Multivariate Analysis of Nutritional Components of Phyllostachys bissetii Shoots and Soil Nutrientsients

To explore the effects of soil nutrients in purple soil and yellow soil on the yield and quality of bamboo shoots, and the soil nutrient conditions for cultivating high-quality white bamboo shoots were obtained, which provide theoretical support for soil management of white bamboo shoots forests in two regions. One artificially managed bamboo forest was selected respectively in Ya'an purple soil region and Dujiangyan yellow soil region, and each bamboo forest was set with 10m × 10m experiment plot, which was repeated for eight times. In May 2017, the soil and bamboo shoots samples collected in each experiment plot were detected and analyzed. The multiple regression method was used to screen the soil nutrient factors affecting the quality of bamboo shoots in different producing regions, and the regression equation between bamboo shoots nutrients and soil nutrient content was fitted. Finally, the relationship between nutrient components of bamboo shoots and soil nutrients was obtained. The results showed that the contents of total nitrogen and alkali hydrolyzable nitrogen in soil of two producing areas were high, but the contents of organic matter, total phosphorus and available phosphorus were low, and the contents of total potassium and available potassium were at normal level. The quality of bamboo shoots in yellow soil producing area is better than that of purple soil region, and there was a significant correlation between the nutrition of bamboo shoots and soil nutrients (P < 0.05). The main soil factors affecting the quality of bamboo shoots in purple soil area were soil pH, organic matter and available phosphorus. The soil factors affecting the quality of bamboo shoots in yellow soil area were mainly organic matter, available phosphorus and available potassium. Both of the two regions were lack of organic fertilizer and phosphate fertilizer, and the nitrogen fertilizer application was on the high side. The management was to increase the application of organic fertilizer and balance the application of nitrogen, phosphorus and potassium fertilizer. There was a significant correlation between soil nutrients and nutrient content of bamboo shoots, and the purpose of high quality and high yield of bamboo shoots could be achieved by adjusting soil physical and chemical properties and nutrient content.ing soil physical and chemical properties and nutrient content.