ABSTRACT

Gracilaria salicornia, a common invasive algal species found in Kāneʻohe Bay, Hawaiʻi and around the world, is a potential potassium fertilizer source, but requires high application rates. This study evaluated the use of fresh and anaerobically digested G. salicornia as soil amendments at lower application rates than those required to provide complete plant nutrition to determine whether they increase pak choy growth and the efficiency of fish bone meal fertilizer. Fresh algae reduced the yield gap between low and high fish bone meal rates; however, these effects were only observed on one of two soil types tested.

中文翻译：

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新鲜和厌氧消化的藻类（G. salicornia）作为土壤改良剂对白菜产量和养分浓度的影响

摘要

Gracilaria salicornia是一种常见的入侵藻类物种，在夏威夷 Kāne'ohe 湾和世界各地发现，是一种潜在的钾肥来源，但需要高施用率。本研究评估了使用新鲜和厌氧消化的G. salicornia作为土壤改良剂，施用量低于提供完整植物营养所需的施用量，以确定它们是否会增加白菜生长和鱼骨粉肥料的效率。新鲜藻类减少了低鱼骨粉率和高鱼骨粉率之间的产量差距；然而，这些影响仅在测试的两种土壤类型之一上观察到。