Here are a few options for the WordPress post tag description, along with explanations to help you choose the best one:

**Option 1 (Focus on Definition):**

* **Description:** 指由動植物殘骸分解後形成的暗色、富含腐殖質的有機物質。對土壤的肥沃度和植物的生長至關重要。 (Refers to the dark, humus-rich organic matter formed from the decomposition of plant and animal remains. Crucial for soil fertility and plant growth.)

* **Explanation:** This is a straightforward, technical description, good if you intend to use the tag on primarily scientific or educational content. It clearly defines “腐植” within the agricultural or environmental context.

**Option 2 (Focus on Importance):**

* **Description:** 提升土壤健康和植物活力的關鍵。了解腐植如何增強土壤結構、保水能力和養分供應，為您的花園或農田帶來生機。 (The key to improving soil health and plant vitality. Learn how humus enhances soil structure, water retention, and nutrient supply, bringing life to your garden or farmland.)

* **Explanation:** This version emphasizes the benefits of “腐植,” making it attractive to a broader audience interested in gardening, agriculture, or environmental sustainability.

**Option 3 (More Concise):**

* **Description:** 土壤腐植質，對植物生長及土壤健康至關重要的有機物質。(Soil humus, an organic matter essential for plant growth and soil health.)

* **Explanation:** Short, direct, and easy to understand. Suitable for a general audience.

**Option 4 (Adding a Keyword or Use Case):**

* **Description:** 腐植如何影响土壤健康和作物产量？了解腐植的构成、作用，以及如何在花园或农田中促进其形成。(How does humus affect soil health and crop yields? Learn about the composition, function, and how to promote its formation in your garden or field.)

* **Explanation:** This option includes a question and keywords to attract users interested in the topic and relates to a specific use case (e.g., gardens or fields), making it more appealing.

**How to choose the best option:**

* **Target Audience:** Consider who will be reading the posts you’re tagging. If it’s a gardening blog, Option 2 or 4 might be most suitable; if it’s a scientific journal, Option 1 is probably better.
* **Content Type:** What kind of posts will this tag be used for? Does the tag relate to academic articles? Or consumer DIYs?
* **Length & Clarity:** Ensure the description is clear and concise. Don’t make it longer than necessary.

**To add the description in WordPress:**

1. **Go to your post tags:** In your WordPress admin panel, navigate to **Posts > Tags**.
2. **Find the tag:** Locate the tag “腐植” in your list.
3. **Edit the tag:** Click the “Edit” link below the tag name.
4. **Add the description:** You’ll find a “Description” text box. Paste your chosen description into this box.
5. **Update the tag:** Click the “Update” button.

Good luck! Choose the option that best fits the content and purpose of your WordPress website. Remember to always consider the user experience.