| Vegetable is necessary for people because of its supplementary nutrition. With the development of agriculture and industry and the increasing appearance of environmental issue, more heavily pollution has threatened to vegetable base in our country. And this has done harm to quality and has reduced the yield of vegetable. Evenly, more and more contaminates have challenged people's health. For this, more attentions have been paid to vegetable pollution for its negative effect and production of contaminated-free vegetable was attained importance to.Three-gorges area, located in poor and dense-population region of China, has tender-balance environment. For this, ecological-economy is the only way to development for the area. As one of particular varieties of vegetable in Three-gorges area, studies on contaminated-free Tumorous stem mustard are necessary to economy and health.In the past, there were few studies on Tumorous stem mustard except for some in the yield and nutrition content. Further, much few attentions had been paid to comprehensive quality and health, and the few and far between in it aimed at the effects from the fertilization and environment to Three-gorges area. Consequently, a comprehensive study is indispensable to Tumorous stem mustard.In this paper, based on all-round investigation on the irrigated water, soil and Tumorous stem mustard in Nantuo in Fuling city, a representative Tumorous stem mustard base, we comprehensively and systematically compared the effects on vegetable by environment. Also, with the filed experimentation, we further studied the laws and affecting from the fertilization, explored the effects from the organic-inorganic specialty fertilizer I and inorganic specialty fertilizer II to different treatments in the growing, yield, quality of nutrition and health, which include of the combination of carbamide, monoammonium phosphate (MAP), single superphosphate (SSP), fused calcium magnesium phosphate (FCMP), sulfate of potash (SOP) and muriate of potash (MOP) in the same nutrition content of total N, P and K.By the average-pollution-index less than 0.5 wholly, results on investigation showed that the water was on cleanly and better cleanly level in Nantuo wholly. Furthermore, some conclusion on soil was drawn from research synthetically. With abundant microelement nutrient in soil, it also showed that poon supplement in nutrient substance of Ca, Mg and S, especially, the 2/3 lack of Mg and the 70 percent lack of S. Another, the results showed that low content of Hg and Cr in soil and the soil was in good condition wholly, while high content of Cd (0.531mg.kg-1). In the soil, there were no distinct relations between basic nutrient substance, microelement and content of heavymetals in the area.With the basic quality's indexes of the nutrition content of water, Vc, soluble sugar, amino acid, whole protein, total phosphorus, total kalium and the indexes of microelement nutrient substance of Fe, Mn, Cu, Zn, Ca, Mg and S, comprehensively comparisons with the generic Tumorous stem mustard, Chinese cabbage and stem of luttuce was did in this paper. It showed that the quality of stem was better than the average quality of it in Chongqing. And, by the indexes of nutrient substance, it was also showed that it was better than luttuce and Chinese cabbage in P and K. The content of Mn, Fe and Mg in stem was abundant, while the content of Ca, Cu and Zn was lower. The content of nitrate was wholly lower in stem, which 73.3 percent belonged to good level and 26.7 percent to common. The content of heavy metals was wholly lower such as Hg, As, Cd and Pb, while the average content of Cr was in more dangerous level (0.39 mg.kg-1). The investigation also showed that different capability of heavy metals accumulation was in stem. The distinction was Cd>Hg>Cr>Pb>As.Respectively, the different qualities on stem were showed with the diverse ways of using soil in this study. There had no distinct effects on stem from the qualities of environment wholly. Nevertheless, the content of organ... |
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