关键词: 浙江, 浙江, 杨梅, 重金属, 污染指数, 质量安全

Abstract:

Researched the Se non-rich soils of high-quality rice producing area of Jiangmen by pot experiment. Increase soil available Selenium in Se non-enrich soil to the level of available Se content of Se-rich soil. Experiments showed that the artificially imposed Se fertilizers can improve Se content of rice quickly; making it close to or above Se content of rice that grown in the natural Se-rich soil area. Artificial fertilization not only can improve Se content of rice, but also can increase the absorption capacity of nutrients and the antagonistic capacity of harmful elements. But made the maturity of rice advance and thus affect the normal physiology of rice, to some extent affecting the rice of physical and chemical composition and synthesis of nutrients. Such as reducing the unpolished rice yield of paddy and head rice rate, increased the chalky rice rate, having some impact on eating quality points and gel consistency. Artificial Se fertilizer was also affect soil pH value, soil redox conditions, adsorption capacity of organic matter, thus affecting the chemical equilibrium between the soil nutrient elements and toxic elements.