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養耕共生和都會農場可以創造綠色就業嗎

養耕共生和都會農場可以創造綠色就業嗎?


By Charles Redell報導, 2011/9/16
In the wake of President Obama's jobs speech last week, the national conversation is intently focused on growing jobs -- and particularly green jobs -- in the weak economy.

在上週歐巴馬總統就職演說後,國家在疲弱的經濟中專心發展綠色就業機會。

This week, we saw a new twist on green jobs, and one that promises something of a Holy Grail of sustainability: Creating jobs to grow sustainable food products at an economically viable scale that will be consumed in the local foodshed.
本週我們看到了一個新的綠色就業的企機,並承諾永續發展的使命:創造綠色就業,從永續的糧食產品創造經濟規模增家本地食材的消費規模。
That's the pitch from the Recirculating Farms Coalition (RFC), which launched earlier this week. The group says the type of farms and farming it promotes can achieve those goals and more, including urban job creation.
這是農場聯盟(RFC)的一大突破,稍早本週該組織說,都會農場和都會農業,絕對可以實現創造城市 的就業機會。
The coalition is promoting sustainable, closed-loop farms that grow local, fresh food and, it says, create green jobs using clean, recycled water in place of soil. The farms can produce plants, fish, or a combination of both -- a method called aquaponics. In its first year, the group aims to increase public awareness of recirculating farms and their benefits, help develop better technology and approaches for the 30-year old practice and work with policy makers to make it easier for new farms to start operations.
該聯盟是促進可永續循環的農場,來生產新鮮食物,它說,創造綠色就業,使用潔淨的循環水的農場。農場能產生植物,魚類,或者養耕共生。在第一年,集團目標是增加循環農場和提高公眾意識,幫助開發更好技術,規劃30年新農場的營運。
Recirculating farms reuse as much as 99 percent of their own water and recycle organic waste from fish into nutrients for other crops. They are endlessly customizable so can be placed in just about any underused, or otherwise unwanted urban environment, according to the Coalition's executive director Marianne Cufone.
"These farms are scalable," she said, speaking after touring one covering just 1/20th of an acre located behind a strip mall in Orlando, Fla. "I've seen some the size of a desktop growing herbs and goldfish and I've seen ones covering acres and acres."
The crops grown on recirculating farms can vary widely. On the small Florida farm she'd just seen, Cufone said lettuce and herbs were being grown alongside Tillapia. Other farms grow produce like tomatoes and eggplants and a variety of higher-end fish stocks.
Bail and mint growing in towers on the rooftop of Bell Book and Candle restaurant in the West Village (Manhattan), New York.Urban farms are taking off across the country. Will Allen, whose Growing Power farm is a model of green urban farming discussed the "good food revolution" on GreenBiz.com in 2009, and Leanne Tobias profiled the rise of urban farming this summer.
One of the biggest hurdles for commercial recirculating farms is permitting. Some jurisdictions view them as labs while others view them as traditional agriculture operations, Cufone says. Neither one fits the bill, so RFC is working to change permitting and to develop a checklist for potential operations to help smooth the permitting and inspection process.
On the federal level, RFC aims to convince elected representatives and government agencies [PDF] that recirculating farms are economically better, safer environmentally and healthier than ocean-based aquaculture.
From a sustainability perspective as well as an economic perspective, advocates of recirculating farms have some strong numbers to back them up.
While Cufone wasn't able to give me an ROI on an aquaponics system, the manufacturer of a home-based aquaponics kit conducted a study [PDF] that found they can pay for themselves in 2.5 years. And taking the raw production numbers from one well established farm, commercial-sized farm shows what kinds of returns might be possible.

Bail and mint growing in towers on the rooftop 
of Bell Book and Candle restaurant in the West
Village (Manhattan), New York.
The farm, which has been operating at the University of the Virgin Islands (UVI) for the last 20 years, costs $40,000 annually to operate its four fish tanks and six 100-foot vegetable beds. It produces 1,400 cases of leaf lettuce and 11,000 pounds of fish annually. Just using back-of-the-envelope calculations based on food prices at Safeway.com, that's at least $99,000 in retail value of fish (if it's tilapia) and almost $73,000 in lettuce (if it's romaine lettuce, at 18 heads per case).
Financially, a farm like this earns its keep, and environmentally, the story is much the same. The UVI aquaponics farm produces all that food while using just shy of 19,000 gallons of water [PDF]. One head of lettuce produced there requires about 7.5 gallons of water. On a traditional farm, it would need just shy of 16 gallons to grow, according to RFC.
The job-creation potential of recirculating farms, which RFC is promoting, is a bit muddier. The idea is to "go back to where we once were," Cufone said. "We used to farm and grow food for ourselves and maybe for our neighbors who were good at other things. We're moving back to creating our own jobs."

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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
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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。

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蝶豆花

蝶豆花 原產拉丁美洲的蝶豆花是一種典型的熱帶蔓藤植物,全年盛開。
butterfly pea,拉丁語叫:Clitoria ternatea,泰語叫Dok Anchan
中文名叫蝶豆花,藍蝶花,藍蝴蝶、蝴蝶藍花,還有蝴羊豆、豆碧等別名。
用蝶豆花當作高品位浪漫的茶品飲用、以及當作天然食品色素制作糕點是拉丁美洲和南洋國家的風情和習俗。
蝶豆花的味道自然甘甜,南洋國家的一些五星級酒店通常把蝶豆花茶當作高貴的迎賓茶來接待貴賓。
營養價值 蝶豆花具有豐富的維他命A,C和E, 而且可以提高免疫力, 幫助和促進皮膚的彈力和骨膠原, 同時還具有補腦,促進腦的活力,防止胃痛,抗憂郁、抗壓力、鎮靜、止驚厥、緩和情緒等天然保健功效。
蝶豆花中的天然藍色素,也是有療效的。如果將其加入檸檬並調制成花茶飲品,就是保健心臟血管的絕佳飲料。
食用價值 蝶豆花的可食部位是葉、花及嫩莢。較幼嫩的葉片及盛開的花朵,亦可拿來煮湯、油炸等。用嫩芽來炒肉絲或煮熟後食用,都十分可口。蝶豆花的葉及花的萃取液,可當作純天然的食品染料。

直達香草(herb4kitchen)
PS.營業用批量報價

錦鯉養殖基本知識

◎飼養與管理的重點 只要不是劇烈的變化,錦鯉很容易適應各水溫水質等環境的變化。並不是沒有大庭園就無法飼養,有人甚至在二樓陽台或頂樓陽台造水池飼養。然而我們是欣賞錦鯉雄壯豪邁之氣,因此水池盡量寬闊為宜,以水深1.2m以上為理想。魚池必須有底水排出,過濾循環等設備。用水不一定要取地下水,自來水也可以飼養。
<因為都市中有景觀安全的需求,及屋頂花園有荷重的需求,錦鯉池水深可以低到30cm左右。>
◎每天排水
A、糞或枯死的藻類全部送至過濾槽的話,耗氧量會增大,pH就下降,更會轉變為亞硝酸,增了過濾槽的負擔。為了盡量減輕過濾槽的負擔,每天至少把魚池的底水排水使固物排出去,把中間水送去沉澱槽及過濾槽。 
B、把固體廢物的魚糞集中排出,最好不要從池底打氣而是從排糞口的上方40~50公分打打氣。如此氣泡往上昇。池水產生對流。污物就集中於排糞口。
<可以設計水流把固體廢物盡量集中或排出到過濾系統中。>
◎過濾槽管理
A、細菌附著於濾材,分解固體廢物會消耗大量的氧。 
B、溶氧不足時,厭氧菌會把硝酸還原亞硝酸,或從碳酸氣發生沼氣,也會從硫酸分解產生硫化氫等有毒氣體。
<如果溶氧不足,可以優先把打氣設備放置到生化過濾槽中。>
◎溶氧要充份
A、水中溶氧不足的話,會影響錦鯉的生育,飼料的消化,,水質的維持等等。
B、硝酸,亞硝酸的濃度增高時,會影響溶氧量。所以優先去除硝酸及亞硝酸。
C、使用沸石可輕易去除硝酸,沸石量約等重於魚體總重量。
<沸石再生法,是將沸石浸泡25℃以上1:10食鹽水數小時,再以清水洗淨即可。>
◎水質的控制
水質硬度高的話,錦鯉肌膚經常會有少許充血的狀態。豔麗性也會慢慢消失,紅緋會上升。pH值低,肌膚變的很不好看,但是雖餵增色飼料,依然不見起色,徒增浪費。pH值7.1~7.5最適宜的。
◎鯉餌的重要性
良好的魚餌不會崩壞鯉的體型。餌的量也是在夏天水溫 高的時候,訂定停餌期間,才是整體來說使鯉變胖最重要的秘訣。如果還是想 要給很多餌的話,要增加循還量。錦鯉在水溫超過28度的時候,應給與相當於 鯉全體重量3%的餌。水溫25度時1.5%,水溫20度時0.3%,16度以下則要停止鯉餌,這就是鯉魚長得強壯的要訣。連續不斷地給鯉餌的話,引起內臟障礙, 而影響到鯉不會長壯,甚至導至體型的變歪。
◎魚病預防
水的管理與定期消毒都是很重要的步驟,…