Effects of increased phosphorus fertilizer on C, N, and P stoichiometry in different organs of bluegrass (Poa L.) at different growth stages

Introduction The application of phosphorus (P) fertilizer can promote photosynthesis in forage grasses and accelerate their establishment. Methods To improve the utilization efficiency P for bluegrass (Poa L.) alpine regions, effects on growth, carbon (C), nitrogen (N) distribution different organs them are tested at six fertilization levels (3, 6, 9, 12, 15, 18 g·m −2 ). Results (1) nutrient content each organ varies during growth stages, with lowest occurring wilt stage. (2) response ratio to varies. When rate was 15 , contents N roots were highest, C/N C/P ratios lowest. 12 stems 9 leaves 6 panicle Discussion These results provide a better understanding effect partitioning pattern perennial plant regions. information from this study support more reasonable establishment early grassland. For example, artificial grassland, low-concentration (6~9 ) spikes grass; ecological management, high-concentration (15 enhance benefits