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对已酸化的棕红壤进行的油菜锰毒缓解研究表明， 施用碳酸钙在提高土壤ｐ Ｈ 和降低土壤交换性锰的基础上， 改善了土壤营养状况， 其中施用０ ． ５ ％ 碳酸钙处理的效果最好， 在这一碳酸钙水平下，土壤硼处于较高的活性， 土壤速效磷钾被油菜幼苗充分利用， 油菜幼苗对营养元素具有最大吸收量，使植株生物学产量达到最大值。酸化的棕红壤只需施用０ ． ５ ％ 的碳酸钙， 其土壤酸碱度便可恢复到正常水平， 如施用更多的碳酸钙， 会造成土壤营养再度失调， 油菜幼苗的生物学产量下降。在施用碳酸钙基础上配施硼素， 可使油菜生物学产量进一步提高， 相应的土壤环境得到更好的改善， 施硼可以降低锰毒植株磷的浓缩效应和提高营养元素的利用效率。因此， 碳酸钙－ 硼配施是缓解棕红壤油菜锰毒的一项重要措施。
Studies on remediation of mangrove rapeseed Mn toxicity of acidified brown-red soils have shown that application of calcium carbonate improves soil nutrient status on the basis of increasing soil p H and reducing soil exchangeable manganese, where 0 is applied. 5% calcium carbonate had the best effect. At the level of calcium carbonate, boron in soil had a higher activity. Available phosphorus and potassium in soil were fully utilized by rapeseed seedlings. Rape seedlings had the maximum absorption of nutrient elements, Production reached its maximum. Acidified brown red soil only need to apply 0. 5% calcium carbonate, the soil pH can be restored to normal levels, such as the application of more calcium carbonate, soil nutrients will again lead to imbalance, rapeseed seedlings biological yield decline. The application of boron fertilizer based on the application of calcium carbonate can further improve the biological yield of rapeseed, the corresponding soil environment has been better improved, boron can reduce phosphorus enrichment of manganese plant poisoning and improve nutrient utilization efficiency. Therefore, the combination of calcium carbonate and boron is one of the important measures to alleviate the manganese toxicity of rape in the brown soil.