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| Effect of Different Fertilization Modes on Soil Nitrogen and Phosphorus Content and Characterization of Nutrition Uptake in Crop |
| LI Shun-jiang1，SHAN Nan1，3，DU Lian-feng1，AN Zhi-zhuang1，ZHANG Lin-wu2，ZHAO Tong-ke1* |
| 1Institute of Plant Nutrition and Resource，Beijing Academy of Agriculture and Forest Science，Beijing 100097，China；2Miyun County Agriculture Service Center，Beijing 101500，China；3College of Resources and Environmental Sciences，Agricultural University of Hebei，Baoding 071000， Hebei， China |
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Abstract A field experiment was conducted to study the effects of different fertilization modes on soil nitrogen，phosphorus content and characteristic uptake of the Chinese cabbage〔Brassica campestris L. ssp. pekinensis（Lour）Olsson〕．The result indicate that long-term and excessive fertilization could result enriched of total nitrogen（TN）in top soil，and the TN content in top soil was higher than that in 3 years ago．These also can raise the risk of the nitrogen leaching to the deep soil．Even the excessive fertilization could not increase the nitrogen uptake of the Chinese cabbage effectively．The available phosphorus content in top soil would decrease with the increasing chemical fertilizer．In the organic fertilizer treatments，phosphorus uptake of Chinese cabbage was higher than that in other treatments．The yield of Chinese cabbage was the highest in the organic-chemical fertilizer treatment，it even higher than that in excessive fertilizer treatment．So reduced nitrogen input，controlled the phosphorus input， and reasonable supplement apply by organic-chemical fertilizer would be one of the effective way for improving the fertilizer utilization ratio and the yield and quality of the crop.
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Received: 18 July 2013
Published: 13 September 2013
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