Related to ecological agriculture especially organic agriculture, people most concern is: its production can meet the needs of humans for food. Many people consider from the Angle of sustainable development of society and environment, is in favor of ecological agriculture, but worry about ecological agriculture and organic agriculture production is too low, can't feed the world.
Organic farming hot around the world, global organic agriculture development promotion, more developed countries has reached a fairly mature stage, in recent years, Lin Li Ching and other developed countries and developing countries around the world in the 293 district were investigated, estimated in different parts of the crops are inorganic agriculture and organic agriculture production, the average rate of production, it is found that for most of the crops, organic agriculture in developed countries and inorganic slightly less than 1, the average ratio of agricultural production output in developing countries, the value is greater than 1. On average, the output of organic agriculture in developed countries can achieve 92% of the traditional agriculture. In developing countries, the production of organic agriculture to 80% higher than the traditional inorganic agriculture. According to the ratio of the average output, calculates the researchers on global food production mode: on the basis of existing land, in the case of don't have to bring more land, we can greatly increase the production rate, organic agriculture in order to improve the existing population of organic food supply per capita.
In a recent study, scientists dismissed the long-standing a hypothesis: organic farming can't produce enough food for people around the world. Researchers say, and traditional agricultural cultivation, on the same land organic food production can reach the former three times. For most of the food category, research in the developed world "organic, inorganic" average output slightly < 1.0, in developing countries, however, the research of "organic, inorganic" average output > 1.0, namely organic average yields an average yield is higher than non-organic crops.
Researchers at the university of Michigan found that in the developed countries, the output of organic agriculture and traditional agriculture is almost equal. In developing countries, with the method of the organic agriculture planting, food production is two to three times that of the traditional method. The university of Michigan school of natural resources and environment of Ivette Perfecto is the research, led by professor he put forward this idea. Perfecto said that organic agriculture smaller to the harm of the environment, and is likely to produce enough food. Especially for developing countries, heze is a good news. In these countries, sometimes can't get food from the outside world, so the farmers needed their reserves. Perfecto thinks, once the switch to the organic agricultural production, food production in developing countries will be obviously improved.
In the comparison of the traditional agriculture and organic agriculture production, the researchers began to think of nitrogen fertilizer. They use the current farmland area multiplied by the unit area of the crops can produce nitrogen - if planted "green manure in intermittent period. They found that the intermittent period of planting green manure crops, can provide sufficient nitrogen for organic agricultural production, and no longer need synthetic fertilizers. Perfecto said that organic farming is important, because the traditional agriculture - including high yield plant, mechanized farming, synthetic fertilizer and biological pesticides, damage to the environment is very big. Loss in the traditional agricultural fertilizer, for example, is "dead zones" (oxygen content is extremely low, waters of sea creatures can't survive) in the first place. Promote organic agriculture scientists stressed that traditional agriculture will cause soil erosion, greenhouse gas emissions, enhance harmful substances resistant, resistant and serious damage to the biological diversity.
The researchers for their term "organic" is defined as: a policy of known as sustainable or ecology. That is to say, the use of the synthetic process of nutrient cycling, refused to use synthetic pesticides, maintain or update the soil quality. Perfecto said, after the idea that organic agriculture, the idea of people on earth would starve, it is very ridiculous.
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