腺叶大颖

腺叶大颖的基本数据

养护难度

适合中级者

寿命

多年生植物。可通过摘顶更新维持

体型

高度15～40厘米，宽度5～12厘米（水中）

适宜温度

22〜25℃

浇水

需要CO₂添加和含铁微量元素

光照强度

需要强光。光照不足时叶片会变绿，容易落叶。即使在强光下，下部叶片也容易脱落。

CO₂和肥料

需要CO₂添加（约20～40毫克/升）。充分供应含铁的微量元素。硝酸盐（5～25毫克/升）和磷酸盐也在一定程度上是必需的。

水温和水质

适宜温度为22～25℃。宜用软水（KH2～10°dH，pH5～7）。

底床和生根

在底床中以间隔逐株种植。由于笔直生长，也适合排列种植。

修剪和繁殖方法

水中几乎不分枝，若要促进侧芽形成可剪去顶端。剪下的顶端可以重新种植。

注意事项

由于属于大颖属，进口时需要种名证明书。同属的特定外来物种卢德维吉亚·丹菲蕨（大花水金梅等）是不同的物种。不要将水草丢弃在野外，不要使其逸出到水族箱外。

关于腺叶大颖

Ludwigia glandulosa is a North American stem plant whose leaves turn vivid wine-red to reddish-purple under strong light. Its upright stems branch little, making it a popular choice among intermediate aquarists.

开始养护腺叶大颖前需要了解的7件事

1. 1Give It Strong Light

   Strong lighting is what brings out the plant's signature wine-red to reddish-purple color. Without enough light, the leaves fade back to green and the lower leaves tend to drop, so place it where it gets plenty of light and isn't shaded by neighboring plants.

2. 2CO2 Injection Is Needed

   This stem plant needs strong light and CO2 injection as well, at roughly 20-40 mg/L. Supply plenty of trace elements including iron, and keep some nitrate and phosphate available too, for stable growth and good coloration.

3. 3Use a Nutrient-Rich Substrate

   Since it also draws nutrients through its roots, a nutrient-rich substrate such as aqua soil helps keep the plant in good condition. When planting, bury the roots firmly so the stems don't float up.

4. 4Trim and Replant to Renew

   The underwater stems grow straight up with almost no branching, so once a stem gets tall, cutting the top and replanting it is an easy way to refresh the plant. As a perennial, regular trimming keeps its shape while letting you enjoy it long-term.

5. 5Watch Seasonal Water Temperature

   Being fully aquatic, its growth and coloration are affected by seasonal shifts in water temperature. Avoiding extremes and keeping the temperature stable year-round helps it stay in good condition.

6. 6Place It Mid- to Background

   Since it grows upright to about 15-40cm and stays fairly narrow underwater, it works well planted in groups in the midground to background of an aquascape. Planting it densely also makes the red coloring stand out more.

7. 7How to Spot a Healthy Plant

   When choosing a plant, look for one with intact lower leaves and vivid leaf color, which makes it easier to settle in after introduction. Straight stems with short internodes are a good sign that the plant was grown under plenty of light.

腺叶大颖的常见问题

Q.Why do the leaves stay green instead of turning red?

A.In most cases, this comes down to insufficient light. Ludwigia glandulosa develops its wine-red to reddish-purple color under strong lighting, and when light is lacking, the leaves revert to green and the lower leaves tend to drop. Adjusting the plant's position or lighting setup can often help.

Q.Is this a good plant for beginners?

A.This stem plant is generally considered suitable for intermediate keepers. If you're not yet comfortable managing lighting and water quality, it may help to gain experience with easier-to-grow plants first before taking this one on.

Q.How large does it grow?

A.Underwater, it typically reaches about 15-40cm in height and 5-12cm in width. Since it grows upright with little branching, trimming to match your tank's height makes it easier to manage.

Q.Is the lack of branching a sign of disease?

A.No, it isn't. Ludwigia glandulosa naturally grows with upright stems that branch very little, which is simply the normal growth habit of this plant.

Q.How can I propagate it?

A.As a perennial, it can be maintained and multiplied through cutting and replanting. Trimming the top of a stem and replanting it in the substrate lets it establish as a new plant.

腺叶大颖种植的实用工具

在图鉴中详细了解腺叶大颖

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