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Acta Agron Sin ›› 1993, Vol. 19 ›› Issue (05): 402-411.

• ORIGINAL PAPERS • Previous Articles     Next Articles

Ecological Evaluation of Rice-Based Cropping Systems in the Philippines

Zhao Qiang-ji;D.P.Garrity;Wang Zeng-yuan   

  1. Jiangsu Academy of Agricultural Sciences,Nanjing,210014
  • Received:1991-11-02 Revised:1992-05-08 Online:1993-09-12 Published:1993-09-12

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Abstract: This paper makes an agro-ecological evaluation of the perspective of nutrient balance of the rice-based cropping patterns of the farmer's field and experimented field in the rainfed upland,rainfed lowland and irrigated paddy sites in the Philippines. In order to study the balance, the biomass a

Key words: The Philippines, Cropping patterns, Balance of nutrient and soil organic matter

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