The effects of four different fertilization patterns, no application of P, single application of chemical P fertilizer, cycling reuse of organic residues （rice straw, pig feces and green manure） and cycling reused of organic residues incorporated with chemical P, on Olsen-P in paddy soil, P content in grain and haulm of rice as well as the P uptake and accumulation at different growth durations of rice were studied using the samples taken from a long-term experiment field of the Taoyuan Station of Agro-ecosystem Observation, Chinese Academy o...
