Effects Of Ce And Y Rare Earth Elements On Yield And Quality Index Of Chinese Cabbage

Lots of research have indicated REE have function of plant growth’regulation. Therefore, this research under the conditions of pot experiment, through sprayed different groups, concentrations of rare earth elements Ce, Y solution of these two rare earth elements to cabbage, study of these two rare earth elements on cabbage biological traits, physiological indicators, quality indicators of the impact of differences and cabbage on the accumulation of rare earth elements for the test characteristics, in ord to different groups of rare earth elements in leafy crops to control the amount of rare earth elements and rare earth elements used to improve the effectiveness of the quality and safety of pesticide residues to provide a theoretical guarantee. The results showed that:(1) Cabbage different groups of rare earth elements from the various studies on the effect of index terms, the light is better than the group reorganization of Ce rare earth Y;(2) Cabbage handle different elements from various studies on the effect of index terms, the effect of decreasing order:light rare earth group Ce> Rare Earth Ce, Y hybrid processing> Recombinant rare earth Y;(3) Solutions of different concentrations of rare earth from various studies on the cabbage indicator effect, low concentration and high concentration of rare earth elements Ce, Y treatment can significantly promote the various studies cabbage indicators improved, and high concentrations of rare earth elements Ce, Y processing inhibited the above indicators of improvement; which, in addition to the optimum height of an indicator concentration of150mg·kg-1, the fresh and dry weight, chlorophyll, VC, POD and CAT optimal concentration was300mg·kg-1;(4) Concentrations of rare earth elements from different groups and the accumulation in vivo characteristics of view cabbage, Chinese cabbage plants in the light of the cumulative amount of Ce group was significantly greater than the cumulative amount of restructuring of Rare Earth Y, and its accumulation presented with spraying liquid concentration increased gradually increasing regularity;(5) Safety of agricultural products from the plant in terms of plant foods REE national standard GB13107-91, the required content of rare earth elements in plant food≤0.7mg·kg-1,the experimental conditions, a single spraying different concentrations of rare earth Ce solution, cabbage body content of Ce150mg·kg-1concentrations above these national standards; spraying different concentrations of rare earth Y alone solution, cabbage Y REEs content600mg kg-1concentrations exceeded the national standard; spraying different concentrations of rare earth elements Ce, Y mixed solution, cabbage REEs Ce, Y total quantity of300mg·kg-1concentrations exceeded the national standard.