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Toon (Toona sinensis) is a the of Meliaceae toon genus perennial deciduous tree. Also known as Toon of endemic species, the main varieties of the \high consumption and value of health care. From April 2, 2005 to 12 October 2005, the study tracking measured indicators of the eight teaching trials estate Huanong to different sources toon sample of eight nutrients: water content, crude fiber, tannins, amino acids, crude fat, protein, soluble sugar, vitamin C, 8 eight different Toona sinensis dynamic analysis, obtained the water content of the eight kinds of source toon from April 2 to October 12, dynamic curve of crude fiber, tannin, fat, protein, soluble sugar, vitamin C, and summarize its variation obtained: From April to October 8 Provenances water content showed a the preliminary rapid increase then after a slow decline in the trend of the water content of the leaves is higher than the old leaves; throughout the measurement period, the change of the crude fiber 8 Provenances radiate a steady increase in the trend. With the change of the growth cycle, crude fiber content of the old leaves than mature leaves, greater than the content of the leaves; eight kinds of Toona sinensis tannin content increased rapidly between April 2 to April 7, later as growing season changes slowly decline steadily, little change in the overall content; graph from eight kinds of sources toon amino acid changes can be seen throughout the measurement period, the same variation of the amino acid content of different Toona sinensis, were tested and then decreased trends first experienced a transient decreased and then increased, and content of the entire growth period maximum reached around June 24, and then with the growth, slow decline, and a slight rise and then fall again around August 12; eight different Toona sinensis crude fat content trend is consistent throughout the measurement period, different Toona sinensis crude fat content showed a slow steady rising trend in the rapid increase in the initial stage of growth; 8 different Provenances the in protein the content consistent trend, showed the lowest content in the initial stage of growth, as toon foliage growth, protein content slowly rising and reached a maximum value throughout the growing period of slow decline trend around August 12; eight kinds of sources the toon of soluble sugar content variation, different Provenances soluble sugar content trend is basically the same, showing a steady increase in the initial stage of growth, in the July 24 to reach the maximum content of the entire growth period, after slow decline as the growing season presented the trend; eight kinds of sources of the vitamin C content of the toon variation, the trend of its vitamin C content is basically the same, showing the \Rapid increase in the initial stage of growth to reach the maximum content of the entire growth period May 24, and later as the growing season changes, different Provenances in vitamin C content decreased. By more than a summary of the law, combined with biological traits analysis explore toon nutritional variation of reason, compared Toon and several other differences in the nutritional content of the vegetables commonly compared differences in nutrient content of different provenances Toon determine Toon picking period, toon buds, mature leaves and old leaves comprehensive development and utilization of intensive production and of vegetable the toon varieties chosen to provide a reference.
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