively.According to local conventional seeding rate,the highest and lowest of sugarcane stem yield are under nitrogen application level of 300 kg/hm2 and 75 kg/hm2,which are 117255 kg/hm2 and 93675 kg/hm2,respectively.The seeding rate and nitrogen application level are highly significant and positively correlated with sugarcane yield.The economic benefits are better under the treatment of 105000 buds/hm2 and 150 kg/hm2 nitrogen application level,the ratio of input-output is 1∶1.50 and 1∶4.84,respectively.It is suggested that Guitang46 should be planted with 105000～120000 buds/hm2,and fertilized with 150～300 kg/hm2 of nitrogen(urea 326.1～652.2 kg/hm2)in Xingbin sugarcane area of Guangxi.
维普
万方数据