Proceed from the relation of insect and its host of parasitic plant, the influence of pest-insect on the production of organic food vegetables was analyzed, and the tactics preventing the pest-insect from harming the vegetables during the production of organic food vegetables was put forward in this paper.

Basing upon the environment standards for pollution-free vegetable producing areas and the environment standards for green vegetable producing areas,this paper studies the soil environment quality of the 14 important vegetable producing bases in the city of Qinhuangdao,following the single-index and multiindex models.

The sense quality of green vegetable are likely to be effected by the green color,but the green is easy reduced during processing.

Decolor mechanism and color\|fixation methods of green vegetables;

Determination of the nutrion components and pesticide residues of green vegetables North Mountainous region in Jinhua City;

Because of pollution of the vegetables issues,the technical measures of control pollution of the vegetables to produce green vegetables are comprehensively studied.