Effects of Application of Drought Resistant Sucrose-yield Promoter Sprayed by Aircraft in Large Area of Sugarcane
The present study was designed to investigate the feasibility to apply drought resistant sucrose-yield large scale in order to improve the drought resistance,cane yield and sucrose content in cane in commercial sugarcane production.Experiments were conducted for application of DRCSP sprayed by aircraft in a total of 2 400 hm2 of sugarcane in Guangxi in 2008/2009 and 2009/2010,and components of cane yield and quality were surveyed.The results showed that the treatment spraying DRCSP increased leaves/plant and chlorophyll content in leaf,and resulted in higher Brix,gravity purity of juice and lower reducing sugar in juice,and higher fiber and sucrose contents in cane as compared to the CK,and the most significant improvement for sucrose content was observed at 50 d after application which was increased by 2.23%(absolute value)in 2009/2010,and 1.33% in total average for different time from 30 to 90 d after spray,and it performed better in plant cane than in ratoon cane.The drought resistant sucrose-yield promoter treatment also improved the plant height,stalk diameter and stalk weight,and resulted in 14.3% higher cane yield as compared to the CK,and ratoon cane performed better than plant cane.As a result,the application of drought resistant sucrose-yield promoter prolonged the life of plant leaves,improved the productivity and sugar accumulation of sugarcane,and increased the benefit of sugar production with low cost.