硅磷互作对甘蔗生长及产量效应研究

【目的】研究硅、磷不同配比对广西赤红壤区甘蔗出苗率、生长速率及产量的影响,寻求适合甘蔗生长的最佳硅、磷配比。【方法】采取二次回归D-最优设计在广西农业科学院网室进行盆栽试验,运用SAS统计分析软件对试验结果进行回归分析,建立多项式回归模型,并通过计算机程序对模型进行仿真寻优。【结果】施磷有较好的甘蔗产量收益,而合适的磷、硅配施,有利于甘蔗出苗及生长,并可获得较高的甘蔗产量。甘蔗产量水平与磷素（x1）、硅素（x2）间的回归模型为：y=4.080＋0.254x1-0.068x2＋0.077x1x2-0.315x12-0.207x22。磷和硅最佳施用量分别为7.5g/盆（P2O5）和7.2g/盆（S...

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Published in南方农业学报 Vol. 42; no. 9; pp. 1091 - 1095
Main Author 江泽普 廖青 韦广泼 谭宏伟 梁潘霞 汪羽宁
Format Journal Article
LanguageChinese
Published 广西农业科学院 农业资源与环境研究所,南宁,530007 2011
Subjects
产量
出苗率
甘蔗
生长速率
硅肥配比
生长速率
甘蔗
产量
出苗率
硅肥配比
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ISSN2095-1191
DOI10.3969/j.issn.2095-1191.2011.09.014

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Summary:【目的】研究硅、磷不同配比对广西赤红壤区甘蔗出苗率、生长速率及产量的影响,寻求适合甘蔗生长的最佳硅、磷配比。【方法】采取二次回归D-最优设计在广西农业科学院网室进行盆栽试验,运用SAS统计分析软件对试验结果进行回归分析,建立多项式回归模型,并通过计算机程序对模型进行仿真寻优。【结果】施磷有较好的甘蔗产量收益,而合适的磷、硅配施,有利于甘蔗出苗及生长,并可获得较高的甘蔗产量。甘蔗产量水平与磷素（x1）、硅素（x2）间的回归模型为：y=4.080＋0.254x1-0.068x2＋0.077x1x2-0.315x12-0.207x22。磷和硅最佳施用量分别为7.5g/盆（P2O5）和7.2g/盆（SiO2）,磷与硅最佳配施比例为7.5∶7.2,甘蔗产量为4.12kg/盆,经济效益为1.82元/盆。【结论】建立的甘蔗产量与硅、磷肥用量的回归模型可用作同类甘蔗地土壤的施肥决策和预报,磷（P2O5）和硅（SiO2）的最佳比例为7.5∶7.2。
Bibliography:JIANG Ze- pu,LIAO Qing,WEI Guang- po,TAN Hong- wei,LIANG Pan- xia, WANG Yu- ning （1 Agricultural Resource and Environment Research Institute,Guangxi Academy of Agricultural Sciences, Nanning 530007,China;2 Guangxi Academy of Agricultural Sciences,Nanning 530007,China）
45-1381/S
Objective】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 optimum nutrient simulation model of sugarcane was obtained by computer processing. 【Result】Phosphorus application could make sugarcane obtain higher
ISSN:2095-1191
DOI:10.3969/j.issn.2095-1191.2011.09.014