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Soil is the base for the growth and development of the tea tree, water, fertilizer, gas, hot places. Tea plant nutrients and moisture from the soil, soil fertility, soil temperature, soil moisture, and soil pH Tea Root and shoot growth and development have an extremely important role. Tea plantations in southern Shaanxi, yellow cinnamon soil, yellow brown soil. Partial stick of cinnamon soil ground, neutral or acidic, the middle and lower classes have sticky disc, low content of organic matter, phosphorus deficiency less nitrogen, water retention and poor ventilation, a serious impediment to the growth of the roots of tea plants. In this study, the typical Northwest Agriculture and Forestry University of Science and Technology, tea technology demonstration bases cinnamon soil different improved handling, improved soil fertility changes, tea tree growth and the quality of the tea changes in order to explore the tea plantations yellow cinnamon soil improved good program, to lay the foundation for the development of the tea industry in southern Shaanxi and the improvement of the quality of the tea. The main results are as follows: soil pH is an important factor affecting the growth of tea. Several processing application of organic fertilizer in the present study are to varying degrees to reduce the pH value of the soil, reached a pH level suitable for growing tea. Best manure processing, pH 5.65, 13.5% lower than the untreated soil pH. Second of humic and diesel quality treatment, pH 5.85 and 5.84, respectively, 10.4% lower than the untreated soil pH before. Application of organic manure (greaves, humus, manure) processing and straw very significantly improve the effect on soil fertility, the late four treatments of soil organic matter content, N content, K content, P content were significantly higher than other treatments; highest soil organic matter content of the manure is processed, reaching 2.21 g / kg, a 111.65% increase compared with the control, P content is the highest in all treatments, 26.76 mg / kg and 194.71% higher than in the control; application of diesel soil highest N content of 91.36 mg / kg, 48.31% higher than in the control; straw soil K content of the highest of 339.78 mg / kg, 78.20% higher than in the control; planting green manure the soil fertility has been improved, but there is no application of organic fertilizer effect. In addition to the doped sand treatment, other treatment are different degrees of improve tea containing two or more substances content, improve the quality of the tea. Which diesel processing significantly improves the tea polyphenols, amino acids, caffeine and water extract content were 19.54%, 2.34%, 2.96%, 43.90%, phenol ammonia ratio 8.369, significantly lower than the control, tea best quality; manure, humus, vetch, straw and sweet clover treatment significantly improve the Tea amino acids, caffeine, and the content of water extracts phenol ammonia ratio are very significantly lower than the control; tea doped the sand foreign soil treatment polyphenols, caffeine and water content increases, but the amino acid content of less phenol ammonia poor tea Xianshuang degrees. Consolidated the results of different treatments on Xixiang tea garden soil fertility and quality of tea, in southern Shaanxi tea plantations cinnamon soil, soil improvement recommendations to increase the amount of greaves, manure, humus, organic fertilizer, and combine straw.
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