Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (3): 146-150.doi: 10.11924/j.issn.1000-6850.casb15080033

Special Issue: 水稻 园艺

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Effect of Different Fertilization Patterns on Crop Yield and The Budget of Nitrogen and Phosphorus in Vegetable-Paddy Rice Rotation System

  

  • Received:2015-08-05 Revised:2015-09-21 Accepted:2015-09-24 Online:2016-01-29 Published:2016-01-29

Abstract: A 2-year stationary field experiment of potato-green soy bean-late rice rotation was carried out to study the effect of different fertilization patterns on the yield of vegetable- rice rotation and nitrogen and phosphorus concentration in vegetable field. The results showed that economic fertilization increased the yields of three crops significantly, the net profit of one rotation cycle increased by 23.7% and 10.5% respectively compared with that of CK treatment and farmer fertilization. The apparent use efficiency of nitrogen and phosphorus was 60.5% and 16.0% respectively, which increased by 15.6 percentage points and 7.3 percentage points respectively compared with that of farmer fertilization under one rotation system. Soil NO3-- N concentration and total P concentration in percolating water of soil-pillar increased by 63.3% and 30.6% respectively compared with that of basal soil in the potato-green soy bean continuous cropping under the mode of economic fertilization. However, soil NO3--N concentration and total P concentration remained stable under the potato-green soy bean-late rice rotation. Therefore, it could be concluded that the modes of the vegetablevegetable-paddy rice rotation with economic fertilization was an effective technical mode for nutrient management in vegetable field.