香港新浪網 MySinaBlog
« 上一篇 | 下一篇 »
本地菜會 | 29/06/18 | 一般 | (74 Reads)
Cantonese: 學者=hok-ze(scholar) 二園=ji-jyun(Farm II)

18 學者@二園 Scholars@Farm
  五月十六 天晴  26-34℃ 濕度77% 審核編碼: 18F9 02

audit trail: 18F9 00, 29/06/18, fine, 26-34℃ RH77%
My dear friend Professor Cheryl Swift from the United States brought her research team from Whittier College to Hong Kong to visit our farm. 
Here are her views and comments on the study.
18 學者@二園 Scholars@Farm
  We had the good fortune to visit Local Produce, the organic farm my
  good friend Amy Cheung has been a part of for more than a decade.
  This was a real treat for me, and for my students, Bry, Alya, and
  Robert, all of whom are Environmental Science majors at Whittier College. 
It was a great opportunity to compare management ideas since Whitter College has a working garden that functions somewhat like a micro-farm that Bry, Robert and Ayla have worked on for the past few years, and to see soil improvement strategies first hand.

18 學者@二園 Scholars@Farm 18 學者@二園 Scholars@Farm 18 學者@二園 Scholars@Farm 18 學者@二園 Scholars@Farm
What we found in Hong Kong was a well-organized, extremely productive plot that made use of the best ideas in polyculture including intercropping with nitrogen-fixing peanuts to restore soil fertility, mixing up crops in a mosaic to reduce pest damage, and improving soil fertility through the use of organic soil amendments. 
In many ways, the farm is a textbook example of sustainable agriculture and an alternative to agribusiness as usual.

18 學者@二園 Scholars@Farm
  Farming in Hong Kong presents a set of challenges that we don't
  have in Southern California.
  The main problem with farming in Southern California is lack of
  water, and one problem in Hong Kong is too much water during the rainy season. 
In Southern California, smart farmers make sure to add lots of organic material to improve soil water retention and reduce water demand. 
We noted that the farm in Hong Kong needs to do the same thing to ensure replacement of organic material washed away by heavy rains
Increasing the organic content of the soil on the farm will not only increase soil fertility, it will also increase water availability to roots since soils that are largely clay do not release water readily to the root zone.

Increasing the organic content of the soil on the farm is going to take some thoughtful re-organization.  
We noticed that the organic material that was purchased is very coarse and is mostly wood and fiber. 
This material has a very high carbon to nitrogen ratio, which means that any nitrogen, the limiting nutrient for plant growth, will not be released to the soil for plants to use.
We suggest composting the organic amendment before use which will decrease the carbon to nitrogen ratio, and result in more nitrogen release to the soil.

Many farms have a series of compost piles beginning with relatively coarse material to which is added green waste from the farm.
That pile should be kept moist, turned and covered to increase the temperature which will speed composting to create an organic feast for the crops on the farm. 
A final pile would be ready to use compost. 
As more green material is made available, the middle compost piles will grow and add to the final pile. 
To speed the process, the coarse pile could also be kept moist and covered in an attempt to speed decomposition.

Having said that, the farm seems to be chugging along pretty well on its own. 
It has an impressive variety of crops, from burdock to taro, and bok choy to watermelon.
The farm is a great demonstration of what can be done in a small space to grow local, organic, sustainable food. 
It is a model for urban and rural farming.