Nutrient cycling of the coffee ecosystem is often characterized by nutrient losses during the harvest, tree’s growth, leaching and erosion. The “Coffee Rejuvenation Strategies in Vietnam” has risked not being complete on schedule, with the low survival rate of seedlings on replanted soil, due to the nutrient loss and imbalance supplements after a long-term of monoculture and intensive cultivation. In this study, measures, including biochemical and organic treatments were applied to replanted coffee farm, in order to supplement the loss of nutrient cycling. Survival rate, growth indicators, and soil properties from the controls and treatments, were monitored and compared during the experimental periods. The results suggested the optimal tillage model as follow: Remove old coffee trees with their stumps and roots; liming 1.5 tons/ha; dry tillage soil for the first 6 months; Intercrop Mexican marigold (Tagetes erecta) with new coffee plants for the next 6 months; From the second year, apply 5 kg of microbial organic fertilizer /hole/year; bury 30 kg of green manure/hole/2–3 years; apply NPK fertilizers according to the governmental recommended procedure. This would be a proposed integrating tillage method to supplement the lost nutrients and restore the fertility of replanted coffee soil in Vietnam.

中文翻译：

---

补充越南种植咖啡种植园养分循环损失的拟议技术

咖啡生态系统的养分循环通常以收获期间养分流失，树木生长，淋溶和侵蚀为特征。越南长期以来的单一栽培和精耕细作导致营养损失和营养补充失衡，导致越南的咖啡复兴战略未能如期完成，因为在重新种植的土壤上幼苗的成活率较低。在这项研究中，包括生化和有机处理在内的措施被应用于重新种植的咖啡农场，以补充养分循环的损失。在实验期间，对对照和处理的存活率，生长指标和土壤特性进行了监测和比较。结果表明，最佳耕作模型如下：去除老咖啡树的树桩和根部；石灰1.5吨/公顷; 前六个月的干耕土壤；间作墨西哥万寿菊（Tagetes erecta ）在接下来的6个月内将使用新的咖啡植物；从第二年开始，每孔/年施用5公斤微生物有机肥料；埋30公斤绿肥/穴/ 2-3年；根据政府推荐的程序施用氮磷钾肥料。这将是一种建议的综合耕作方法，以补充越南流失的养分并恢复重新种植的咖啡土的肥力。