南方农业学报2011，Vol.42Issue(9)：1091-1095,5.
硅磷互作对甘蔗生长及产量效应研究
Interactive effect of silicon and phosphorus on yield and growth of sugarcane
摘要
Abstract
The present experiment was conducted to study the effects of different ratios of phosphorus and silicon on germination rate, growth and yield of sugarcane in lateritic red soil area of Guangxi, and to search for the optimum ratio of phosphorus and silicon suitable for sugarcane growth. [Method]A pot experiment was conducted in net house of Guangxi Academy of Agricultural Sciences using quadratic regression D-optimal design. The polynomial regression models for fertilizers application and quadratic of two factors were established by using SAS statistical analysis software, and the opti mum nutrient simulation model of sugarcane was obtained by computer processing. [ Result ] Phosphorus application could make sugarcane obtain higher yield and benefit, while the suitable ratio of phosphorus and silicon were found beneficial for sprouting and growth of sugarcane. The regression model of sugarcane yield(y), phosphorus amount (x1) and silicon amount (x2) was y=4.080+0.254xi-0.068x2+0.077xixr-0.315x12-0.207x22. The optimum ratio of silicon and phosphorus was7.5 and 7.2 g/pot, respectively, the best ratio was P2O5:SiC>2=7.5:7.2, and under this circumstance, the yield and economic ben efit of sugarcane were 4.12 kg/pot and 1.82 yuan/pot, respectively. [Conclusion]The best ratio of phosphorus (P2O5) and silicon (SiO2) were 7.5-7.2 under the present experimental conditions, the established regression model between sugarcane yield, phosphorus and silicon amount was recommended to apply to the decision and prediction of soil in sugarcane field.关键词
甘蔗/硅肥配比/出苗率/生长速率/产量Key words
sugarcane/ ratio of phosphorus and silicon/ germination rate/ growth rate/ yield分类
农业科技引用本文复制引用
江泽普,廖青,韦广泼,谭宏伟,梁潘霞,汪羽宁..硅磷互作对甘蔗生长及产量效应研究[J].南方农业学报,2011,42(9):1091-1095,5.基金项目
广西自然科学基金项目(桂科自0991203) （桂科自0991203）
广西农业科学院科技发展基金项目(桂农科201 1jz07) （桂农科201 1jz07）
广西农业科学院基本科研业务专项项目[ 200821(基)] （基）
