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都會農耕: 零成本的七種菜園加分法


都會農耕: 零成本的七種菜園加分法

7 No-Cost Ways to Grow More Food in Your Garden


by Sami Grover, 翻譯: Sunny Arky

When I wrote a post about products that help promote soil biodiversity, some commenters were skeptical about commercial products that are shipped long distances with all the packaging and waste that goes with them.
They may have a point. After all, the secrets of healthy soil usually start at home.
And many of them are free. Here are some of our favorites

堆肥

沃土首重養土,培養土壤中益生菌,你可以選用肥料或有機物。不管蚯蚓堆肥或紙箱堆肥,利用身邊的素材就能自製肥料,不僅補充作物養分並培養土壤益生菌,並提升保水及排水能力,並減少垃圾量!

Compost everything

First and foremost, if you want to build healthy, lively soils, you first have to add food for the soil microbes that inhabit it. That food comes in the form of compost and other organic matter. Whether you are making worm compost or composting cardboard boxes, creating your own soil amendments from materials that would otherwise go to waste is a no-brainer. Not only does it add plant nutrients and beneficial microorganisms to your soil, it also aids with both water retention and drainage and reduces the amount of crap you are sending to landfill too.


覆蓋、覆蓋、覆蓋

土表覆蓋是減少用水的良方,同時抑制雜草、避免土壤乾燥或雨水沖刷。同時ˇ對土壤保溫,以利養分吸收。你可以花市購買覆蓋物(今年我用松枝),但也有許多免費的材料,例如紙箱、報紙、枯枝落葉都很好用。如果你的花園種有足夠的植物,也可利用chop-n-drop覆蓋法,也就是將枯枝老葉鋪土覆蓋(我有時就用粗糙過老的瑞士甜菜覆蓋)。

Mulch, mulch, mulch

Mulching is a great way to reduce water use, suppress weeds and protect soils from drying out or erosion. It also keeps soils warm, meaning that more nutrients are available to plants when they need them. You can, of course, buy mulch from the garden store (I have been using bales of pine straw this year), but there are also plenty of readily-available free materials that can be put to use. Cardboard, newspapers, lawn clippings and shredded leaves are all useful in their own way. If you have enough plant material growing in your garden, you can even explore chop-n-drop mulching where you simply cut back excessive growth and let the cuttings fall as a mulch. (I sometimes do this with overly tough and overgrown chard leaves.)

排泄物堆肥

這不是人人都適用,如果你想利用任何市售肥料(不論是否為有機)為作物補充養分,你可能會想找到更貼近家庭生活的資源。我在「用排泄物拯救人類的五種方式」(5 ways that urine can help save humanity,
原文:http://www.treehugger.com/clean-water/5-ways-urine-can-help-save-humanity.html
)文中提到,尿液不只能取代合成肥料,更有研究指出利用尿液澆灌的蕃茄與對照組相較之下,成長情況明顯較佳。一般常見的用法是一份尿液加九份清水稀釋(很多人建議可以直接尿在水桶,再以雨撲滿收集的雨水稀釋使用。)

Use urine as fertilizer

This one is probably not for everyone, but if you supplement your plant's nutrients with shop-bought fertilizers of any kind (organic or not) you might want to consider a source closer to home. As mentioned in my post on 5 ways that urine can help save humanity, not only can pee replace synthetic fertilizers, but research has shown that tomatoes grown with urine actually out perform their conventionally grown counterparts. Most sources I've looked at suggest diluting 1 part urine with 9 parts water. (Many folks suggest simply peeing in a watering can and then filling up the rest from your rain barrel.)

保種和扦插

對節儉的人來說,保種不只是減少作物換季時的種苗開銷,同時可以利用保種培育最適合當地氣候環境的品種,當然對土壤裡共生的微生物和小動物。這也表示能減少病蟲害並有更多產量。或者藉由扦插獲得種苗,以蕃茄為例,摘除的側芽也可以扦插。

Save seeds and take cuttings

For the frugal, saving seeds is not just a great way to reduce your expenditure each planting season. Over time, you can also breed unique varieties of plants that have adapted to your specific climate and conditions, not to mention co-evolved with the micro-flora and -fauna that inhabit your soils. And that should mean lower instances of disease and pests and, hopefully, better yields too. It's worth noting that you can also increase the number of plants you're growing by taking cuttings—tomatoes, for example, can be grown from the side-shoots you normally pinch off during pruning.

收集雨水

集雨也是省錢良方。同時大部份不知道的是雨水灌溉對植物更好。根據布魯克林植物園指出,雨水澆灌的好處包括較少汙染物,較自來水接近室溫,因此比較不會傷根,雨水本身不含氯,因為氯會破壞益生菌影響植物生長。


Collect rainwater

Collecting rainwater is another one of those activities that saves money in-and-of itself by reducing your water bills. It's perhaps less well know, though, that rainwater harvesting can also benefit the plants in your garden too. According to the Brooklyn Botanic Garden, the benefits of harvested rainwater include that it typically has fewer contaminants, it is kept at a luke warm temperature and thus doesn't shock plant roots as tap water can, and it also is not treated with chlorine, a chemical which may destroy soil microbes and inhibit plant growth.

善待蜜蜂


大部分的人都知道植物依賴昆蟲授粉。由於我們所吃的食物不是果實就是種籽,代表蜜蜂或其他授粉者扮演著重要的角色。你當然可以買華麗的花束來吸引蜜蜂,但是也有更便宜的作法,只要讓植物持續生長直到開花,就能提供充足的蜜源(反正你也不會想除草!),周圍放上一些枯木就能提供非群居蜂類棲息。或許我們不需要詳述,但善待蜜蜂最簡單的是不要再浪費錢購買傷害牠們的化學藥物。

Encourage bees

Most folks know that pollinators are absolutely central to plants' reproductive processes. Because much of what we eat is either fruit or seed, that means bees and other pollinators are central to what we eat too. You can, of course, encourage bees by buying fancy wildflower packets—but there are cheaper ways too. Simply leaving plants and weeds to flower can be a great way to provide forage (you didn't really want to mow the lawn anyway!), and leaving dead wood around can provide habitat for solitary bees too. We probably don't need to tell TreeHugger readers this, of course, but the simplest way to support bees is to stop wasting money on the chemicals that kill them.


別亂挖洞


這對傳統的園藝人士來說很難,但在特定情況下可考慮不挖地菜園的轉換,建立不會被踐踏的苗床,鋪上厚厚的覆蓋層及大量的有機物,苗床能保護土壤中的蚯蚓、益生菌、真菌等,這些元素有助於保持沃土。
雖然苗床未必能提高種苗產量,在網路園藝論壇仍有不少爭論,但身為一個懶人,我保證這樣會大幅減少你需要花費在每一棵作物的勞務,同時提升土壤固碳量。這些都是苗床法的好處,也是我在書中值得一提的。

Don't dig

This one's often a little hard for traditional gardeners to grasp, but a strong case can be made for transitioning to a no-dig vegetable garden. By building raised beds which are NEVER walked on, heavily mulched and fed by top dressings of large amounts of organic matter, proponents of no-dig gardening say it protects vital soil life including worms, microbes and mychorrizal fungi which all play a part in maintaining soil fertility.

Whether no-dig gardening actually increases garden productivity per plant is a matter of much debate in the gardening forums online, but as a committed lazivore I can confirm that it greatly reduces the amount of physical labor you put in for each "unit" of harvest and increases the amount of carbon stored in the soil too. These are both yields of their own kind that are well worth celebrating in my book.

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燈籠果

燈籠果 燈籠果屬於醋栗科茶蔍屬多年生灌木。株叢高1.2 米左右,果子是一個套着燈籠型莢子的小圓果,比拇指大一點,里面有很多小籽。未成熟時味極酸,成熟後呈黄綠色,完全成熟後呈紫紅色,非常甜,可以用來烤果餅,做果醬。燈籠果花朵燈籠果原產祕魯和智利,但是並不是什麼重要得產品。當地人隨便吃一點,偶爾也在菜市場看到。但是被廣泛的引入各熱帶和亞熱帶地區,所有番茄可以存活的地方都可以種。果醬和罐頭是居民的常用品,也經常出口。中部非洲國家,如加蓬,也有小型果園。 一、燈籠果的生育週期 1、發芽期:從種子吸水萌動到真葉露心為發芽階段,由播種到種子萌芽長出土,達到80%以上,大約需要7~15天。 2、幼苗期:苗出齊後,有80%的植株達到三片真葉,即第一個花萼形成前約20~30天。此期主要是根、莖、葉的生長時期,在生產上要採取良好的措施,培育生長發育健壯的幼苗,為高產、優質、豐產打下良好的基礎。 3、開花期:從開第一朵花開始到最後開的一朵花所持續的天數,為開花日數。最早開的第一朵花達5%的植株為開花始期,以月、日表示,植株最後開的花,而漿果又能在霜前充分成熟的日期為終花期。 4、結果期:結果期分為始期和終期。結果始期,即有5%的植株落花後,坐住果的日期。結果終期,即是終花期的花坐住果的日期。   5、成熟期:漿果成熟期,可分為始熟期和終熟期。始熟期,即有5%的植株第一個果成熟的日期。終熟期即最後充分成熟漿果的日期。燈籠果是由下向上陸續開花結果成熟的。第一個花果實膨大生長,第2~4朵花相繼現蕾、開花和結果。 二、燈籠果對環境條件的要求:   1、溫度:燈籠果性喜溫,不耐霜凍。種子發芽以30℃左右發芽迅速;幼苗生長期20~25℃、夜間不低於17℃適宜生長;開花結果期白天以20~25℃、夜間不低於15℃為宜,否則易引起落花落果。氣溫10℃以下植株停止生長。0℃以下植株受凍。經調查看,幼苗耐低溫能力不成熟,所以露地生殖時期不能過早,而必須在晚霜過後方可栽植。   2、光照:燈籠果對光照要求比較敏感,需要充足的光照。在3000~4000米燭光範圍內,生長發育協調,果實品質優良。光照不足時,植株徒長而細弱,產量下降,漿果著色差,品味不佳。因此,在生產上必須注意種植密度的合理性和打尖、抹芽、整枝的必要性。   3、水分:燈籠果需水較多,尤其在漿果開始成熟前期,枝葉和果實同時生長,需水較多,當漿果大量

蔬菜對溫度日照條件的要求

蔬菜對溫度日照條件的要求 全日照  8個小時日照 瓜類、茄果類、豆類、山藥、豆薯(地瓜)。番茄、黃瓜、茄子、辣椒等喜溫中、強光性 蔬菜夏秋季生產,玉米、青椒、西瓜、南瓜、西紅柿、茄子、芝麻、向日葵類。 其次是根莖類,如:馬鈴薯、甜菜、胡蘿蔔、白蘿蔔、甘藷、山藥等等。至少需半日照,才能生長,芋頭雖喜歡全日照,但比其他蔬菜耐蔭。  需要中等光照大白菜、甘藍、芥菜、蒜、洋蔥。  長日性蔬菜白菜、甘藍、芥菜、蘿蔔、胡蘿蔔、芹菜、菠菜、萵苣、蠶豆、豌豆、大蔥、洋蔥。 短日性蔬菜豇豆、扁豆、莧菜、空心菜。          中光性蔬菜黃瓜、番茄、茄子、辣椒、菜豆 菜豆 菜豆喜溫暖,不耐高溫和霜凍。菜豆種子發芽的適溫為20-30℃;在40℃以上的高溫和10℃以下的低溫,種子不易發芽。幼苗生長適宜氣溫為18-25℃。花芽分化的適宜氣溫為20-25℃,過高或過低溫度易出現發育不完全的花蕾、落花。 菜豆對光照強度的要求較高。在適宜溫度條件下,光照充足則植株生長健壯,莖的節間短而分枝多,開花結莢比較多,而且有利於根部對磷肥的吸收。當光照強度減弱時,植株易徒長,莖的節間長,分枝少,葉質薄,而且開花結莢數少,易落花落莢。 菜豆根系強大,能耐一定程度乾旱,但喜中度濕潤土壤條件,要求水分供應適中,不耐澇。生長期適宜土壤濕度為田間最大持水量的60%-70%,空氣相對濕度以80%為宜。開花結莢期對水分最敏感,此期土壤乾旱對開花結莢有不良影響,開花數、結莢數及莢內種子數減少。土壤水分過大時,下部葉片黃化,早脫落。空氣濕度過大會引起徒長、結莢不良。 菜豆具有深根性和根瘤菌,對土壤的要求不甚嚴格,但仍以土層深厚肥沃、排水良好的輕砂壤土或粘質壤土為好。土壤過於粘重、低溫、排水和通氣不良則生長不良,炭疽病重。菜豆喜中性至微酸性土壤,適宜的土壤pH為5-7.0,其中以州6.2-6.8最適宜。菜豆最忌連作,生產中應實行2-3年輪作。 菜豆生育過程中,主要吸收鉀和氮較多,還要吸收一定量的磷和鈣,才能良好發育。結莢期吸收磷鉀量較大。磷鉀肥對菜豆植株的生長發育、根瘤菌的發育、花芽分化、開花結莢和種子的發育等均有影響。缺乏磷肥,菜豆嫩莢和種子的品質和產量就會降低。缺鈣,幼葉葉片捲曲,葉緣失綠和生長點死亡。缺硼,則根係不發達,影響根瘤菌固氮,使花和豆莢發育不良。

為何冰箱冷凍室非得是零下18度?

為何冰箱冷凍室非得是零下18度? 不少家庭的冰箱有led面板,可顯示冷藏室和冷凍室溫度。每次看到那個零下18℃,不少人,包括筆者在內就會禁不住提出一個小疑問:為什麼冷凍室溫度非得是零下18℃?最多零下1℃不就結冰了嗎?搞這麼低溫度實在是浪費電呢。 聰明如很多人是這樣推測的 百思不得其解,於是很多人,包括筆者在內就開始推測後面的機制了。冷凍室的零下18℃其實不費電,相反,它是節約電力的一個好措施。為何? 冰箱隔一段時間,內部溫度升高後,它就要啟動壓縮機,嗡嗡嗡的。頻繁啟動壓縮機不僅耗電,冰箱的壽命也會降低,還有就是很吵人。怎麼辦?簡單,先把冷凍室的溫度搞得低低的,比如零下18℃左右。 然後,冷凍室的冷氣往上走,來到冷藏室,如此,就能長時間保持冷藏室的溫度處於0到8℃以內了。 待冷凍室的冷氣散失過多,溫度升高到零下幾度時,再啟動冰箱的壓縮機把溫度再次降到零下18℃,如此,冰箱的啟動次數就變少了。 實際是這樣嗎?很遺憾,不是。 原因之一:不一樣的水 水到零度以下就結冰了,這是絕大多數人的認識。然而仔細一想,這不適用於冰箱的冷凍室。因為冷凍室存放的不是上百升礦泉水,而是各種各樣的食物。 食物中含有大量水這沒錯,但這些水同時含有大量的鹽、糖等物質。就像每1升海水中大約含有35克鹽,所以平均起來,要到零下1.33℃時海水才會結冰。 因此,要想把食物凍結,並不是溫度只要達到水的冰點就可以,得保證足夠低的溫度,食物中的水才能凍結,這很重要,因為食物中只要有液態水存在,這就等於是為各種細菌的繁殖提供了必備條件。 圖為牛肉薄片在不同溫度和不同時間內測得的牛肉中凍結水量的曲線。 當牛肉薄片的溫度為零下4℃時,只有70%的水分被凍結;溫度下降到零下9℃左右時,也還有3%的水分未凍結;即使牛肉薄片的溫度降低到零下18℃時,也不是100%的水分都被凍結住。 原因之二:嗜冷微生物 根據微生物對不同溫度的適應範圍,可將微生物分為三大類,嗜熱菌、嗜溫菌和嗜冷菌。在食物的冷藏和冷凍過程中,我們面對的「敵人」是嗜溫菌和嗜冷菌。 一般來說,能引起食物腐敗和食物致毒的嗜溫菌,在低於3 ℃情況下不產生毒素,當然,個別菌種例外。 而對於嗜冷菌,一般得在零下10 ℃到零下12 ℃時才會停止生長。 有的黴菌甚至要到零下15~零下18 ℃時才