设为书签 袋泡茶网 袋泡茶网
X

Ctrl+D 将本页面保存为书签,全面了解最新资讯,方便快捷。

主页 > 新闻中心 > > 正文

冲泡后的袋泡茶可用于堆肥 有助改善土壤结构

袋泡茶网   来源:tea.co.uk   2018-05-07 10:02  
[摘要]植物生物学家肯·汤普森建议将用过的茶包合理利用,很少园丁能够自己制作足够的堆肥,所以不会忽视任何有机物质的来源,茶包堆肥后就能产生很好的植物营养物质来源。...

肯·汤普森是一位对园艺科学有浓厚兴趣的植物生物学家。他在“每日电讯报”上撰写了一个频繁的园艺专栏,广泛讲授并撰写了四本园艺书籍,包括堆肥和无需荨麻。他最近的书是骆驼属于哪里?入侵物种的故事与科学。

袋泡茶可用于堆肥当有机肥料

茶包看起来并不多,是吗?一个用过的茶包,随便丢在垃圾桶里,几乎没有什么值得一时的想法。然而,在英国,我们每天饮用1.65亿杯茶,其中96%是用袋装制成的,因此每天的茶叶量略高于1.58亿袋。即使你无法描绘一亿五千八百万个使用茶袋的热气腾腾的堆(不,我也不能),这显然是值得一想的。

其实有几点想法。首先是每年有超过570亿个茶叶袋是相当多的垃圾填埋场。我们大多数人都有花园,如果你有花园但没有堆肥堆,我认为你有一些解释要做。如果你确实有一堆堆肥,就像你应该那样,那么这就是你的茶包的天然目的地。茶包只是另一种绿色垃圾,还有花园垃圾,厨房蔬菜垃圾以及其他几乎所有曾经存在的东西,包括咖啡渣,头发,蛋盒,谷物包,吸尘器灰尘(主要是尘螨和因此具有高营养价值),美甲剪,兔子或仓鼠床上用品,普通地板清洁和旧棉花或羊毛服装。

毕竟,茶叶袋只是离开了。大多数茶叶当然是山茶花。茶叶会在堆肥堆中分解,就像通常在那里存在的所有其他叶片(例如草坪碎片,杂草等)一样。事实上,对环境如何影响分解感兴趣的生态学家提议使用茶包作为标准参考,可以在世界任何地方购买和使用。然而,他们想要一个袋子,当它埋在地下时会留在一块,所以他们可以测量其内容物的分解。有这样一个茶包,其中的塑料袋,但这是非常不寻常的;不仅如此,它的重点不是你想要在你的堆肥堆中。

幸运的是,在绝大多数英国茶袋中,袋子本身是由香蕉制成的,相当惊人。不是无处不在的黄色水果,而是密切相关的Musa textilis:abacá或马尼拉麻。来自阿巴卡叶茎的纤维既坚固又细腻,实际上就是您想要的茶袋和其他专业纸制品如滤纸和纸币。但是,尽管它的实力,一旦在你的堆肥堆,袋会像任何其他蔬菜物质一样分解。

厨房堆肥袋中的茶包偶尔会看到茶包不是完全可生物降解的,这是事实 - 至关重要。为了使袋子能够正确密封,它含有非常少量的塑料聚丙烯,它在加热时会熔化,因此可用于形成可靠的密封。但是,尽管聚丙烯不会在堆肥堆中分解,但它会分解,因此在堆肥堆中六个月后很难找到任何茶包的痕迹。此外,与其他塑料废物(如手提袋,瓶子和塑料包装)相比,所涉及的数量很少,海水几乎不会下降。

但是不要介意你可以为茶包做什么,茶包能为你做什么?很少园丁能够自己制作足够的堆肥,所以不会忽视任何有机物质的来源。单个茶叶袋中可能只有3克以上的茶,但每年仍有超过18万公斤有用的有机物质(干重 - 在潮湿状态下明显更多)。我们也不应该忽视袋子本身,这是茶叶重量的十分之一左右。

此外,尽管堆肥中有机质含量较高,可以改善土壤结构,保持水分并抑制杂草,但其中也有有益的植物营养物质,茶袋也可以作出贡献。随着茶叶的消费,茶叶实际上已经达到营养浓度的高端,氮含量约为4%,磷含量约为0.5%,所以英国每年消费的茶叶包括超过7,000公斤的氮和近1000公斤的磷。所有的事情都考虑到了,有一件事是肯定的 - 使用的茶叶袋太贵了,不能扔掉。

 

原文:

Ken Thompson is a plant biologist with a keen interest in the science of gardening. He writes a frequent gardening column in the Daily Telegraph, lectures extensively and has written four gardening books, including Compost and No Nettles Required. His most recent book is Where do Camels Belong? The Story and Science of Invasive Species.
A tea bag doesn’t look like much, does it? And a used tea bag, tossed casually in the bin, hardly seems worth a moment’s thought. Yet in Britain we drink 165 million cups of tea every day, and 96% of those are made with a bag, so that’s a little over 158 million tea bags per day. Even if you can’t picture a great steaming heap of 158 million used tea bags (no, neither can I), that clearly is worth a thought.
In fact, several thoughts. The first is that over 57 billion tea bags per year is quite a lot of landfill. Most of us have gardens, and if you have a garden but don’t have a compost heap, in my opinion you have some explaining to do. If you do have a compost heap, as you should, then that is your tea bag’s natural destination. Tea bags are just another variety of green waste, along with garden waste, kitchen vegetable waste, and almost anything else that used to be alive, including coffee grounds, hair, egg boxes, cereal packets, vacuum-cleaner dust (mainly dust mites and flakes of human skin, and therefore highly nutritious), nail clippings, rabbit or hamster bedding, general floor sweepings and old cotton or wool clothing.
Tea bags are, after all, just leaves. Mostly tea, of course, Camellia sinensis. Tea leaves will break down in your compost heap, just like all the other leaves (e.g. lawn clippings, weeds etc.) that normally go in there. In fact, ecologists who are interested in how the environment affects decomposition have proposed using tea bags as a standard reference that can be bought and used anywhere in the world. However, they want a tea bag that will stay in one piece when buried, so they can measure decomposition of its contents. There is such a tea bag, in which the bag is plastic, but that’s very unusual; not only that, it’s emphatically not what you want in your compost heap.
Fortunately, in the overwhelming majority of British tea bags, the bag itself is made, rather surprisingly, from bananas. Not the ubiquitous yellow fruit, but the closely related Musa textilis: abacá or Manila hemp. The fibre from the leaf stalks of abacá is both strong and fine, in fact just what you want for tea bags and other specialized paper products such as filter paper and banknotes. But despite its strength, once in your compost heap the bag will break down just like any other vegetable matter.
Teabags in a kitchen compost binYou will occasionally read that tea bags are not entirely biodegradable, which is true - up to a point. So that the bag will seal properly, it contains a very small quantity of the plastic polypropylene, which melts when heated and so can be used to make a secure seal. But although polypropylene does not break down in the compost heap, it does break up, so it’s hard to find any trace of a tea bag after six months in a compost heap. Moreover the quantity involved is minute, scarcely a drop in the ocean compared to other plastic waste, such as carrier bags, bottles and plastic packaging.
But never mind what you can do for tea bags, what can tea bags do for you? Few gardeners can make enough of their own compost, so it pays not to ignore any source of organic matter. There may be only just over 3 g of tea in a single tea bag, but that’s still over 180,000 kg of useful organic matter every year (dry weight - obviously a lot more in the soggy state). Nor should we ignore the bag itself, which is about 1/10 of the weight of the tea.
In addition, although it’s the bulky organic content of compost that improves soil structure, retains moisture and suppresses weeds, there are useful plant nutrients in there too, and here again tea bags can make a contribution. As leaves go, tea is actually towards the high end of nutrient concentrations, with about 4 % nitrogen and about 0.5 % phosphorus, so Britain’s annual consumption of tea bags represents over 7,000 kg of nitrogen and nearly 1,000 kg of phosphorus. All things considered, one thing’s for sure - used tea bags are far too valuable to just throw away.

 

(翻译工具:谷歌翻译)

相关阅读: 袋泡茶 英国 堆肥
分享到: