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研究结果表明,甘蔗对土壤的酸碱性适应性较强,pH4.5～7.5的范围都可获得高产。甘蔗产量与土壤中的各种养分都没有明显的相关性。高产甘蔗的土壤碱解N、速效P、速效K、交换性Ca、有效Fe、有效Mn、有效Cu、有效Zn等含量水平较高,有效S和交换性Mg含量中等,有效B含量水平较低。高产甘蔗对土壤中的各种有效养分含量有最低要求。本次调查获得的各种有效养分的最低含量参考指标分别为:碱解N 64.2mg/kg、速效P为8.7mg/kg、速效K为52.6mg/kg、交换性Ca 1.62cmol/kg、交换性Mg 0.28cmol/kg、有效S 12.4mg/kg、有效B 0.08mg/kg、有效Zn0.42mg/kg、有效Cu 0.61mg/kg、有效Fe 10.9mg/kg、有效Mn 3.5mg/kg。
The results show that sugarcane has strong adaptability to soil pH, high yield can be obtained in the range of pH4.5 ~ 7.5. No significant correlation was found between sugarcane production and various nutrients in the soil. High-yield sugarcane had higher levels of soil available N, available P, available K, exchangeable Ca, available Fe, available Mn, available Cu, available Zn and so on, with moderate and effective S and exchangeable Mg contents, and lower available B . High-yield sugar cane has the lowest requirement for various effective nutrients in the soil. The reference indicators of the minimum effective content of various nutrients obtained in this survey were as follows: N 64.2mg / kg, P 8.7mg / kg, available K 52.6mg / kg, exchangeable Ca 1.62cmol / kg, exchange 0.08 mg / kg effective B, 0.42 mg / kg effective Zn 0.42 mg / kg effective Cu 0.61 mg / kg effective Fe 10.9 mg / kg effective Mn 3.5 mg / kg.