Comparison of Chinese and Japanese closed LED plants

The closed plant factory is basically in the artificial environment and the external environment in the isolated high yield, high quality, high efficiency and sustainable plant production system, is based on the artificial light as the main feature of the plant factory.

The necessity of developing a closed plant factory

In recent years, due to the relatively low income of farmers, agricultural labor aging phenomenon, excessive use of fertilizers and pesticides has become the main measures of agricultural production and farmers' income, resulting in most of the land in China pH average value dropped to about 5.44, the acidification phenomenon is extremely serious, soil mineralization, farming continued ability is declining. Zhao Qiguo, academician of the Chinese Academy of Sciences, research shows that the vast majority of China's land containing organic matter has dropped to 1% or less, far below the minimum level of international standards of more than 2.4%.

In addition, in recent years, China vigorously promote the use of plastic film technology, resulting in large plastic film 20 years of difficult decomposition of residues in the soil each year, and is now 500 thousand per year t growth rate continues to increase the white pollution of agriculture. At the same time, all kinds of mineral resources (including all kinds of metallic mineral) by a large number of disorderly exploitation, more and more kinds of pesticide and herbicide toxicity have been developed using natural disasters, expanding the scope of haze, leading to food safety incidents have occurred; the large-scale city construction and real estate industry disorderly development, economy enter normalization, cause the basement and a large number of factories, housing vacancy, in this context, reduce waste, and make an inventory of fixed assets, improve the utilization rate of resources to the closed plant factory came into being.

Development status of closed plant factory

The construction of closed plant factory can use idle box facilities, houses, factories, basements and other places mainly by artificial light closed production, no occupation of farmland; can reduce the impact of climate change on plant growth; can effectively prevent pests; can reduce the land, water and environmental pollution.

1, the current situation of the development of closed plants in Japan

1995 years ago, Japan has built a family of 6 light plant plant closed, accounting for 38% of the total number of plant plants in japan. The actual planting area in 2007 2868 M2 post Kyoto rabbit artificial light closed plant factory for 2520 m2, to achieve annual sales of 700 million yen; 2008 Fukui Mihama (the actual use of idle plant 2870 M2 by 700 m2) the construction of artificial light closed plant factory, annual cropping index 20 times, sales revenue reached 300 million Japanese yen; MITSUBISHI Group owned Mitsubishi Chemical Holdings Corp began selling 40 feet in January 2010 (12.2 m long, 2.4 m wide and 2.9 m high) modified container plant factory facilities, first units for the Qatar order, the price of 50 million yen / Taiwan, the current annual sales of about 10 units, the daily facilities can be harvested 50 lettuce and Komatsu dishes other leaf vegetables.

At present, there are more than 100 factories in japan. In recent years, the Japanese market appeared to sell household refrigerator type artificial light closed plant factory, small household refrigerator volume general house garden, 1 490mm wide and 650 mm long, 1470 mm, has been ordered using the number of catering enterprises. Not only that, Japan's closed LED plant plant has been inserted into Singapore, Russia, China, etc..

2, China's closed plant development

China's first sets of artificial light closed plant factory exhibition in 2009 Changchun Agricultural Expo, the Shanghai World Expo and exhibition of second sets; 2010 ieda has launched a home version of artificial light closed plant factory, marking China's artificial light closed plant factory has been supporting mature technology.

3, the application scope is more and more broad

With the technology of plant factory constantly improved and various environment of miniaturization, mini plant factory has been applied to people's lives, such as restaurants, cafes, light fairy Hotel plant factory, office, bedroom, kitchen plant factory plant factory, the vegetables from production to the tip of the zero distance, micro plant factory has been everywhere.

Problems and solutions of closed plant factory

The closed plant factory with natural light, natural light and artificial light and type, open type plant factory, has certain advantages in idle facilities utilization, pest prevention, temperature control and regulation, the content of science and technology, construction cost, but there are obvious problems. That is, the cost of artificial light in the production and construction process is too high to reach about 30% of total expenditure.

In order to solve this problem, people have done a lot of useful exploration and has achieved many breakthroughs: on the one hand, the use of solar energy, wind energy, tidal energy, hydropower, bio energy streams and geothermal power generation technology to provide electrical power for cheap plant factory; on the other hand, using LED and OED energy-saving lights to reduce energy consumption and cost. With the emergence of new materials, new equipment, new technology, closed plant factory technology system will continue to improve, the problem of high cost of electricity will be resolved.

Prospects for external facilities and Cultivation Techniques of closed plant

As a non agricultural land, the economic development of the region activate a regional "primer", in twenty-first Century the world agricultural development direction of the intelligent agricultural technology of plant factory a closed plant factory, technology system will be more perfect, more advanced; the external closed plant factory facilities, will appear a variety of closed facilities at the same time simultaneously.

Especially with the development of material industry