Research On The Influence Of Pollution-Free Vegetables Production Key Factor

Pollution-free vegetables, namely agricultural product of condition of producing area, producing process and product quality can meet the relevant national standards and requirements of the specifications via the qualified and allow the use of agricultural products marks of pollution-free. Pollution-free vegetable is a kind of pollution-free agricultural products, and its concept can also use the expression way for:agricultural product of condition of producing area, producing process and product quality can meet the relevant national standards and requirements of the specifications via the qualified and allow the use of agricultural products marks of pollution-free."Relevant state standards and specifications" means issued by the state environmental standard of non-pollution vegetables, pollution-free vegetable producing technical specifications and pollution-free vegetables quality standards. To meet this requirement, fine varieties of vegetables should be chosen to suit for local planting conditions including soil, water, atmosphere and ecological environment without pollution and full implementation of production, transportation, processing and storage organic standard operation as a quaternary to make and guarantee its terminal products with good quality nutrition, health, safety and conforming to the standard after inspection.From the worldwide, there are many similar ideas on the basic concept of non-pollution vegetables, such as clean vegetables, health vegetables, no pesticide pollution vegetables, natural food and so on and it hasn’t formed its united concept so far. Some scholars in China think that vegetable products which the residues of toxic substance of pesticide, heavy metal, nitrate, harmful organisms (including harmful organisms, parasitic ovum, etc.) and so on are in a limited amount of scope in accordance to the measure issued by the state can be referred to as pollution-free vegetables.In the early1920s, in other parts of the world have already started to develop pollution-free vegetables and soilless culture is the main mode of production. According to incomplete statistics, the world use nutrient solution membrane method (NFT) cultivation pollution-free vegetables country has reached76. For example, over half of the tomatoes, cucumbers and fruit vegetable in New Zealand are of soilless culture. Some developed countries such as Japan, the Netherlands, the United States is to use modern hydroponic greenhouse, can be perennial production of pollution-free vegetables. In highly industrialized Japan, many suburban land was polluted by industrial waste gas, waste water and waste residue and cadmium, copper and heavy metals in soils are gathered in a large number, thus causing the Japanese government attach great importance and wide attention of all social sectors. The government has to a large number of special funds, mobilize the masses of scientific and technical workers to "heavy metal pollution" problems in research. Through years of efforts, explore soil dressing change layer. underground dark irrigation, fertilizer, biological fixed comprehensive agronomic measures. Our country pollution-free vegetable research and production began in1982. The23initial cities are involved in the research, demonstration and promotion work of the pollution-free vegetable. After a few years of practicing research, a set of comprehensive prevention and control plant diseases and insect pests and how to reduce pesticide pollution of pollution-free vegetables production technology are gradually established. In1985, the national pollution-free vegetable production covers an area of600000mu.It is in this premise condition, people have realized clearly:the research of the key factor of non-pollution vegetable production has been very important. The key factors recognized by scientists as follows:the first is the pesticide pollution; The second is growing environment pollution; Moreover is producing fertilizer pollution. This paper is based on the three aspects, and in the light of "pesticide pollution to our country the influence of non-pollution vegetable production" the main problem and expansion related survey and research.