关键词: 磷肥, 有机肥, 磷积累, 土壤磷库

Abstract: The yield response of Chinese cabbage to phosphate fertilizer and organic manure was studied in pot experiment for two years. The effect of phosphate fertilizer and organic manure on plant total P content and different soil phosphorus pool were also investigated. Results showed that application of phosphate fertilizer and organic manure significantly increased the yield of Chinese cabbage. Application of phosphate fertilizer at rates of 150-600 mg·kg-1 gave an yield increase of 14.9%-21.5% of Chinese cabbage; there was no significant difference at the rate of 150, 300, 600 mg·kg-1 phosphate fertilizer. Application of organic manure at rates of 33.3-133.2 g·ka-1 gave an yield increase of 18.2%-25.9% of Chinese cabbage; there was no significant yield response to phosphate fertilizer after applying organic manure. The plant total P content of Chinese cabbage was increased gradually with the increase of the rate of phosphate fertilizer and organic manure; Phosphorus was absorbed luxuriously with excessively applying phosphate fertilizer and organic manure. The content of Olsen-P, soil water-soluble P, biological available-P were increased with the increase of phosphate fertilizer and organic manure, Organic phosphorus was increased with the increase of organic manure. Soil Olsen-P was linearly correlated with water-soluble P and biological available-P, but there was no significant correlation between Olsen-P and Organic-P.

Key words: Phosphate fertilizer, Organic manure, Residual phosphorus, Phosphorus pool