Citrus Low-yielding Garden Type And Premature Aging, Low-yielding Reconstruction Technique

Citrus is the main fruit tree in the south of China. Its high-production, long-life-span, abundanty nutrition, easy-make and good-quality fruit, and so on, are popular to the customers. With the open policy and the development of our country, the adjustment of the struture of agriculture and forest, Citrus, the main economic forestry, developes quickly and shows the importance to the friut grower's income. However, as to HuNan province, even to the whole country, because of the bad cultivate management, the new Citrus grows slowly, the fruit's quality and production is low. the income is so little that the positivity(enthusiasm) of the fruit grower begin to fall and some people even cut the Citrus tree. In order to find out the cause of low-quality and Low-profit from the theory and from practice, to properly classify the type of the Citrus with Low production and profit, to bring forth the key technique, to clear the trouble of the planter and make the citrus industry fit for the international standard, we begin to investigate in the country of ShuangPai and Zixing where is the main Citrus-out place. The investigation include species, mangement measures, state of the trees, production per year, friuts of the quality, profit, the physical character of soil, etc. We also estimate the fruit from shape, size, index of the fruit's shape and heavy, the pericarp's color , core per fruit, solvable solid, fructose and fruit sugar, VC and acid, and divide the Citrus orchard into five types: Slow-development and Slow-production, decline before the old, excess coverage, Less tree and less coverage, low quality species, We discuss their own making cause systematically.It expressed that the reform of the Citrus has big potential and good profit, from the implementing experimentation in the horticulture reform toward the Citrus, which can realize the progress that this year is better than last year.. After reformation of the Citrus, the trees have flourish in branch and leaves, shape of the fruit tree is standard and beautiful, uniform appearance, perennial green,This result can be largely popularized in Citrus planting area.