【摘要】 针对华南酸性红壤蔗区甘蔗生产的土壤限制因子,通过布置田间试验,研究了增施有机肥、镁肥和石灰,以及施用钙镁磷肥对甘蔗农艺、产量及品质性状的影响。结果表明:适量增施石灰、钙镁磷肥及有机肥,可提高土壤p H;不同处理间的甘蔗萌芽没有显著差异,而株高、茎径、蔗产量及蔗糖分等存在差异。与常规处理相比,增施镁肥的甘蔗株高及产量,增施有机肥的茎径及蔗产量,增施石灰的甘蔗糖分有显著提高;同时,与常规处理相比,增施有机肥、镁肥、石灰及施用钙镁磷肥的甘蔗收益分别提高31.93%、40.74%、14.92%和18.74%。更多还原

【Abstract】 A field experiment was carried out in acid soil of South China to study the effect of applying organic, magnesium sulfate, calcium magnesium phosphate and lime on sugarcane agronomic traits, yield and sucrose content. Results showed that the soil p H value increased with application of lime, calcium magnesium phosphate, and organic fertilizers. There was no significant difference in sugarcane germination among the treatments. However, there were significant differences in plant height, diameter, cane yield and sucrose content. Plant height and cane yield with magnesium sulfate, cane diameter and cane yield with organic fertilizer, and the sucrose content with lime were higher than that of the CK. Also, the net incomes were increased by 31.93%, 40.74%, 14.92% and 18.74% with the organic, magnesium sulfate, calcium magnesium phosphate and lime respectively, compared with that of the CK.更多还原