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Chinese Journal of Applied Ecology ›› 2003, Vol. ›› Issue (12): 2205-2207.

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Long-term trial on fertilization and on use of recycled nutrients in farming systems Ⅴ. Response of crop yields to fertilization in different precipitation years and estimates of water and nutrient interaction

ZHANG Lu, SHEN Shanmin, YU Wantai, LIAN Hongzhi   

  1. Institute of Applied Ecology, Chinses Academy of Sciences, Shenyang 110016, China
  • Received:2002-12-27 Revised:2003-06-02 Online:2003-12-15

Abstract: According to the responses of crop yields under fertilizations in1996 with normal precipitation (456 mm in crop growth season) and in1998 with higher precipitation (598 mm in growth season),the effect of water and nutrient interaction on crop yields in semihumid semiarid region of west Liaoning Province were estimated. Under Napplication and sufficient water supply (more rainfall),the increase of crop yields was 3056 kg穐m-2 ,of which,1996 kg穐m-2 was estimated from water nutrient interaction,while in NPand compost treatment with sufficient water supply,the yield increase was 4703 kg穐m-2 ,of which,1554 kg穐m-2 was estimated from water nutrient interaction.

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