Japanese solar double-season cultivation for efficient use of expensive land

2013/10/12 14:08:00 China News Network Font Size: small  medium  big

content Summary in Japan, agricultural land is very expensive. But the use of solar energy for double-season cultivation, there are countless ways to do a multi-use. However, the use of the premise is not to use permanent concrete piles as a support, and does not affect agricultural operations and grain production.

Solar energy is good, but how much land do we need to use solar energy on a large scale? And how can we balance energy needs with other important needs, such as food?

In Japan, agricultural land is very expensive. Currently, a group of farmers is pushing a similar goal: to develop what they call "solar sharing". Renewable Energy World JunkoMovellan wrote an interesting report about solar Energy the exploration of the sharing phenomenon explains that until recently the government allowed the construction of solar power plants on farmland that is being cultivated.

In April 2013, Japan's Ministry of Agriculture, Forestry and Fisheries approved the installation of photovoltaic systems in existing grain farmland, provided that permanent concrete piles cannot be used as support and will not affect agricultural operations and grain production. Movellan explained that this gave Japanese farmers the opportunity to promote the concept of solar double-season cultivation on a large scale.

The concept was first proposed in 2004 by AkiraNagashima, a retired agricultural mechanical engineer who later studied biology and studied the "light saturation point". As the irradiance level increases, the rate of photosynthesis also increases; however, after reaching a certain point, no matter how much the amount of light shines on the plant increases, the rate of photosynthesis does not change. Knowing that too much sunlight does not help plants grow more vigorously, Nagashima came up with the idea of combining photovoltaic systems with farming. He designed and invented a special structure, which is very similar to the pergola in the garden.

From double-season cultivation in solar power plants to self-generating greenhouses, we see countless ways to do multiple uses in one place. Japanese farmers seem to be making it through their own efforts.

Citation from Science and Technology World Network http://www.twwtn.com/Agriculture/53_205040.html

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