| With the rapid development of scale livestock and poultry industry, large amounts of manure is generated, which has become a main surface source pollutant of the countryside in China. It is an important method for governing the livestock and poultry excrement pollution, and enhancing the soil fertility by producing and applying the organic fertilizer treated with biological fermentation in the farmland. However, the widely use of the feed additive which includes the high-copper,high-zinc,high-arsenic in poultry cultivation ,as well as the low use factor of livestock and poultry, causes the heavy metal pollution in the livestock and poultry excrement. After analyzing the basic character and the heavy metal content of the 4 kinds of main livestock and poultry excrement (pig, cattle, chicken and duck dung) in Fujian Province, this article has further studied the move and concentrate of copper, zinc, arsenic in the pig excrement in the soil-vegetables system. The Main result as follows:(1) The livestock and poultry excrement were rich in organic materials and the nutritive elements, the content of organic materials, nitrogen, phosphorus, potassium, calcium, magnesium, iron, manganese ,boron was in range of 340．81～751．25g·kg, 6．97～48．02g·kg, 8．82～89．81g·kg,3．84～16．45g·kg,3．12～37．67g·kg,4．12～18．21g·kg,1281．71～6999．55mg·k g,105．15～676．09mg·kg,3．52～53．38mg·kg respectively in four kinds of livestock and poultry excrement. According to the average content, the content of nutrient in the pig and chicken manure were higher than that in the others.(2) There was one or more kinds of heavy metal (copper, zinc, arsenic, cadmium, chromium and lead) exceeded heavy metals limitation in the four kinds of livestock and poultry excrement, and the exceed heavy metals limitation standard of copper, zinc, arsenic in the pig excrement were the most serious. In reference to GB4284-84 for the control agriculture pollutant standard in China and the heavy metals limitations standard of mature compost in Germany, about 93．56%～98．39% and 91．94%～95．16% of copper and zinc in the pig excrement exceeded the heavy metals limitation standard respectively. According to NY525-2002 of organic fertilizer industry standard in China, the exceeded percentage of arsenic was 38．71%in pig excrement.(3) The content of total and extractable copper in soil and copper content in Brassica campestris increased with the by the application quantity of pig dung increased. Applicationof pig dung significantly declined the content of residual fraction of copper in soil, whileenhanced the content of exchangeable, organically complex, organically bound, solidparticulate, and the exchangeable, organically complex copper were especially significantlyincreased. Stepwise regression analysis between copper content in Brassica campestris andvarious fraction of copper in soil showed that copper in Brassica campestris mostly camefrom the exchangeable and organically complex.(4) Concentration of total zinc, extractable zinc in soil and content of zinc in Brassicacampestris were increased by application of pig dung. When the application quantity of pigdung is 40g·kg or above, both the soil and Brassica campestris would be polluted by zinc.The content of organically complex zinc, organically bound zinc, solid particulate increasedby application of pig dung, when the content of residual fraction and exchangeable zincdecreased with the quantity of application pig dung increased. Stepwise regression analysisbetween zinc content in Brassica campestris and various fraction of zinc in soil showed thatexchangeable and organically complex zinc were the main source of zinc in Brassicacampestris. The content and partition ratio of organically complex zinc in the soil applied pigdung were higher than that of exchangeable zinc, the discrepancy was especially obvious inthe treatments which were applied large quantity of pig dung. Therefore, it could beconcluded that organically complex zinc contributed more for the zinc content of Brassicacampestris than that of exchangeable zinc.(5) The content of total and extractable arsenic in soil as well as the content of arsenic inBrassica campestris increased by application of pig dung. Correlation analysis showed thatthe arsenic content in Brassica campestris had positively significant positive correlation withthe content of extractable arsenic in soil, which indicated that the increasing of the content ofextractable arsenic in soil coursed by application of pig dung made the increasing of thearsenic content in Brassica campestris.
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