Research On Analysis Of Heavy Metal Elements Contents And Green Fruit Produce In Ai-wan Pomelo

'Ai-wan pomelo ' trees were taken as the materials in this test. The items including tree characteristic branches and leaves growth and development characters, blossom and fructify characters were studied in this experiment. Based on the mastery of the foundation of its biological and agricultural characteristics, the heavy metals elements in the orchard soil, irrigation water and maturity fruit were carried out measurement analysis. And the measurement results and the related standard value of the People's Republic of China agriculture profession standard《Green food—Technical conditions for environmental of area》and《Green food—Citrus》were carried on more analytical, and according to the green food environment quality evaluate techniques standard, a quality evaluation were carried on. This paper also discussed the relevance among various heavy metals element contents in the orchard soil and between the soil's and fruit's contents. Primary judgments revealed that the contents of ' Ai-wan pomelo ' at Suining city measure up the level A green food production. The results provided a theories basis for established the produce technique regulations. The results showed that:1. Under the common cultivate and management conditions, the 'Ai-wan pomelo' could grow strong, fruit-bearing early, and plentiful produce steady produced. The branches with a length less than 10 cm were the most common for fruit-bearing. However, those of longer than 15 cm could be fruit-bearing only occasionally. These branches with leafs and blossoms were the most common for fruit-bearing and those just with blossoms take the second place.2. Every single pollution index of heavy metal of the sample orchard soil was lower than 1.0, and the synthesis pollution index also lower than 0.7. The result showed that the quality of the orchard soil attained one class. Every testing value of heavy metal of orchard soil matched the standards request of Green food-technical condition of environment.3. The each heavy metal content of orchard irrigation water were not been checked, each heavy metals single pollution index was smaller than 1, and the result showed that the quality of irrigation water was measure up the standards of Green food-technical condition of environment.4. The heavy metal content of Hg,Cd,Pb,As in fruit of sample orchard was lower than the standards of Green food-Citrus and National standard of health food.5. The relevant analysis showed that there existed certain relevance among the heavy metal elements content of sample orchard soil. But the relevance between the soil's and fruit's heavy metal elements content were not so obvious.Based on the above-mentioned improved critical production techniques, the corporation standards for production of "Ai-wan pomelo' were compiled. The standards were comprised of four parts, i.e., environment request, cultivation techniques, Disease and pest control, and fruit harvest and storage.